Compounds of the invention are useful in inhibiting thrombin and associated thrombotic occlusions having the following structure:
1
or a pharmaceutically acceptable salt thereof, e.g. where R
3
is —CH
2
NH
2
, —CH
2
CH
2
NH
2
, or —CH
2
NHC(O)OC(CH
3
)
3
.
Pyrrolidine modulators of chemokine receptor activity
申请人:Merck & Co., Inc.
公开号:US06265434B1
公开(公告)日:2001-07-24
The present invention is directed to pyrrolidine compounds of the formula 1:
(wherein R1, R2, R3, R4, R5, R6 and n are defined herein) which are useful as modulators of chemokine receptor activity. In particular, these compounds are useful as modulators of the chemokine receptors CCR-5 and/or CCR-3.
A Phosphetane Catalyzes Deoxygenative Condensation of α-Keto Esters and Carboxylic Acids via P<sup>III</sup>/P<sup>V</sup>═O Redox Cycling
作者:Wei Zhao、Patrick K. Yan、Alexander T. Radosevich
DOI:10.1021/ja511889y
日期:2015.1.21
A small-ring phosphacycle is found to catalyze the deoxygenative condensation of α-keto esters and carboxylic acids. The reaction provides a chemoselective catalytic synthesis of α-acyloxy ester products with good functional group compatibility. Based on both stoichiometric and catalytic mechanistic experiments, the reaction is proposed to proceed via catalytic P(III)/P(V)═O cycling. The importance
Simple and Mild Method for Preparation of .ALPHA.-Pyridinecarboxylates and .ALPHA.-Pyridyl Ketones via Trimethylstannyl Derivatives.
作者:Yutaka YAMAMOTO、Hidekazu OUCHI、Takuo TANAKA
DOI:10.1248/cpb.43.1028
日期:——
Alkoxycarbonylation and acylation at the α-position of pyridine, quinoline, and isoquinoline via the respective trimethylstannyl derivatives were satisfactorily performed by employing ethyl chloroglyoxylate and acylformyl chloride under mild conditions.
Compounds of the invention are useful in inhibiting thrombin and associated thrombotic occlusions having the following structure:
or a pharmaceutically acceptable salt thereof, wherein
A is