Influence of solvent viscosity on the rate of hydrolysis of dipeptides by carboxypeptidase Y
作者:Yoshifumi Kanosue、Satoshi Kojima、Katsuo Ohkata
DOI:10.1002/poc.752
日期:2004.5
The influence of solventviscosity on the rate of enzymatic hydrolysis of a series of dipeptides (Z-Phe-Gly, Z-Phe-Sar, Z-Phe-Ala, Z-Phe-NMeAla, Z-Phe-Aib and Z-Phe-Pro) by carboxypeptidaseY was investigated. The effect of solventviscosity on the enzymatic hydrolysis revealed that whereas all kcat values decreased with viscosity, those of the N-alkyl peptides decreased more than those of the N-H
Process for preparing an angiotensin converting enzyme inhibitor
申请人:Industrial Technology Research Institute
公开号:US05869671A1
公开(公告)日:1999-02-09
A process for preparing an angiotensin converting enzyme inhibitor. Phosphorus pentachloride is reacted with the carboxylic acid group of an amino acid to form an acyl chloride hydrochloride. The resulting hydrochloride salt is then coupled with a silylated amino acid in a non-aqueous medium to form a high yield peptide. The peptide is used as an angiotensin converting enzyme (ACE) inhibitor.
Himbacine-Derived Thrombin Receptor Antagonists: C<sub>7</sub>-Aminomethyl and C<sub>9a</sub>-Hydroxy Analogues of Vorapaxar
作者:Mariappan V. Chelliah、Samuel Chackalamannil、Yan Xia、William J. Greenlee、Ho-Sam Ahn、Stan Kurowski、George Boykow、Yunsheng Hsieh、Madhu Chintala
DOI:10.1021/ml400452v
日期:2014.2.13
We have synthesized several C-7-aminomethyl analogues of vorapaxar that are potent PAR-1 antagonists. Many of these analogues showed excellent in vitro binding affinity and pharmacokinetics profile in rats. Compound 6a from this series showed excellent PAR-1 activity (K-i = 5 nM). We have also synthesized a C-9a-hydroxy analogue of vorapaxar, which showed very good PAR-1 affinity (K-i = 19.5 nM) along with excellent rat pharmacokinetic profile and ex vivo efficacy in the cynomolgus monkey.