Design and synthesis of HIV protease inhibitors. Variations of the carboxyterminus of the HIV protease inhibitor L-682,679
摘要:
A series of tetrapeptide analogues of 1 (L-682,679), in which the carboxy terminus has been shortened and modified, was prepared and their inhibitory activity measured against the HIV protease in a peptide cleavage assay. Selected examples were tested as inhibitors of virus spread in cell culture. Compound 12 was a 10-fold more potent enzyme inhibitor than 1 in vitro and 30-fold more potent in inhibiting the viral spread in cells.
Comparative analysis of pyrimidine substituted aminoacyl-sulfamoyl nucleosides as potential inhibitors targeting class I aminoacyl-tRNA synthetases
作者:Manesh Nautiyal、Steff De Graef、Luping Pang、Bharat Gadakh、Sergei V. Strelkov、Stephen D. Weeks、Arthur Van Aerschot
DOI:10.1016/j.ejmech.2019.04.003
日期:2019.7
synthesized compounds were determined. These highlighted a subtle interplay between the base moiety and the target enzyme in defining relative inhibitory activity. Encouraged by this data we investigated if the pyrimidine congeners could escape a natural resistance mechanism, involving acetylation of the amine of the aminoacyl group by the bacterial N-acetyltransferases RimL and YhhY. With RimL the pyrimidine
氨酰基-tRNA合成酶(aaRSs)催化氨基酸与其同源tRNA的ATP依赖性偶联。aaRSs对于蛋白质翻译至关重要,被认为是开发新型抗菌剂的有希望的目标。5'- O-(N-氨基酰基)-氨磺酰基腺苷(aaSA)是aaRS反应中间体的不可水解类似物,已显示是该酶家族的有效抑制剂,但易于化学不稳定和酶促修饰。为了改善该支架的分子性质,我们合成了一系列碱基取代的aaSA类似物,其包括靶向胞嘧啶,酪氨酰基和异亮氨酰-tRNA合成酶的胞嘧啶,尿嘧啶和N 3-甲基尿嘧啶。在体外九种抑制剂中的七种检测结果表明K i app值在低纳摩尔范围内。为了补充生物化学研究,淋病奈瑟氏球菌亮氨酰tRNA合成酶和大肠杆菌的X射线晶体学结构测定了与新合成的化合物复合的酪氨酰-tRNA合成酶。这些突显了在限定相对抑制活性中碱基部分和靶酶之间的微妙相互作用。受此数据的鼓励,我们研究了嘧啶同源物是否可以逃避天然抗性机制,涉及通
use of dipeptidyl peptidase IV inhibitors fOR IMPROVING FERTILITY
申请人:Ferring BV
公开号:EP1162969B1
公开(公告)日:2006-06-07
ONO, SEISHI;KITAGAWA, KOUKI;FUTAKI, SHIROH;KIYAMA, SHINYA;OOI, YOSHIHIRO;+, CHEM. AND PHARM. BULL., 37,(1989) N, C. 1925-1929