Home Cart Sign in  
Chemical Structure| 15761-39-4 Chemical Structure| 15761-39-4

Structure of Boc-Pro-OH
CAS No.: 15761-39-4

Chemical Structure| 15761-39-4

*Storage: {[sel_prStorage]}

*Shipping: {[sel_prShipping]}

,{[proInfo.pro_purity]}

Synonyms: NSC 164660; 1-tert-butyloxycarbonyl-L-Proline; N-Boc-L-Proline

4.5 *For Research Use Only !

{[proInfo.pro_purity]}
Cat. No.: {[proInfo.prAm]} Purity: {[proInfo.pro_purity]}

Change View

Size Price VIP Price

DE Stock

US Stock

Asia Stock

Global Stock

In Stock
{[ item.pr_size ]} Inquiry {[ getRatePrice(item.pr_usd,item.pr_rate,item.mem_rate,item.pr_is_large_size_no_price, item.vip_usd) ]}

  • {[ item.pr_size ]}

In Stock

- +

Please Login or Create an Account to: See VIP prices and availability

  • 1-2 Day Shipping
  • High Quality
  • Technical Support
Product Citations

Product Citations

Canale, Vittorio ; Kaminski, Michal ; Trybala, Wojciech ; Abram, Michal ; Marciniec, Krzysztof ; Bantreil, Xavier , et al.

Abstract: A solid-state approach was used to synthesize compound PZ-1190, a multitarget ligand for serotonin and dopamine receptors with potential antipsychotic activity in rodents. Compared to the classical batch synthesis approach, the developed multistep mechanochem. protocol improved the overall yield (from 32% to 56%), reduced the reaction time (from 42 to 4 h), and decreased the use of toxic reagents and organic solvents. All synthesized intermediates and PZ-1190 were isolated in high purity by extraction without the requirement of chromatog. purification PZ-1190 was obtained in high enantiomeric purity (≥99% ee) with no impact of grinding processes on the integrity of stereocenter. The described procedures represent rare examples of mechanochem. reduction of a carboxylic function, which might open up the possibility to obtain crucial β- and γ-amino alcs. in a sustainable manner. The oxidation of an aliphatic alc. into an aldehyde using mechanochem. has also been reported for the first time. The obtained results confirmed the suitability of mechanochem. as a sustainable and efficient method of synthesizing candidates for preclin. development.

Keywords: Azinesulfonamide derivatives ; Multistep mechanochemicalsynthesis ; Medicinal mechanochemistry ; Green chemistry ; Antipsychotic agents

Alternative Products

Product Details of [ 15761-39-4 ]

CAS No. :15761-39-4
Formula : C10H17NO4
M.W : 215.25
SMILES Code : O=C(O)[C@H]1N(C(OC(C)(C)C)=O)CCC1
Synonyms :
NSC 164660; 1-tert-butyloxycarbonyl-L-Proline; N-Boc-L-Proline
MDL No. :MFCD00037324
InChI Key :ZQEBQGAAWMOMAI-ZETCQYMHSA-N
Pubchem ID :85083

Safety of [ 15761-39-4 ]

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

Computational Chemistry of [ 15761-39-4 ] Show Less

Physicochemical Properties

Num. heavy atoms 15
Num. arom. heavy atoms 0
Fraction Csp3 0.8
Num. rotatable bonds 4
Num. H-bond acceptors 4.0
Num. H-bond donors 1.0
Molar Refractivity 58.36
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.

2.18
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

1.47
Log Po/w (WLOGP)?

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

1.09
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.

0.74
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

0.22
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.

-1.84
Solubility 3.14 mg/ml ; 0.0146 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.

-2.48
Solubility 0.712 mg/ml ; 0.00331 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

-0.38
Solubility 90.6 mg/ml ; 0.421 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.

-6.57 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)

2.62

Application In Synthesis of [ 15761-39-4 ]

* 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 [ 15761-39-4 ]

[ 15761-39-4 ] Synthesis Path-Downstream   1~54

  • 1
  • [ 15761-39-4 ]
  • [ 2886-33-1 ]
  • [ 90236-00-3 ]
  • 2
  • [ 15761-39-4 ]
  • [ 34622-39-4 ]
  • [ 25024-53-7 ]
  • [ 57818-01-6 ]
  • 3
  • [ 15761-39-4 ]
  • [ 13734-34-4 ]
  • [ 40350-83-2 ]
  • Boc-L-Arg(Tos)-OH [ No CAS ]
  • Boc-Ser(OBzl), Boc-Leu, Boc-Cys(Meb), Boc-Gly [ No CAS ]
  • [ 140661-85-4 ]
  • 4
  • [ 15761-39-4 ]
  • [ 13734-34-4 ]
  • [ 40350-83-2 ]
  • Boc-D-Arg(Tos)-OH [ No CAS ]
  • Boc-Ser(OBzl), Boc-Cys(Meb), Boc-Gly, Boc-Leu [ No CAS ]
  • [ 140661-90-1 ]
  • 5
  • [ 4530-20-5 ]
  • [ 15761-39-4 ]
  • [ 40350-83-2 ]
  • Boc-L-Arg(Tos)-OH [ No CAS ]
  • Boc-Phe, Boc-Ser(OBzl), Boc-Leu, Boc-Cys(Meb) [ No CAS ]
  • [ 140661-81-0 ]
  • 6
  • [ 15761-39-4 ]
  • [ 13734-34-4 ]
  • [ 40350-83-2 ]
  • Boc-L-Arg(Tos)-OH [ No CAS ]
  • Boc-Ser(OBzl), Boc-Cys(Meb), Boc-Gly [ No CAS ]
  • [ 140661-89-8 ]
  • 7
  • [ 15761-39-4 ]
  • [ 40350-83-2 ]
  • Boc-L-Arg(Tos)-OH [ No CAS ]
  • Boc-D-Arg(Tos)-OH [ No CAS ]
  • Boc-Gly, Boc-Phe, Boc-Ser(OBzl), Boc-Leu, Boc-D-Phe [ No CAS ]
  • [ 135701-67-6 ]
  • 8
  • [ 4530-20-5 ]
  • [ 15761-39-4 ]
  • [ 13836-37-8 ]
  • [ 40350-83-2 ]
  • Boc-Phe-OH, Boc-Ser(OBzl)-OH, Boc-D-Phe-OH, Boc-Leu-OH, Boc-D-Arg(Tos)-OH [ No CAS ]
  • [ 135701-67-6 ]
  • 9
  • [ 15761-39-4 ]
  • [ 13734-34-4 ]
  • [ 40350-83-2 ]
  • Boc-L-Arg(Tos)-OH [ No CAS ]
  • Boc-Leu, Boc-Cys(Meb), Boc-Gly [ No CAS ]
  • [ 140661-86-5 ]
  • 10
  • [ 15761-39-4 ]
  • [ 40350-83-2 ]
  • Boc-L-Arg(Tos)-OH [ No CAS ]
  • Boc-D-Arg(Tos)-OH [ No CAS ]
  • Boc-Ser(OBzl), Boc-Cys(Meb), Boc-Gly, Boc-D-Phe, Boc-Phe [ No CAS ]
  • [ 109333-26-8 ]
  • 11
  • [ 4530-20-5 ]
  • [ 15761-39-4 ]
  • [ 40350-83-2 ]
  • Boc-L-Arg(Tos)-OH [ No CAS ]
  • Boc-Phe, Boc-Ser(OBzl), Boc-Leu, Boc-D-Cys(Meb) [ No CAS ]
  • [ 140661-79-6 ]
  • 12
  • [ 4530-20-5 ]
  • [ 15761-39-4 ]
  • [ 40350-83-2 ]
  • Boc-L-Arg(Tos)-OH [ No CAS ]
  • Boc-Phe, Boc-Ser(OBzl), Boc-Leu, Boc-Cys(Meb) [ No CAS ]
  • [ 140661-79-6 ]
  • 13
  • [ 15761-39-4 ]
  • [ 13734-34-4 ]
  • [ 40350-83-2 ]
  • Boc-L-Arg(Tos)-OH [ No CAS ]
  • Boc-Ser(OBzl), Boc-Leu, Boc-D-Cys(Meb), Boc-Gly [ No CAS ]
  • [ 140661-87-6 ]
  • 14
  • [ 15761-39-4 ]
  • [ 13734-34-4 ]
  • [ 40350-83-2 ]
  • Boc-L-Arg(Tos)-OH [ No CAS ]
  • Boc-Ser(OBzl), Boc-Leu, Boc-Cys(Meb), Boc-Gly [ No CAS ]
  • [ 140661-87-6 ]
  • 15
  • [ 15761-39-4 ]
  • [ 13734-34-4 ]
  • [ 40350-83-2 ]
  • Boc-L-Arg(Tos)-OH [ No CAS ]
  • Boc-Ser(OBzl), Boc-Leu, Boc-D-Cys(Meb) [ No CAS ]
  • [ 140661-83-2 ]
  • 16
  • [ 15761-39-4 ]
  • [ 13734-34-4 ]
  • [ 40350-83-2 ]
  • Boc-L-Arg(Tos)-OH [ No CAS ]
  • Boc-Ser(OBzl), Boc-Leu, Boc-Cys(Meb) [ No CAS ]
  • [ 140661-83-2 ]
  • 17
  • [ 15761-39-4 ]
  • [ 13139-15-6 ]
  • [ 2592-18-9 ]
  • [ 69651-48-5 ]
  • Boc-Arg(x)-OH [ No CAS ]
  • H-Arg-Phg(4-OH)-Leu-Pro-Thr-OH [ No CAS ]
  • 18
  • [ 15761-39-4 ]
  • [ 13139-15-6 ]
  • [ 13836-37-8 ]
  • [ 69651-48-5 ]
  • Boc-Thr(OBzl)-resin [ No CAS ]
  • H-Arg-Phg(4-OH)-Leu-Pro-Thr-OH [ No CAS ]
  • 19
  • [ 15761-39-4 ]
  • [ 22259-53-6 ]
  • 2-[(1<i>H</i>-indol-3-ylmethyl)-carbamoyl]-pyrrolidine-1-carboxylic acid <i>tert</i>-butyl ester [ No CAS ]
  • 20
  • [ 15761-39-4 ]
  • [ 13734-34-4 ]
  • [ 40298-71-3 ]
  • [ 47355-10-2 ]
  • endomorphin 1 [ No CAS ]
  • 21
  • [ 15761-39-4 ]
  • [ 13734-34-4 ]
  • [ 40298-71-3 ]
  • [ 47355-10-2 ]
  • (S)-1-[(S)-2-Amino-3-(4-hydroxy-phenyl)-propionyl]-pyrrolidine-2-carboxylic acid {(S)-1-[(S)-1-carbamoyl-2-(1H-indol-3-yl)-ethylcarbamoyl]-2-phenyl-ethyl}-amide [ No CAS ]
  • 22
  • [ 15761-39-4 ]
  • Fmoc-Glu(tBu)-OHFmoc-Lue-OH [ No CAS ]
  • [ 228244-04-0 ]
  • 23
  • [ 15761-39-4 ]
  • Boc-MePhe-N(-CH2-Merrifield resin)-Phe-OMeBoc-Leu-OH [ No CAS ]
  • [ 38136-70-8 ]
  • 24
  • [ 15761-39-4 ]
  • Boc-MePhe-N(-CH2-Merrifield resin)-Phe-OMeBoc-Leu-OH [ No CAS ]
  • [ 142253-50-7 ]
  • 25
  • [ 15761-39-4 ]
  • [ 16741-80-3 ]
  • C21H30N2O5S [ No CAS ]
  • 26
  • [ 15761-39-4 ]
  • [ 16947-63-0 ]
  • C18H25N3O5 [ No CAS ]
  • 27
  • [ 15761-39-4 ]
  • [ 3321-03-7 ]
  • [ 76-05-1 ]
  • C2HF3O2*C16H21N3O4 [ No CAS ]
YieldReaction ConditionsOperation in experiment
Peptide analogs of RPPGF (Arg-Pro-Pro-<strong>[3321-03-7]Gly-Phe</strong>, SEQ ID NO:4) were prepared by traditional solid-phase peptide synthesis (Merrifield R B. J. Amer. Chem. Soc. 85, 2149-2154 (1963)) in conjunction with the ?tea-bag? methodology (Houghten R A. Proc. Natl. Acad. Sci. 82, 5131-5135 (1985)) using Boc/benzyl based chemistry. The peptides were assembled on Methylbenzhydrylamine resin (MBHA resin) using traditional Boc/Benzyl based chemistry. The protected amino acids were Boc-Arg (Tos), Boc-D-Arg (Tos), Boc-Gly, Boc-Phe, Boc-Pro, Boc-F5F, Boc-Hyp, Boc-Idg, Boc-Oic, Boc-Tic, and Boc-Thi with Boc being tert-butyloxycarbonyl, F5F being Pentafluorophenylanine, Hyp being L-4-Hydroxyproline, Idg being alpha-(2-indanyl)glycine, Oic being Octhydroindole-2-carboxylic acid, Tic being Tetrahydroisoquinoline-3-carboxylic acid, Thi being beta-(20Thienyl)-alanine, and Tos being Tosyl. In order to begin the synthesis, bags made of a polypropylene mesh material are filled with resin. The bags are then placed in a Nalgene bottle with dichloromethane (DCM) and shaken 5 min to allow the swelling of the resin. The DCM solution is then discarded and the actual synthesis is performed. The resin packets were washed 3 times, 2 minutes each time, with 5% diisopropylethylamine (DIEA) in DCM (neutralization step) then with DCM (2×1 min) to remove excess base. After neutralization, the packets are sorted and placed in Nalgene bottles containing the amino acid of interest in DCM. An equal amount of activator [diisopropylcarbodiimide (DIC)] in DCM is added and the coupling reaction is started. After shaking for 1 h, the packets are washed twice with DMF followed by a final two washes with DCM. The N-alpha-t-Boc is removed by acidolysis using 55% trifluoroacetonitril (TFA) in DCM for 30 min, leaving a TFA salt of the alpha-amino group. The bags are then washed successively with DCM (1×1 min), isopropanol (2×1 min) and DCM (1×1 min) to remove any residual TFA. This procedure is repeated for the addition of each amino acid at the coupling step. After completion of the synthesis and final tert-butyloxycarbonyl (Boc) removal, the peptides are side chain deprotected and cleaved from the resin at 0 C. with liquid hydrogen fluoride (HF) in the presence of anisole as a carbocation scavenger. The procedure is performed in a 10-vessel HF apparatus (Houghten et al. Int. J. Peptide Res. 27, 673-678 (1985)). The reaction is allowed to proceed for 60 min. Liquid HF is then removed using a strong flow of N2 for 90 min followed by the use of aspirator vacuum for 60 min while maintaining the temperature at 0 C. The reaction vessels were disconnected from the apparatus and the residual anisole was removed from the resin with two ethylether washes. The peptides are then extracted with 10% acetic hydroxide washes and the extraction solutions are pooled and lyophilized. The crude peptides are weighed and stored under nitrogen and subsequently analyzed by analytical RP-HPLC and by mass spectral analysis.
  • 28
  • boc-Gly-Merrifield resin [ No CAS ]
  • [ 15761-39-4 ]
  • [ 13734-41-3 ]
  • [ 13836-37-8 ]
  • [ 54613-99-9 ]
  • [ 81-88-9 ]
  • [ 108466-89-3 ]
  • [ 1229593-79-6 ]
  • 29
  • [ 15761-39-4 ]
  • [ 51012-64-7 ]
  • C19H25N3O2 [ No CAS ]
  • 30
  • [ 15761-39-4 ]
  • [ 228244-04-0 ]
YieldReaction ConditionsOperation in experiment
50% To a flame dried flask was added 2 grams (9.3 mmols) of N-Boc proline followed by 93 ml, of dichloromethane and 4.24 grams (41.85 mmols) of triethylamine. The reaction mixture was then cooled to -25 C. and 2.5 grams (18.6 mmols) of iso-butylchloroformate was added dropwise. After stirring for 45 minutes at this low temperature, 0.83 grams (49 mmol) of ammonia was added to the reaction mixture as a 7N solution in methanol. The flask was allowed to warm to ambient temperature and stir for an additional 16 hours. After this time, the reaction mixture was evaporated to dryness and reconstituted in 200 mL of EtOAc. The organic layer was washed four 15 mL portions of 1N HCl, dried with MgSO4 and evaporated to dryness. The crude material was then immediately dehydrated to the nitrile according to general procedure E using 1.9 grams (18.88 mmols) of triethylamine and 2.34 grams (11.16 mmols) of trifluoroacetic anhydride in 93 mL of THF. After standard work-up and purification techniques (column chromatography, 25% EtOAc in hexanes), 0.91 grams (4.65 mmols, 50%) of the title product was recovered as a yellow oil. 1H NMR (300 MHz, CDCl3) delta 4.53 (d, J=5.5 Hz, 0.5H), 4.48-4.38 (m, 0.5H), 3.57-3.41 (m, 1H), 3.41-3.22 (m, 1H), 2.31-1.92 (m, 4H), 1.47 (d, J=9.4 Hz, 9H). 13C NMR (75 MHz, CDCl3) delta 153.25, 119.38, 81.64, 47.39, 45.93, 31.86, 31.01, 28.52, 24.88, 24.04.
  • 32
  • [ 15761-39-4 ]
  • [ 4072-67-7 ]
  • [ 1007882-23-6 ]
YieldReaction ConditionsOperation in experiment
60.0 g 4,4?-Bis(2-bromoacetyl)biphenyl bOg was added to methylene dichloride (l000ml) andstirred to get solution. Boc-L-Proline (120g) was added to it. Diisopropylethylamine68.5g was added to the reaction mass at 15-25C. The reaction mass was stirred for about4 to 5h. The reaction mass was quenched by adding water. The aqueous layer was separated and organic layer was washed with aqueous acetic acid solution (Conc HC1 also can be used instead of acetic acid) till pH of aqueous layer was between 4-6. Theorganic layer was washed with water and distilled under vacuum to get a residue. The residue was dissolved in toluene and toluene solution was used further. Ammonium acetate 390g was added to the toluene solution and the reaction mass was stirred. The reaction mass heated to 95-105C and maintained till completion of reaction. After completion of the reaction, the reaction mass was cooled to 50-60C, methanol wasadded and the reaction mass cooled to 20-30C and stirred for 2 to 3 hours. The solid was filtered and washed with toluene. Purity of crude:- 93.92%.Crude wet cake was stirred in mixture of toluene, methanol and acetic acid and the reaction mass was heated to 60- 70C, water was added to reaction mass at 60-70C and the reaction mass cooled to 20-30C and stirred. The solid obtained was filtered and washed with toluene and then withwater. Wet solid was dried. Purity - 97.04%. The above purification was repeated to obtain 60.Og of the title compound in a purity of 98.97%.
  • 33
  • [ 15761-39-4 ]
  • [ 228244-04-0 ]
  • 34
  • [ 15761-39-4 ]
  • [ 39095-25-5 ]
  • [ 1588517-22-9 ]
  • 35
  • [ 15761-39-4 ]
  • [ 55984-93-5 ]
  • [ 1588517-23-0 ]
  • [ 1588517-24-1 ]
  • 36
  • [ 82104-74-3 ]
  • [ 15761-39-4 ]
  • [ 1588517-25-2 ]
  • 37
  • polyethylene glycol polyamide resin [ No CAS ]
  • [ 15761-39-4 ]
  • [ 23680-31-1 ]
  • [ 61925-77-7 ]
  • [ 47689-67-8 ]
  • [ 170384-29-9 ]
  • C60H69BrN7O13PolS [ No CAS ]
  • 38
  • [ 15761-39-4 ]
  • [ 84-67-3 ]
  • (2S,2'S)-di-tert-butyl 2,2'-(((2,2'-dimethyl-[1,1'-biphenyl]-4,4'-diyl)bis(azanediyl))bis(carbonyl))bis(pyrrolidine-1-carboxylate) [ No CAS ]
YieldReaction ConditionsOperation in experiment
96% With N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; In dichloromethane; at 20℃; for 2h; General procedure: 5.1.1.14. (2S,2'S)-Di-tert-butyl 2,2'-(((3,3'-dimethyl-[1,1'-biphenyl]-4,4'-diyl)bis(azanediyl))bis(carbonyl))bis(pyrrolidine-1-carboxylate) (17). A mixture of N-Boc-L-proline (9.47 g, 44.0 mmol), EDCI(9.97 g, 52.0 mmol), and ortho-tolidine (4.25 g, 20.0 mmol) inCH2Cl2 (30 mL) was stirred at ambient temperature for 2 h. Theresulting residue was partitioned between CH2Cl2 and H2O. Theorganic layer was washed with 1.0 N aq HCl solution and brine,dried over MgSO4, filtered, and concentrated in vacuo. Without anypurification, 3 was obtained as a solid (11.3 g, 93percent).; 5.1.1.16 (2S,2'S)-Di-tert-butyl 2,2'-(((2,2'-dimethyl-[1,1'-biphenyl]-4,4'-diyl)bis(azanediyl))bis(carbonyl))bis(pyrrolidine-1-carboxylate) (19) Yield 2.75 g (96percent). 1H NMR (DMSO-d6, delta = 2.5 ppm, 400 MHz): 9.97 (s, 2H), 7.57-7.41 (m, 4H), 6.97 (app br s, 2H), 4.26 (m, 2H), 3.42-3.35 (m, 4H), 2.21 (m, 2H), 1.97 (s, 6H), 1.89-1.78 (m, 6H), 1.40-1.31 (app br s, 18H). 13C NMR (DMSO-d6, delta = 39.52 ppm, 100 MHz): 171.4, 171.0, 153.6, 153.2, 138.0, 138.0, 135.69, 135.65, 129.52, 120.48, 120.47, 120.4, 120.3, 116.7, 116.5, 78.6, 78.4, 60.3, 60.0, 46.7, 46.5, 31.3, 31.1, 30.2, 28.1, 28.0, 23.9, 23.3, 19.7. HRMS: Anal. calcd. for [M+H]+ C34H46N4O6: 607.3490; found 607.3489.
96% With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In dichloromethane; at 20℃; for 2h; Example 3 Preparation of dimethyl((1R,1'R)-((2S,2'S)-2,2'-(((2,2'-dimethyl-[1,1'-biphenyl]-4,4'-diyl)bis(azandiyl))bis(carbonyl))bis(pyrrolidine-2,1-diyl))bis(2-oxo-1-phenylethane-2,1-diyl))dicarbamate N-Boc-L-proline (2.23 g, 10.4 mmol), EDC (2.35 g, 12.3 mmol), and <strong>[84-67-3]meta-tolidine</strong> (1.0 g, 4.7 mmol) were mixed in CH2Cl2 (10 mL), followed by stirring at room temperature for 2 hours. Then, the compound obtained above was fractionated with CH2Cl2 and H2O. The organic layer was washed with 1 N HCl aqueous solution and brine, dried over MgSO4, filtered, and concentrated under reduced pressure. Without any additional purification process, (2S,2'S)-di-tert-butyl 2,2'-(((2,2'-dimethyl-[1,1'-biphenyl]-4,4'-diyl)bis(azandiyl))bis(carbonyl))bis(pyrrolidine-1-carboxylate), the target compound, was obtained as a solid (2.75 g, yield: 96percent).
  • 39
  • [ 15761-39-4 ]
  • [ 84-67-3 ]
  • dimethyl((1R,1'R)-((2S,2'S)-2,2'-(((2,2'-dimethyl-[1,1'-biphenyl]-4,4'-diyl)bis(azandiyl))bis(carbonyl))bis(pyrrolidine-2,1-diyl))bis(2-oxo-1-phenylethane-2,1-diyl))dicarbamate [ No CAS ]
  • 40
  • [ 15761-39-4 ]
  • [ 13734-41-3 ]
  • [ 13139-15-6 ]
  • [ 15761-38-3 ]
  • [ 13726-85-7 ]
  • [ 29022-11-5 ]
  • [ 13734-34-4 ]
  • [ 13836-37-8 ]
  • 2-(decyldisulfanyl)pyridine [ No CAS ]
  • [ 23680-31-1 ]
  • [ 122889-11-6 ]
  • [ 73821-97-3 ]
  • [ 54613-99-9 ]
  • [ 25024-53-7 ]
  • fmoc-S-4-methoxytrityl-L-cysteine [ No CAS ]
  • C151H256N48O39S [ No CAS ]
YieldReaction ConditionsOperation in experiment
10.2% The titled peptide was synthesized on a model 430A peptide synthesizer (Applied Rio systems, Foster City, Calif., U.S.A.) which was modified to do accelerated Hoc-chemistry solid phase peptide synthesis (Schnolzer, M. et al., mt. J Peptide Protein Res., (1992), 40:180). 4-Methylbenzhydry- lamine (MHHA) resin (Peninsula, Helmont, Calif., U.S.A.), with a substitution of0.91 mmol/g was used. Hoc amino acids (Midwest Hio-Tech, Fishers, Ind., U.S.A.; Novabiochem., San Diego, Calif., U.S.A.) were used with the following side chain protection: Hoc-Ala-OH, Hoc-Arg(Tos)-OH, Hoc-His (DNP)-OH, Hoc-Val-OH, Hoc-Ecu-OH, Hoc-Gly-OH, HocGln-OH, Hoc-Eys(2C1Z)?--OH, Hoc-Ser(Hzl)-OH, Hoc-PheOH, Hoc-Glu(OcHex)-OH and Hoc-Pro-OH. Fmoc-Glu (OtHu)-OH (Novabiochem, San Diego, Calif., U.S.A.) was used for the residue at the 3rd position in the sequence. The synthesis was carried out on a 0.25 mmol scale. The Hoc groups were removed by two treatments with 100percent TFA each lasting one minute. Hoc amino acids (2.5 mmol) were preactivated with HH11J (2.0 mmol) and DIEA (1.0 mE) in 4 mE of DMF and were coupled without prior neutralization of the peptide-resin TFA salt. Coupling times were 5 minutes. At the end of the assembly of the first 25 residues on theAHI 430A® peptide synthesizer and before the coupling of Fmoc-Glu (OtHu)-OH, the protected peptide-resin was transferred into a reaction vessel on a shaker for manual synthesis. After removing the Hoc protecting group with two, one-minute treatments with 100percent TFA and a washing with DMF, the resin was mixed with Fmoc-Glu(OtHu)-OH (2.5 mmol) which was preactivated with HHTU (2.0 mmol), HOHt (2.0 mmol) and DIEA (1.0 mE) in 4 mE of DMF. The mixture was shaken for 2 hours. This coupling step was repeated. After washing with DMF, the resin was treated with a TFA solution containing 5percent water and 5percent TIS for 2 hours to remove the tHu protecting group in the side chain of the Glu residue. The resin was neutralized with 10percent DIEA in DMF and washed with DMF and DCM. The resin was then treated twice with hexylamine (2.0 mmol), DIC (2.0 mmol), HOHt (2.0 mmol) in 5 ml of DCM for two hours per treatment. The resin was washed with DMF and treated with 25percent piperidine in DMF for 30 minutes to remove the Fmoc protecting group. Afier washing with DMF and DCM, the resin was transferred into the reaction vessel on the AHI 430A peptide synthesizer for the assembly of the rest two residues. At the end of the assembly of the whole peptide chain, the resin was treated with a solution of 20percent mercaptoethanol/10percent DIEA in DMF for 2x30 mm to remove the DNP group on the His side chain. The N-terminal Hoc group was then removed by two treatments of 100percent TFA for 2 minutes. The peptide-resin was washed with DMF and DCM and dried under reduced pressure. The final cleavage was done by stirring the peptide-resin in 10 mE of HF containing 1 mE of anisole and dithiothreitol (50 mg) at 0° C. for 75 minutes. HF was removed by a flow of nitrogen. The residue was washed with ether (6x 10 mE) and extracted with 4N HOAc (6x10 mE). This crude product was purified on a reverse-phase preparative HPEC using a colunm (4x43 cm) of C18 DYNAMAX-100A°® (Varian, Walnut Creek, Calif., U.S.A.). The column was eluted with a linear gradient from 75percentAand25percent B to 55percentAand45percent B at flow rate of 10 mE/mm in an hour where A was 0.1percent TFA in water and B was 0.1percent TFA in acetonitrile. Fractions were collected and checked on an analytical HPEC. Those containing pure product were combined and lyophilized to dryness. 31.8 mg of a white solid was obtained. Purity was 89percent based on analytical HPEC analysis. Electro-spray ionization mass spectrometry (ESI MS) analysis gave the molecular weight at 3368.4 (in agreement with the calculated molecular weight of 3368.9).
  • 41
  • [ 15761-39-4 ]
  • [ 745017-94-1 ]
  • 42
  • [ 15761-39-4 ]
  • [ 33209-01-7 ]
  • (S)-2-(((2S,3R)-1-amino-3-hydroxy-1-oxobutane-2-yl)carbamoyl)pyrrolidine-1-formic acid tert-butyl [ No CAS ]
YieldReaction ConditionsOperation in experiment
36.2% The N-tert-butoxycarbonyl-L-proline 1e (2.15 g, 10 mmol, using known method "Organic Letters, 2014, 16 (2), 432 - 435" prepared by the) dissolved in 50 ml dichloromethane in, adding 1-(3-dimethylaminopropyl)-3-ethyl carbodiimide (2.3 g, 12 mmol), 1-hydroxy benzotriazole (1.62 g, 12 mmol) and N-methyl morpholine (3.3 ml, 30 mmol), stirring reaction for 1 hour, adding <strong>[33209-01-7]L-<strong>[33209-01-7]threonine amide hydrochloride</strong></strong> (1.55 g, 10 mmol, the Patent application "WO20050182262" disclosed method prepared), stirring for 16 hours. The reaction solution is added in 200 ml dichloromethane, for 1 M salt is washed with an acid (50 ml), anhydrous sodium sulfate drying, filtering, the filtrate is concentrated, with silica gel column chromatography using eluent system A purifying the obtained residue, to obtain the title compound 1 f (1.14 g, white foam solid), yield: 36.2percent.
  • 43
  • [ 129013-83-8 ]
  • [ 15761-39-4 ]
  • tert-butyl 2-(4-(pyridin-3-yl)phenyl)pyrrolidine-1-carboxylate [ No CAS ]
  • 45
  • [ 15761-39-4 ]
  • [ 142253-50-7 ]
  • 46
  • [ 15761-39-4 ]
  • [ 430-67-1 ]
  • [ 5680-79-5 ]
  • [ 108-24-7 ]
  • [ 40350-83-2 ]
  • Ac-Pro-Hyp-Gly-OCH<SUB>2</SUB>CHF<SUB>2</SUB> [ No CAS ]
  • 47
  • [ 13329-40-3 ]
  • [ 6018-89-9 ]
  • [ 15761-39-4 ]
  • [ 13031-43-1 ]
  • 2-(4-acetylphenyl) 1-(tert-butyl) pyrrolidine-1,2-dicarboxylate [ No CAS ]
  • 48
  • [ 13329-40-3 ]
  • [ 6018-89-9 ]
  • [ 15761-39-4 ]
  • [ 13031-43-1 ]
  • 2-(4-acetylphenyl) 1-(tert-butyl) pyrrolidine-1,2-dicarboxylate [ No CAS ]
  • [ 98-86-2 ]
  • 49
  • [ 6018-89-9 ]
  • [ 15761-39-4 ]
  • [ 73852-88-7 ]
  • 1-(tert-butyl) 2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)pyrrolidine-1,2-dicarboxylate [ No CAS ]
  • [ 480424-70-2 ]
  • 50
  • [ 22300-52-3 ]
  • [ 15761-39-4 ]
  • tert-butyl 2-(4,5-dibromo-2H-1,2,3-triazol-2-yl)pyrrolidine-1-carboxylate [ No CAS ]
  • 51
  • [ 15761-39-4 ]
  • [ 6294-52-6 ]
  • (S)-tert-butyl 2-((5,6-dimethoxybenzo[d]thiazol-2-yl)carbamoyl)pyrrolidine-1-carboxylate [ No CAS ]
  • 52
  • [ 13472-61-2 ]
  • [ 15761-39-4 ]
  • [ 4627-10-5 ]
  • C23H37BN2O5 [ No CAS ]
  • 53
  • [ 13472-61-2 ]
  • [ 15761-39-4 ]
  • tert-butyl 2-(2-hydroxy-2-(6-methoxypyridin-3-yl)ethyl)pyrrolidine-1-carboxylate [ No CAS ]
  • 54
  • [ 1034287-04-1 ]
  • [ 15761-39-4 ]
  • tert-butyl (Z)-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)styryl)pyrrolidine-1-carboxylate [ No CAS ]
  • tert-butyl 2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)styryl)pyrrolidine-1-carboxylate [ No CAS ]
 

Historical Records

Technical Information

Categories