Configurationally Stable (<i>S</i>)- and (<i>R</i>)-α-Methylproline-Derived Ligands for the Direct Chemical Resolution of Free Unprotected β<sup>3</sup>-Amino Acids
作者:Shengbin Zhou、Shuni Wang、Jiang Wang、Yong Nian、Panfeng Peng、Vadim A. Soloshonok、Hong Liu
DOI:10.1002/ejoc.201800120
日期:2018.4.23
A series of nonracemizable ligands are synthesized for the direct chemical resolution of various unprotected β3‐amino acids with high enantioselectivity and yields. One of the obtained free enantiomerically pure β‐amino acids can be applied directly as a starting material for the synthesis of the anti‐HIV drug maraviroc in an overall yield of 49 % in six steps.
[EN] BISPIPERIDINES AS ANTITHROMBOTIC AGENTS<br/>[FR] BISPIPERIDINES COMME AGENTS ANTITHROMBOTIQUES
申请人:LAFON LABOR
公开号:WO2000003986A1
公开(公告)日:2000-01-27
La présente invention concerne des composés de formule (I) dans laquelle R1, R2, R3, Z1, Z2 et A sont tels que définis à la revendication 1. Ces composés sont des inhibiteurs de la fixation du fibrinogène sur les récepteurs plaquettaires Gp IIb/IIIa et sont utilisables en thérapeutique comme antithrombotiques.
Synthesis and biological evaluation of 3-phenyl-3-aryl carboxamido propanoic acid derivatives as small molecule inhibitors of retinoic acid 4-hydroxylase (CYP26A1)
All-trans-retinoic acid (ATRA), the biologically active metabolite of vitamin A, is used medicinally for the treatment of hyperproliferative diseases and cancers. However, it is easily metabolized. In this study, the leading compound S8 was found based on virtual screening. To improve the activity of the leading compound S8, a series of novel S8 derivatives were designed, synthesized and evaluated for their in vitro biological activities.All of the prepared compounds showed that substituting the 5-chloro-3-methyl-1-phenyl-1H-pyrazole group for the 2-tertbutyl-5-methylfuran scaffold led to a clear increase in the biological activity. The most promising compound 32, with a CYP26A1 IC50 value of 1.36 mu M (compared to liarozole (IC50 = 2.45 mu M) and S8 (IC50 = 3.21 mu M)) displayed strong inhibitory and differentiation activity against HL60 cells. In addition, the study focused on the effect of beta-phenylalanine, which forms the coordination bond with the heme of CYP26A1. These studies suggest that the compound 32 can be used as an appropriate candidate for future development. (C) 2014 Elsevier Ltd. All rights reserved.