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Chemical Structure| 68947-43-3 Chemical Structure| 68947-43-3

Structure of 68947-43-3

Chemical Structure| 68947-43-3

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Product Details of [ 68947-43-3 ]

CAS No. :68947-43-3
Formula : C7H13NO2
M.W : 143.18
SMILES Code : O=C(C1CCN(C)CC1)O
MDL No. :MFCD06659473
InChI Key :HCKNAJXCHMACDN-UHFFFAOYSA-N
Pubchem ID :2736939

Safety of [ 68947-43-3 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319-H332-H335
Precautionary Statements:P261-P280-P305+P351+P338

Computational Chemistry of [ 68947-43-3 ] Show Less

Physicochemical Properties

Num. heavy atoms 10
Num. arom. heavy atoms 0
Fraction Csp3 0.86
Num. rotatable bonds 1
Num. H-bond acceptors 3.0
Num. H-bond donors 1.0
Molar Refractivity 42.23
TPSA ?

Topological Polar Surface Area: Calculated from
Ertl P. et al. 2000 J. Med. Chem.

40.54 Ų

Lipophilicity

Log Po/w (iLOGP)?

iLOGP: in-house physics-based method implemented from
Daina A et al. 2014 J. Chem. Inf. Model.

1.42
Log Po/w (XLOGP3)?

XLOGP3: Atomistic and knowledge-based method calculated by
XLOGP program, version 3.2.2, courtesy of CCBG, Shanghai Institute of Organic Chemistry

-2.0
Log Po/w (WLOGP)?

WLOGP: Atomistic method implemented from
Wildman SA and Crippen GM. 1999 J. Chem. Inf. Model.

0.03
Log Po/w (MLOGP)?

MLOGP: Topological method implemented from
Moriguchi I. et al. 1992 Chem. Pharm. Bull.
Moriguchi I. et al. 1994 Chem. Pharm. Bull.
Lipinski PA. et al. 2001 Adv. Drug. Deliv. Rev.

0.35
Log Po/w (SILICOS-IT)?

SILICOS-IT: Hybrid fragmental/topological method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

0.31
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

0.02

Water Solubility

Log S (ESOL):?

ESOL: Topological method implemented from
Delaney JS. 2004 J. Chem. Inf. Model.

0.6
Solubility 568.0 mg/ml ; 3.97 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Highly soluble
Log S (Ali)?

Ali: Topological method implemented from
Ali J. et al. 2012 J. Chem. Inf. Model.

1.67
Solubility 6740.0 mg/ml ; 47.1 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Highly soluble
Log S (SILICOS-IT)?

SILICOS-IT: Fragmental method calculated by
FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com

-0.11
Solubility 111.0 mg/ml ; 0.776 mol/l
Class?

Solubility class: Log S scale
Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly

Soluble

Pharmacokinetics

GI absorption?

Gatrointestinal absorption: according to the white of the BOILED-Egg

High
BBB permeant?

BBB permeation: according to the yolk of the BOILED-Egg

No
P-gp substrate?

P-glycoprotein substrate: SVM model built on 1033 molecules (training set)
and tested on 415 molecules (test set)
10-fold CV: ACC=0.72 / AUC=0.77
External: ACC=0.88 / AUC=0.94

No
CYP1A2 inhibitor?

Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.83 / AUC=0.90
External: ACC=0.84 / AUC=0.91

No
CYP2C19 inhibitor?

Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set)
and tested on 3000 molecules (test set)
10-fold CV: ACC=0.80 / AUC=0.86
External: ACC=0.80 / AUC=0.87

No
CYP2C9 inhibitor?

Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set)
and tested on 2075 molecules (test set)
10-fold CV: ACC=0.78 / AUC=0.85
External: ACC=0.71 / AUC=0.81

No
CYP2D6 inhibitor?

Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set)
and tested on 1068 molecules (test set)
10-fold CV: ACC=0.79 / AUC=0.85
External: ACC=0.81 / AUC=0.87

No
CYP3A4 inhibitor?

Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set)
and tested on 2579 molecules (test set)
10-fold CV: ACC=0.77 / AUC=0.85
External: ACC=0.78 / AUC=0.86

No
Log Kp (skin permeation)?

Skin permeation: QSPR model implemented from
Potts RO and Guy RH. 1992 Pharm. Res.

-8.59 cm/s

Druglikeness

Lipinski?

Lipinski (Pfizer) filter: implemented from
Lipinski CA. et al. 2001 Adv. Drug Deliv. Rev.
MW ≤ 500
MLOGP ≤ 4.15
N or O ≤ 10
NH or OH ≤ 5

0.0
Ghose?

Ghose filter: implemented from
Ghose AK. et al. 1999 J. Comb. Chem.
160 ≤ MW ≤ 480
-0.4 ≤ WLOGP ≤ 5.6
40 ≤ MR ≤ 130
20 ≤ atoms ≤ 70

None
Veber?

Veber (GSK) filter: implemented from
Veber DF. et al. 2002 J. Med. Chem.
Rotatable bonds ≤ 10
TPSA ≤ 140

0.0
Egan?

Egan (Pharmacia) filter: implemented from
Egan WJ. et al. 2000 J. Med. Chem.
WLOGP ≤ 5.88
TPSA ≤ 131.6

0.0
Muegge?

Muegge (Bayer) filter: implemented from
Muegge I. et al. 2001 J. Med. Chem.
200 ≤ MW ≤ 600
-2 ≤ XLOGP ≤ 5
TPSA ≤ 150
Num. rings ≤ 7
Num. carbon > 4
Num. heteroatoms > 1
Num. rotatable bonds ≤ 15
H-bond acc. ≤ 10
H-bond don. ≤ 5

1.0
Bioavailability Score?

Abbott Bioavailability Score: Probability of F > 10% in rat
implemented from
Martin YC. 2005 J. Med. Chem.

0.55

Medicinal Chemistry

PAINS?

Pan Assay Interference Structures: implemented from
Baell JB. & Holloway GA. 2010 J. Med. Chem.

0.0 alert
Brenk?

Structural Alert: implemented from
Brenk R. et al. 2008 ChemMedChem

0.0 alert: heavy_metal
Leadlikeness?

Leadlikeness: implemented from
Teague SJ. 1999 Angew. Chem. Int. Ed.
250 ≤ MW ≤ 350
XLOGP ≤ 3.5
Num. rotatable bonds ≤ 7

No; 1 violation:MW<1.0
Synthetic accessibility?

Synthetic accessibility score: from 1 (very easy) to 10 (very difficult)
based on 1024 fragmental contributions (FP2) modulated by size and complexity penaties,
trained on 12'782'590 molecules and tested on 40 external molecules (r2 = 0.94)

1.1

Application In Synthesis of [ 68947-43-3 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 68947-43-3 ]

[ 68947-43-3 ] Synthesis Path-Downstream   1~55

  • 1
  • [ 64-18-6 ]
  • [ 590-29-4 ]
  • [ 824-77-1 ]
  • [ 68947-43-3 ]
  • 2
  • [ 68947-43-3 ]
  • [ 52177-40-9 ]
  • [ 122225-86-9 ]
  • 3
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid [2-(1,2,3,4-tetrahydro-isoquinolin-1-yl)-ethyl]-amide [ No CAS ]
  • 4
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid [2-(2-phenylmethanesulfonyl-1,2,3,4-tetrahydro-isoquinolin-1-yl)-ethyl]-amide [ No CAS ]
  • 5
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(toluene-4-sulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 6
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(4-ethyl-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 7
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(4-bromo-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 8
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(4-isopropyl-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 9
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(4-chloro-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 10
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(4-methoxy-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 11
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(4-vinyl-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 12
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(4-cyano-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 13
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(4-nitro-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 14
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(4-<i>tert</i>-butyl-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 15
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(3-chloro-4-methyl-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 16
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(4-propyl-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 17
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(3,4-dichloro-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 18
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(4-butyl-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 19
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(2,4,6-trimethyl-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 20
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid (2-{2-[4-(1,1-dimethyl-propyl)-benzenesulfonyl]-1,2,3,4-tetrahydro-isoquinolin-1-yl}-ethyl)-amide [ No CAS ]
  • 21
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(4-trifluoromethyl-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 22
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(4-acetylamino-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 23
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(biphenyl-4-sulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 24
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(4-methyl-3-nitro-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 25
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(2,4,6-trichloro-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 26
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(4-trifluoromethoxy-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 27
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid {2-[2-(4-diethylaminomethyl-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinolin-1-yl]-ethyl}-amide [ No CAS ]
  • 28
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid [2-(2-pentamethylbenzenesulfonyl-1,2,3,4-tetrahydro-isoquinolin-1-yl)-ethyl]-amide [ No CAS ]
  • 29
  • [ 68947-43-3 ]
  • 1-methyl-piperidine-4-carboxylic acid [2-(2-pentafluorobenzenesulfonyl-1,2,3,4-tetrahydro-isoquinolin-1-yl)-ethyl]-amide [ No CAS ]
  • 30
  • [ 68947-43-3 ]
  • [ 122224-96-8 ]
  • 31
  • [ 68947-43-3 ]
  • 1-Methyl-piperidine-4-carboxylic acid [(S)-1-[(S)-1-((1S,2R,3S)-1-cyclohexylmethyl-2,3-dihydroxy-5-methyl-hexylcarbamoyl)-2-thiazol-4-yl-ethylcarbamoyl]-2-(4-methoxy-phenyl)-ethyl]-amide [ No CAS ]
  • 32
  • [ 55-22-1 ]
  • [ 68947-43-3 ]
  • 33
  • [ 2459-09-8 ]
  • [ 68947-43-3 ]
  • 34
  • [ 7630-02-6 ]
  • [ 68947-43-3 ]
  • 35
  • [ 68947-43-3 ]
  • 1-methyl-4-(1-phenyl-1-propionyloxy-ethyl)-piperidine [ No CAS ]
  • 36
  • [ 68947-43-3 ]
  • [ 6071-92-7 ]
  • 37
  • [ 68947-43-3 ]
  • 1-methyl-4-(α-propionyloxy-benzhydryl)-piperidine [ No CAS ]
  • 38
  • [ 1126-09-6 ]
  • [ 74-88-4 ]
  • [ 68947-43-3 ]
YieldReaction ConditionsOperation in experiment
A mixture of ethyl piperidine-4-carboxylate (4.72 g), methyl iodide (2.24 mL), potassium carbonate (8.29 g) and acetonitrile (50 mL) was stirred at room temperature for 2 hrs. The reaction mixture was concentrated under reduced pressure and water (150 mL) was added. The mixture was extracted with ethyl acetate (150 mL). The ethyl acetate layer was washed with saturated brine (100 mL), dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. A 1N aqueous sodium hydroxide solution (20 mL) was added to the residue (2.64 g), and the mixture was stirred overnight at room temperature. The reaction mixture was neutralized by adding 1N hydrochloric acid (20 mL) and the mixture was concentrated under reduced pressure. Ethanol was added to the residue, and the precipitate was filtered off. The filtrate was concentrated under reduced pressure. This step was repeated and ethanol and ethyl acetate were added to the residue for crystallization to give 1-methylpiperidine-4- carboxylic acid (1.79 g) as a colorless solid. H-NMR (CD30D) : 1.80-1. 98 (2H, m), 2.00-2. 14 (2H, m), 2.28- 2.42 (lH, m), 2.78 (3H, s), 2.88-3. 04 (2H. m), 3.32-3. 44 (2H. m). A mixture of 1-methylpiperidine-4-carboxylic acid (1.72 g) obtained above, tert-butyl 2-hydroxyethyl (methyl) carbamate (1.75 g) obtained in Reference Example 1, [1-ETHYL-3- [3-] (dimethylamino) propyl] carbodiimide hydrochloride (2.30 g), 4- dimethylaminopyridine (0.24 g) and acetonitrile (50 mL) was stirred at room temperature for 16 hrs. The reaction mixture was concentrated under reduced pressure and a saturated aqueous sodium hydrogen carbonate solution (50 mL) was added to the residue. The mixture was extracted with ethyl acetate (100 [ML).] The ethyl acetate layer was washed with saturated brine (50 [ML),] dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was purified by basic silica gel column chromatography (eluted with ethyl acetate: [HEXANE=50] : 50, then 80: 20). IN Hydrochloric acid (25 mL) was added to the purified product (2.73 g), and the mixture was stirred overnight at room temperature. The reaction mixture was concentrated under reduced pressure and isopropanol was added. The mixture was again concentrated under reduced pressure and the precipitated solid was collected by filtration to give the title compound (1.72 g) as a colorless solid. [H-NMR] [(DMSO-D6)] : 1.70-2. 20 (4H, m), 2.40-3. 50 [(13H,] m), 4. 31 (2H, m), 9.25 (2H, br), 10.77 (lH, br).
  • 39
  • [ 68947-43-3 ]
  • [ 57561-39-4 ]
  • C15H28N2O4 [ No CAS ]
YieldReaction ConditionsOperation in experiment
With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride;dmap; In acetonitrile; at 20℃; for 16h; A mixture of ethyl piperidine-4-carboxylate (4.72 g), methyl iodide (2.24 mL), potassium carbonate (8.29 g) and acetonitrile (50 mL) was stirred at room temperature for 2 hrs. The reaction mixture was concentrated under reduced pressure and water (150 mL) was added. The mixture was extracted with ethyl acetate (150 mL). The ethyl acetate layer was washed with saturated brine (100 mL), dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. A 1N aqueous sodium hydroxide solution (20 mL) was added to the residue (2.64 g), and the mixture was stirred overnight at room temperature. The reaction mixture was neutralized by adding 1N hydrochloric acid (20 mL) and the mixture was concentrated under reduced pressure. Ethanol was added to the residue, and the precipitate was filtered off. The filtrate was concentrated under reduced pressure. This step was repeated and ethanol and ethyl acetate were added to the residue for crystallization to give 1-methylpiperidine-4- carboxylic acid (1.79 g) as a colorless solid. H-NMR (CD30D) : 1.80-1. 98 (2H, m), 2.00-2. 14 (2H, m), 2.28- 2.42 (lH, m), 2.78 (3H, s), 2.88-3. 04 (2H. m), 3.32-3. 44 (2H. m). A mixture of <strong>[68947-43-3]1-methylpiperidine-4-carboxylic acid</strong> (1.72 g) obtained above, tert-butyl 2-hydroxyethyl (methyl) carbamate (1.75 g) obtained in Reference Example 1, [1-ETHYL-3- [3-] (dimethylamino) propyl] carbodiimide hydrochloride (2.30 g), 4- dimethylaminopyridine (0.24 g) and acetonitrile (50 mL) was stirred at room temperature for 16 hrs. The reaction mixture was concentrated under reduced pressure and a saturated aqueous sodium hydrogen carbonate solution (50 mL) was added to the residue. The mixture was extracted with ethyl acetate (100 [ML).] The ethyl acetate layer was washed with saturated brine (50 [ML),] dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was purified by basic silica gel column chromatography (eluted with ethyl acetate: [HEXANE=50] : 50, then 80: 20). IN Hydrochloric acid (25 mL) was added to the purified product (2.73 g), and the mixture was stirred overnight at room temperature. The reaction mixture was concentrated under reduced pressure and isopropanol was added. The mixture was again concentrated under reduced pressure and the precipitated solid was collected by filtration to give the title compound (1.72 g) as a colorless solid. [H-NMR] [(DMSO-D6)] : 1.70-2. 20 (4H, m), 2.40-3. 50 [(13H,] m), 4. 31 (2H, m), 9.25 (2H, br), 10.77 (lH, br).
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In acetonitrile; at 15 - 30℃; for 16h; A mixture of <strong>[68947-43-3]1-methylpiperidine-4-carboxylic acid</strong> (1.72 g) obtained above, tert-butyl 2-hydroxyethyl(methyl)carbamate (1.75 g) obtained in Reference Synthetic Example 1, 1-ethyl-3-[3-(dimethylamino)propyl]carbodiimide (2.30 g), 4-dimethylaminopyridine (0.24 g) and acetonitrile (50 mL) was stirred at room temperature for 16 hrs. The reaction solution was concentrated under reduced pressure, and to the residue was added saturated aqueous solution of sodium bicarbonate (50 mL), and extracted with ethyl acetate (100 mL). The ethyl acetate layeer was washed with saturated brine (50 mL), and dried over anhydrous magnesium sulfate, followed by concentrating under reduced pressure. The residue was purified with basic silica gel column chromatography (eluted with methanol : ethyl acetate = 50 : 50, then 80 : 20). To the purified material (2.73 g) was added 1 N hydrochloric acid (25 mL), and stirred at room temperature overnight. The reaction solution was concentrated under reduced pressure, and isopropanol was added, then, concentrated again under reduced pressure. The precipitated crystals were collected by filtration to give title compound as colorless solid (1.72 g).1H-NMR (DMSO-d6) : 1.70-2.20(4H,m), 2.40-3.50 (13H,m), 4.31(2H,m), 9.25(2H,br), 10.77 (1H,br).
With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride;dmap; In acetonitrile; at 20℃; for 16h; A mixture of <strong>[68947-43-3]1-methylpiperidine-4-carboxylic acid</strong> (1.72 g) obtained above, tert-butyl 2-hydroxyethyl(methyl)carbamate (1.75 g) obtained in Reference Example 1, 1-ethyl-3-[3-(dimethylamino)propyl]carbodiimide hydrochloride (2.30 g), 4-dimethylaminopyridine (0.24 g) and acetonitrile (50 mL) was stirred at room temperature for 16 hrs. The reaction mixture was concentrated under reduced pressure and a saturated aqueous sodium hydrogen carbonate solution (50 mL) was added to the residue. The mixture was extracted with ethyl acetate (100 mL). The ethyl acetate layer was washed with saturated brine (50 mL), dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was purified by basic silica gel column chromatography (eluted with ethyl acetate:hexane=50:50, then 80:20). 1N Hydrochloric acid (25 mL) was added to the purified product (2.73 g), and the mixture was stirred overnight at room temperature. The reaction mixture was concentrated under reduced pressure and isopropanol was added. The mixture was again concentrated under reduced pressure and the precipitated solid was collected by filtration to give the title compound (1.72 g) as a colorless solid.1H-NMR(DMSO-d6) : 1.70-2.20 (4H,m), 2.40-3.50 (13H,m), 4.31 (2H,m), 9.25 (2H,br), 10.77 (1H,br).
  • 40
  • [ 68947-43-3 ]
  • [ 57260-71-6 ]
  • 1-methyl-4-[[4-(1,1-dimethylethoxycarbonyl)-1-piperazinyl]carbonyl]-piperidine [ No CAS ]
YieldReaction ConditionsOperation in experiment
Preparation of 3:0.1 mol of I was stirred with 0.11 mol of CDI in 200 ml of chloroform at room temperature for 2 hours. Then 2 (0.1 mol) was added and reaction mixture was stirred at room temperature overnight. 200 ml of water were added, after that organic layer was separated and solvent removed under reduced pressure.
  • 41
  • [ 68947-43-3 ]
  • [ 6638-79-5 ]
  • [ 215950-19-9 ]
YieldReaction ConditionsOperation in experiment
80% 1-Methylisonipecotic acid (5.5 g, 38.4 mmol) was dissolved in dimethylformamide (100 ml) with heating. Diisopropylethylamine (8.0 ml, 46.1 mmol), 1-hydroxybenzotriazole (5.2 g, 38.4 mmol), and N,O-dimethylhydroxylamine hydrochloride (4.1 g, 42.2 mmol) were added and the reaction mixture was stirred 5 min. 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (7.4 g, 38.4 mmol) was added and the resulting homogeneous solution was stirred for 63 hours at ambient temperature. The solvent was removed under reduced pressure. The residue was dissolved in water and the solution was basified to pH 9 with 5N sodium hydroxide solution. This aqueous solution was extracted with methylene chloride then saturated with sodium chloride and extracted with chloroform/isopropanol (3/1). The combined organic extracts were dried over sodium sulfate and the solvent was removed under reduced pressure to give 9.5 g of a yellow liquid. Purification by flash chromatography (silica gel, methylene chloride:methanol:ammonium hydroxide, 100:10:1) gave 5.7 g (80percent) of product as a light yellow liquid. [00381] MS (m/e): 186(M+). [00382] Analysis for C9H18N2O2:
  • 42
  • [ 68947-43-3 ]
  • [ 750573-79-6 ]
  • 1-(4-amino-2-{1-[1-(1-methyl-piperidin-4-yl)-methanoyl]-piperidin-4-ylamino}-thiazol-5-yl)-(2,6-difluoro-phenyl)-methanone [ No CAS ]
YieldReaction ConditionsOperation in experiment
65% With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; triethylamine; In DMF (N,N-dimethyl-formamide); at 20℃; for 1h; A solution of [4-AMINO-2-(PIPERIDIN-4-YLAMINO)-THIAZOL-5-YL]-(2, 6-DIFLUORO-PHENYL)- methanone (Example A6 ; 300 mg, 1. 0 MMOL), 1-methyl-piperidine-4-carboxylic acid (230mg, 1. 25 MMOL), benzotriazol-1-yl-oxy-tris-pyrrolidino-phosphonium hexafluorophosphate (PyBop ; 572mg, 1. 1 MMOL), and triethylamine (604 mg, 6. 0 MMOL) in DMF (10 ml) stirred at room temperature for 60 minutes. The solvent was removed under reduced pressure. A solution of the resultant residue in ethyl acetate was washed with sat. NAHC03, dried over MGS04, filtered, and concentrated. Purification via reversed phase preparative HPLC provided yellow solid in 65percent yield. H NMR (DMSO-d6) : 8 8. 81 (br, 1H), 8. 08 (s, 2H), 7. 61-7. 42 (m, 1H), 7. 27-7. 08 (m, 2H), 4. 31- 4. 13 (m, 2H), 3. 98-3. 79 (m, 3H), 3. 39-3. 11 (m, 3H), 2. 92-2. 64 (m, 4H), 2. 28 (s, 3H), 2. 12-1. 77 (m, 4H), 1. 41-1. 14 (m, 2H). HRMALDIMS. Calcd for C22H27F2N502SNA (M+Na+) : 486. 1751. Found : 486. 1757
  • 43
  • [ 24252-37-7 ]
  • [ 68947-43-3 ]
YieldReaction ConditionsOperation in experiment
With hydrogenchloride; sodium hydroxide; In ethanol; 1-Methyl-4-piperidinecarboxylic acid may be prepared in the following manner: 12.5 cm3 of a 4 N aqueous sodium hydroxide solution are added, at 20° C., to 7.60 g of ethyl 1-methyl-4-piperidinecarboxylate in solution in 35 cm3 of ethanol. After stirring for 20 hours, the reaction mixture is concentrated to a reduced volume and then neutralized with 12.5 cm3 of a 4 N aqueous hydrochloric acid solution and finally concentrated to dryness under reduced pressure (2.7 kPa). The residue is stirred in 60 cm3 of anhydrous ethanol, and then filtered. The filtrate is concentrated to dryness under reduced pressure (2.7 Kpa) at 20° C., to give 6.3 g of 1-methyl-4-piperidinecarboxylic acid in the form of a white solid. 1H NMR spectrum (300 MHz, (CD3)2SO d6, delta in ppm): 1.56 (mt: 2H); 1.78 (mt: 2H); 1.98 (dt, J=11.5 and 2.5 Hz: 2H); 2.13 (mt: 1H); 2.18 (s: 3H); 2.74 (broad d, J=11.5 Hz: 2H).
With sodium hydroxide; water; at 15 - 30℃; A mixture of ethyl piperidine-4-carboxylate (4.72 g), methyl iodide (2.24 mL), potassium carbonate (8.29 g) and acetonitrile (50 mL) was stirred at room temperature for 2 hrs. The reaction solution was concentrated under reduced pressure, and water (150 mL) was added thereto, followed by extracting with ethyl acetate (150 mL). The ethyl acetate layer was washed with saturated brine (100 mL), and dried over anhydrous magnesium sulfate, then concentrated under reduced pressure. To the residue (2.64 g) was added 1 N aqueous solution of sodium hydroxide (20 mL), and stirred at room temperature overnight. To the reaction solution was added 1 N hydrochloric acid (20 mL) to neutralize, and concentrated under reduced pressure. To the residue was added ethanol, and the precipitate was filtered off, and the filtrate was concentrated under reduced pressure. After repeating this operation again, to the residue were added ethanol and ethyl acetate to crystallize, which gave 1-methylpiperidine-4-carboxylic acid as colorless solid (1.79 g). 1H-NMR (CD3OD) : 1. 80-1.98 (2H,m), 2.00-2.14 (2H,m), 2.28-2.42 (1H,m), 2.78(3H,s), 2.88-3.04(2H.m), 3.32-3.44(2H.m).
A mixture of ethyl piperidine-4-carboxylate (4.72 g), methyl iodide (2.24 mL), potassium carbonate (8.29 g) and acetonitrile (50 mL) was stirred at room temperature for 2 hrs. The reaction mixture was concentrated under reduced pressure and water (150 mL) was added. The mixture was extracted with ethyl acetate (150 mL). The ethyl acetate layer was washed with saturated brine (100 mL), dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. A 1N aqueous sodium hydroxide solution (20 mL) was added to the residue (2.64 g), and the mixture was stirred overnight at room temperature. The reaction mixture was neutralized by adding 1N hydrochloric acid (20 mL) and the mixture was concentrated under reduced pressure. Ethanol was added to the residue, and the precipitate was filtered off. The filtrate was concentrated under reduced pressure. This step was repeated and ethanol and ethyl acetate were added to the residue for crystallization to give 1-methylpiperidine-4-carboxylic acid (1.79 g) as a colorless solid.1H-NMR (CD3OD) : 1.80-1.98 (2H,m), 2.00-2.14 (2H,m), 2.28-2.42 (1H,m), 2.78(3H,s), 2.88-3.04(2H.m), 3.32-3.44(2H.m).
1.79 g With sodium hydroxide; In water; at 20℃; (0550) A mixture of ethyl piperidine-4-carboxylate (4.72 g), methyl iodide (2.24 mL), potassium carbonate (8.29 g) and acetonitrile (50 mL) was stirred at room temperature for 2 hrs. The reaction mixture was concentrated under reduced pressure and water (150 mL) was added. The mixture was extracted with ethyl acetate (150 mL). The ethyl acetate layer was washed with saturated brine (100 mL), dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. A 1N aqueous sodium hydroxide solution (20 mL) was added to the residue (2.64 g), and the mixture was stirred overnight at room temperature. The reaction mixture was neutralized by adding 1N hydrochloric acid (20 mL) and the mixture was concentrated under reduced pressure. Ethanol was added to the residue, and the precipitate was filtered off. The filtrate was concentrated under reduced pressure. This step was repeated and ethanol and ethyl acetate were added to the residue for crystallization to give 1-methylpiperidine-4-carboxylic acid (1.79 g) as a colorless solid. (0551) 1H-NMR (CD3OD): 1.80-1.98 (2H, m), 2.00-2.14 (2H, m), 2.28-2.42 (1H, m), 2.78 (3H, s), 2.88-3.04 (2H, m), 3.32-3.44 (2H, m).

  • 44
  • [ 68947-43-3 ]
  • [ 7462-84-2 ]
YieldReaction ConditionsOperation in experiment
96% With oxalyl dichloride;N,N-dimethyl-formamide; In dichloromethane; at 20℃; for 2h;Heating / reflux; Suspend N-methylisonipicotic acid (365 g, 2.55 mol) in CH2CI2 (3500 ml) and add a catalytic quantity of DMF (2 ml). Add oxalyl chloride (435 g, 3.42 mol, 1.35 eq.) to the reaction mixture maintaining the temperature at 20°C. Heat the suspension under reflux for 2 hrs. Cool the reaction mixture and concentrate on a rotary evaporator. Resuspend the residue in toluene (1000 ml), evaporate and dry under vacuum to yield the title product (489 g, 96percent) as an off-white solid residue, which is used without further purification in the next reaction step.
With thionyl chloride; for 4h;Reflux; EXAMPLE 25: N-(6-chloropyrazine-2-yl)- 1 -methylpiperidine-4-carboxamide37A solution of l-methylpiperidine-4-carboxylic acid (500mg, 3.1mmol) in thionyl chloride (8ml) was refluxed for 4h. All volatiles are removed under nitrogen. To the crude acid chloride, pyridine (6ml) was added followed by 2,6-Dichloropyrazine and the mixture was heated at 100°C overnight. Reaction was completed as shown by TLC. Pyridine was removed under vacuum and the obtained crude product was purified by flash column over neutral alumina using 5percent methanol/DCM as eluent. Compound 37 was obtained as dark brown solid, 130mg (40percent) and confirmed by 1HNMR and LCMS. 1H NMR (400 MHz, CDC13) delta: 11.06 (s, 1H), 9.30 (s, 1H), 8.46 (s, 1H), 2.77 (d, 2H), 2.58 (d, 2H), 2.15 (s, 3H), 1.86 (m, 4H), 1.8-1.74 (m. 2H); MS- 254, (M+l), LCMS- 98percent.
  • 45
  • [ 68947-43-3 ]
  • N-hydroxybenzoetriazole [ No CAS ]
  • [ 548768-18-9 ]
  • [ 99764-63-3 ]
  • [ 548770-31-6 ]
YieldReaction ConditionsOperation in experiment
5% With EDAC; triethylamine; In dichloromethane; Methyl-phenyl-carbamic Acid 4-{2-[(1-methyl-piperidine-4-carbonyl)-amino]-ethyl}-phenyl Ester A solution of <strong>[68947-43-3]1-methylpiperidine-4-carboxylic acid</strong> (0.3 mmol), EDAC (0.36 mmol) and triethylamine (1.0 mmol) in CH2Cl2 (10 mL) was added N-hydroxybenzoetriazole and N-methyl-N-phenyl-carbamic acid 4-(2-amino-ethyl)phenyl ester as its TFA salt (0.3 mmol). The mixture was stirred 16 h at rt and purified by preparative HPLC (Gilson) to give the title compound in 5percent yield as an oil. HPLC-MS: m/z=396.4 (M+1); Rt=2.03 min.
  • 46
  • [ 68947-43-3 ]
  • [ 23602-98-4 ]
  • 1-N-(N-(N-methyl piperidine-4-carbonyl)-leucinyl)-amino-3-N-(2-dibenzofuran-sulfonyl)-amino-propan-2-one [ No CAS ]
YieldReaction ConditionsOperation in experiment
EXAMPLE 256 Preparation of 1-N-(N-(N-methyl piperidine-4-carbonyl)-leucinyl)-amino-3-N-(2-dibenzofuran-sulfonyl)-amino-propan-2-one Following the procedure of Example 250(a)-(c), except substituting "N-methyl-piperidine-4-carboxylic acid" for "4-pyridyl acetic acid" and "2-dibenzofuran sulfonyl chloride" for "2-benzyloxy phenyl sulphonyl chloride" the title compound was prepared: MS(ES) M+H+ =557.
  • 47
  • [ 59311-67-0 ]
  • [ 68947-43-3 ]
  • [ 260545-80-0 ]
  • [ 260545-12-8 ]
YieldReaction ConditionsOperation in experiment
With EDAC; benzotriazol-1-ol; In N,N-dimethyl-formamide; Example 5 [7-(1-Methylpiperidin-4-yl)-4,5,6,7-tetrahydrothieno[2,3-c]pyridin-6-yl]-(4-methoxyphenyl)-methanone STR18 2-(3-Thienyl)ethanamine (3 g) was treated with <strong>[68947-43-3]1-methylpiperidine-4-carboxylic acid</strong> (4.24 g), HOBT (3.18 g), and EDAC (6.78 g) in DMF (180 ml). Procedure exactly as described in example 4. Yield 1.22 g crystals of <strong>[68947-43-3]1-methylpiperidine-4-carboxylic acid</strong> (2-thiophen-3-yl-ethyl)-amide, identified by NMR and MS: M+252.
  • 48
  • [ 68947-43-3 ]
  • [ 912275-39-9 ]
  • N-[3-(3,5-bis(trifluoromethyl)benzyloxy)-2-phenylpropyl]-1-methylpiperidine-4-carboxamide [ No CAS ]
  • 49
  • [ 68947-43-3 ]
  • [ 132953-16-3 ]
YieldReaction ConditionsOperation in experiment
With sodium hydroxide; EXAMPLE 1 3-(4-Fluorobenzyl)-2-(1-methylpiperidin-4-yl)-3H-imidazo[4,5-b] pyridine fumarate Grams 3.3 of 2,3-diaminopyridine and 5.4 g of N-methylisonipecotic acid hydrocloride are heated at 190° C. for 24 hours. The reaction mixture is cooled and diluted with a small amount of water then made alkaline to pH 10 by addition of NaOH then extracted several times with methylene chloride. The organic extracts are collected together and evaporated to dryness. The residue, crystallized from acetonitrile, gives 2 g (31percent of the theoretical value) 2-(1-methylpiperidin-4-yl)-3H-imidazo [4,5-b] pyridine melting at 224°-226° C.
With sodium hydroxide; Example 1 3-(4-Fluorobenzyl)-2-(1-methylpiperidin-4-yl)-3H-imidazo[4,5-b] pyridine fumarate. Grams 3.3 of 2,3-diaminopyridine and 5.4 g of N- methylisonipecotic acid hydrocloride are heated at 190°C for 24 hours. The reaction mixture is cooled and diluted with a small amount of water then made alkaline to pH 10 by addition of NaOH then extracted several times with methylene chloride. The organic extracts are collected together and evaporated to dryness. The residue, crystallized from acetonitrile, gives 2 g (31percent of the theoretical value) 2-(1-methylpiperidin-4-yl)-3H-imidazo [4,5-b] pyridine melting at 224-226°C.
  • 50
  • [ 68947-43-3 ]
  • [ 864172-81-6 ]
  • 1-methylpiperidine-4-carboxylic acid [4-(2,5,7-trimethyl-3H-imidazo[4,5-b]pyridin-3-ylmethyl)phenylamide] [ No CAS ]
YieldReaction ConditionsOperation in experiment
81% With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In tetrahydrofuran; N,N-dimethyl-formamide; at 20℃; for 12h; A solution of Compound P37 (0.50 g, 1.88 mmol) in THF-DMF (1:1)(6.0 mL) was added with EDC (0.468 g, 2.44 mmol), 1-hydroxybenzotriazole hydrate (0.305 g, 2.26 mmol), and <strong>[68947-43-3]1-methylpiperidine-4-carboxylic acid</strong> hydrate (0.406 g, 2.26 mmol) followed by stirring at room temperature for 12 hours. The reaction mixture was added with a 1 mol/L aqueous sodium hydroxide solution and extracted with chloroform three times. The organic layer was washed with a 1 mol/L aqueous sodium hydroxide solution, water, saturated brine, and dried over anhydrous magnesium sulfate, then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (chloroform : 2 mol/L ammonia-methanol solution=19 : 1) to obtain <strong>[68947-43-3]1-methylpiperidine-4-carboxylic acid</strong> [4-(2,5,7-trimethyl-3H-imidazo[4,5-b]pyridin-3-ylmethyl)phenylamide] (0.596 g, 1.52 mmol, 81percent). APCI-MS: m/z 392 [M + H]+ 1H NMR (CDCl3)delta(ppm): 1.86-2.01 (m, 2H), 2.15-2.21 (m, 1H), 2.27 (s, 3H), 2.46 (s, 3H), 2.59 (s, 3H), 2.61 (s, 3H), 2.89-2.94 (m, 2H), 5.39 (s, 2H), 6.89 (s, 1H), 7.09 (d, J = 8.59 Hz, 2H), 7.30 (s, 1H), 7.43 (d, J = 8.59 Hz, 2H).
  • 51
  • [ 68947-43-3 ]
  • [ 915710-96-2 ]
  • N-(4'-methyl-2-[5-(1-methylpiperidin-4-yl)-1,2,4-oxadiazol-3-yl]methyl}-4,5'-bi-1,3-thiazol-2'-yl)acetamide [ No CAS ]
YieldReaction ConditionsOperation in experiment
66% N-{2-[(2E)-2-amino-2-(hydroxyimino)ethyl]-4'-methyl-4,5'-bi-1,3-thiazol-2'yl}acetamide, obtained in step I as describe above (45 mg; 0.14 mmol; 1 eq.), is dissolved in DMF (3 ml) at RT. N-Methyl-4-piperidine carboxylic acid (102 mg; 0.72 mmol; 5 eq.), pre-activated with 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (138.5 mg; 0.72 mmol; 5 eq.) in DCM (3 ml), is added into the reaction mixture. It is stirred for 3 hours at RT. Upon completion of the reaction, water (1 ml) is added and solvents are concentrated to dryness. The residue is taken up in EtOAc and washed several times with water (3x5mL). The organic phases are dried over MgSO4, filtrated and evaporated. Residue is directly taken up in pyridine (3 mL) and heated up at 900C for 12 hours. Reaction mixture is cooled down and pyridine is evaporated to dryness. The crude material is purified by flash chromatography on silica gel (cyclohexane/ethylacetate, 10/90), affording Compound (83) as an oil (30 mg; 66percent).1H NMR (DMSO-d6, 300 MHz) delta 1.90 (m, 2H), 2.10 (s, 3H), 2.30 (m, 2H), 2.40 (s, 3H), 2.75 (s, 3H), 3.10 (m, 2H), 3.40 (m, 1H), 3.50 (m, 2H), 4.60 (s, 2H), 7.66 (s, 1H), 9.50 (m, 1H), 12.10 (m, 1H). M (ESI): 417.5; M+(ESI): 419.5. HPLC (method A), Rt: 1.96 min (purity: 86.9percent).
  • 52
  • [ 68947-43-3 ]
  • [ 18107-18-1 ]
  • [ 1029804-22-5 ]
YieldReaction ConditionsOperation in experiment
33% Reference Example 262: 2-Bromo-l-(l-methyI-piperidin-4-vI)-ethanone hydrobromide. A mixture of l-methyl-piperidine-4-carboxylic acid (0.40 g, 2.79 mmol) and thionyl chloride (0.32 mL, 4.44 mmol) in dichloromethane (10 mL) was heated to reflux for 6 h. The reaction mixture was distilled under reduced pressure and the residue dissolved in dry acetonitrile (4 mL). Trimethylsilyl diazomethane (4 mL, 8.08 mmol) was added and the mixture stirred for 2 h at ambient temperature. The reaction was cooled to 0 °C and 30percent HBr in acetic acid (2 mL) added dropwise. The reaction mixture was warmed to room temperature and stirred for 1 h. The precipitate was filtered and washed with ether to afford 2-bromo-l-(l-methyl-piperidin-4-yl)-ethanone hydrobromide (200 mg, 33 percent).
  • 53
  • [ 68947-43-3 ]
  • [ 891264-57-6 ]
  • [ 76-05-1 ]
  • 2-((1S)-1-[(1-methylpiperidinium-4-yl)carbonyl]amino}-7-oxononyl)-4-phenylpyridinium bis(trifluoroacetate) [ No CAS ]
YieldReaction ConditionsOperation in experiment
To a solution of the amine (O3) (1 eq.) and DIPEA (2.2 eq.) in DMF was added a solution of EDC.HCl (1.3 eq), HOBt (1.3 eq) and <strong>[68947-43-3]1-methylpiperidine-4-carboxylic acid</strong> (1.2 eq) in DMF. The mixture was stirred at RT for 3 h and the desired material was isolated by preparative RP-HPLC, using H2O (+0.1percent TFA) and MeCN (+0.1percent TFA) as eluents (C18 column). The desired fractions were lyophilized to afford the imidazole as a colourless oil.
  • 54
  • [ 68947-43-3 ]
  • [ 1089661-30-2 ]
  • [ 891260-56-3 ]
  • 55
  • [ 68947-43-3 ]
  • [ 1089661-33-5 ]
  • [ 891260-54-1 ]
 

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