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Chemical Structure| 203866-14-2 Chemical Structure| 203866-14-2

Structure of Boc-trans-4-F-Pro-OH
CAS No.: 203866-14-2

Chemical Structure| 203866-14-2

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Synonyms: N-Boc-trans-4-fluoro-L-proline

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Product Details of [ 203866-14-2 ]

CAS No. :203866-14-2
Formula : C10H16FNO4
M.W : 233.24
SMILES Code : O=C(N1[C@H](C(O)=O)C[C@@H](F)C1)OC(C)(C)C
Synonyms :
N-Boc-trans-4-fluoro-L-proline
MDL No. :MFCD06796085
InChI Key :YGWZXQOYEBWUTH-RQJHMYQMSA-N
Pubchem ID :12043048

Safety of [ 203866-14-2 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319
Precautionary Statements:P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313

Computational Chemistry of [ 203866-14-2 ] Show Less

Physicochemical Properties

Num. heavy atoms 16
Num. arom. heavy atoms 0
Fraction Csp3 0.8
Num. rotatable bonds 4
Num. H-bond acceptors 5.0
Num. H-bond donors 1.0
Molar Refractivity 58.42
TPSA ?

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

66.84 Ų

Lipophilicity

Log Po/w (iLOGP)?

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

1.8
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

1.28
Log Po/w (WLOGP)?

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

1.46
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.

0.89
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

0.26
Consensus Log Po/w?

Consensus Log Po/w: Average of all five predictions

1.14

Water Solubility

Log S (ESOL):?

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

-1.83
Solubility 3.46 mg/ml ; 0.0148 mol/l
Class?

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

Very soluble
Log S (Ali)?

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

-2.28
Solubility 1.22 mg/ml ; 0.00521 mol/l
Class?

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

-0.42
Solubility 87.7 mg/ml ; 0.376 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

Yes
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.

-6.81 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

0.0
Bioavailability Score?

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

0.56

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)

3.24

Application In Synthesis of [ 203866-14-2 ]

* 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 [ 203866-14-2 ]

[ 203866-14-2 ] Synthesis Path-Downstream   1~3

  • 1
  • [ 89466-16-0 ]
  • [ 203866-14-2 ]
  • tert-butyl (2S,4R)-2-((6-bromo-3-methylpyridin-2-yl)carbamoyl)-4-fluoropyrrolidine-1-carboxylate [ No CAS ]
YieldReaction ConditionsOperation in experiment
100% To a stirred solution of (2S,4R)-1-(tert-butoxycarbonyl)-4-fluoropyrrolidine-2-carboxylic acid (250 mg, 1.07 mmole) in 10 mL of CH2Cl2, was added 1-methyl imidazole (0.21 mL, 2.5 equiv.) at 0-50° C. under nitrogen atmosphere. The reaction mixture was stirred for 10 min at 0-50° C. and then added methane sulfonyl chloride (0.1 mL, 1.2 equiv) at the same temperature. It was stirred for 1 h at 0-5° C. Then <strong>[89466-16-0]6-bromo-3-methylpyridin-2-amine</strong> (200 mg, 1 equiv) was added, and stirred for 18h at room temperature. Water (10 mL) was added to the reaction mixture, layers were separated and aqueous layer was extracted with DCM (3×10 mL). The combined organic layer was washed with 1N HCl (10 mL), followed by Sat NaHCO3 (10 mL) and then with brine (10 mL). Combined organic layer was dried over Na2SO4, concentrated and 430 mg (quantitative yield) of titled compound was obtained.
Step 1: terf-Butyl (2S,4R)-2-((6-bromo-3-methylpyridin-2-yl)carbamoyI)-4- fluoropyrrolidine-l-carboxylate (209) [0696] To an ice cold solution of (2S,4R)-l -(feri-butoxycarbonyl)-4-fluoropyrrolidine-2- carbox lic acid (1 equiv) in DCM (10 vol) was added l-chloro-N,N,2-trimethyl-l-propenylamine ( 1 , 1 equiv) dropwise with stirring. Stirring was continued for 3 h at this temperature, and then 6- bromo-3-methylpyridin-2-amine (1.1 equiv) was added, followed by DIEA (3 equiv). The cooling bath was removed and the reaction mixture was stirred overnight at rt. The reaction mixture was then added to water and extracted with DCM. The organic layer was washed successively with an aqueous solution of NaHCCb, water and brine, then dried over Na2SO<i and concentrated under reduced pressure. The remaining residue was purified by column chromatography on silica gel (DCM EtOAc) to give compound 209.
  • 2
  • [ 1158786-59-4 ]
  • [ 203866-14-2 ]
  • tert-butyl (2S,4R)-2-((6-bromo-4-methoxypyridin-2-yl)carbamoyl)-4-fluoropyrrolidine-1-carboxylate [ No CAS ]
YieldReaction ConditionsOperation in experiment
97% To an ice cold solution of (2S,4R)- 1-(tert-butoxycarbonyl)-4-fluoropyrrolidine-2-carboxylic acid (250 mg, 1.1 mmole) in 6 mL of CH2Cl2, 1-chloro-N,N,2-trimethylprop-1-en-1-amine (0.15 mL, 1.1 equiv) was added drop-wise with stirring. The stirring was continued for 3 hours at the same temperature. Then <strong>[1158786-59-4]6-bromo-4-methoxypyridin-2-amine</strong> (239 mg, 1.0 equiv) was added, followed by 0.50 mL (3 equiv) Hunig's base. The cooling bath was removed and the reaction mixture was stirred at room temperature for overnight. The solvent was co-evaporated with 5 mL of MeOH, and the residue was purified by ISCO (eluted with ethyl acetate in hexane, gradient) to obtain 436 mg (97%) of tert-butyl-(2S,4R)-2-((6-bromo-4-methoxypyridine-2-yl)carbamoyl-4-fluoropyrrolidine-1-carboxylate as clear oil.
Step 1: ferf-Butyl (2S,4R)-2-((6-bromo-4-methoxypyridin-2-yl)carbamoyl)-4- fluoropyrrolidine-l-carboxylate (211) [0698] To an ice-cold solution of (2S,4R)~l-(/m-butoxycarbonyl)-4-fluoropyrro]idine-2- carboxylic acid (1 equiv) in DCM (10 vol) was added l-chloro-N,N,2-trimethyl-l-propenylamine ( 1.1 equiv) dropwise with stirring. The stirring was continued for 3 h at this temperature, and then <strong>[1158786-59-4]6-bromo-4-methoxypyridin-2-amine</strong> (1.1 equiv) was added, followed by DIEA (3 equiv). The cooling bath was removed and the reaction mixture was stirred overnight at rt. The reaction mixture was then added to water and extracted with DCM. The organic layer was washed successively with an aqueous solution of NaHCCb, water and brine, then dried over Na SC and concentrated under reduced pressure. The remaining residue was purified by column chromatography on silica gel (DCM/EtOAc) to give compound 211.
  • 3
  • [ 1005508-80-4 ]
  • [ 203866-14-2 ]
  • methyl 2-((2S,4R)-1-(tert-butoxycarbonyl)-4-fluoropyrrolidine-2-carboxamido)-6-chloroisonicotinate [ No CAS ]
YieldReaction ConditionsOperation in experiment
32% To a stirred solution of (2S,4R)-1-(tert-butoxycarbonyl)-4-fluoropyrrolidine-2-carboxylic acid (250 mg, 1.07 mmole) in 10 mL of CH2Cl2, was added 1-methyl imidazole (0.21 mL, 2.5 equiv.) at 0-5 C. under nitrogen atmosphere. The reaction mixture was stirred for 10 min at 0-5 C. and then added methane sulfonyl chloride (0.1 mL, 1.2 equiv) at the same temperature. It was stirred for 1 h at 0-50 C. Then <strong>[1005508-80-4]methyl 2-amino-6-chloroisonicotinate</strong> (201 mg, 1 equiv) was added, and stirred for 18 h at room temperature. Water (10 mL) was added to the reaction mixture, layers were separated and aqueous layer was extracted with DCM (3×10 mL). The combined organic layer was washed with 1N HCl (10 mL), followed by Sat NaHCO3 (10 mL) and then with brine (10 mL). Combined organic layer was dried over Na2SO4, concentrated and purified by ISCO (5% MeOH in DCM gradient) to obtain titled compound 130 mg (32% yield).
 

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