HEPATITIS C VIRUS INHIBITORS AND USES THEREOF IN PREPARATION OF DRUGS
申请人:CHANGZHOU YINSHENG PHARMACEUTICAL CO., LTD.
公开号:US20170253614A1
公开(公告)日:2017-09-07
A series of hepatitis C virus (HCV) inhibitors and compositions and applications thereof in the preparation of drugs for treating chronic HCV infection. Especially, a series of compounds that are used as NS5A inhibitors, and compositions and uses thereof in the preparations of drugs.
BODIPY analogues: synthesis and photophysical studies of difluoro boron complexes from 2-aminotropone scaffolds through <i>N</i>,<i>O</i>-chelation
作者:Bibhuti Bhusana Palai、Ramachandra Soren、Nagendra K. Sharma
DOI:10.1039/c9ob00915a
日期:——
fluorophore derivatives were prepared from a Pyrromethene scaffold and di-fluoroboron. To add to the range of biocompatible fluorophores, this report describes the synthesis and photophysical studies of carboxylate-functionalized BODIPY analogues from natural products, Tropolone and α-amino acids, through N,O-chelation. The structure of a few derivatives was confirmed by single crystalX-ray studies.
The First Biologically Active Synthetic Analogues of FK228, the Depsipeptide Histone Deacetylase Inhibitor
作者:Alexander Yurek-George、Alexander Richard Liam Cecil、Alex Hon Kit Mo、Shijun Wen、Helen Rogers、Fay Habens、Satoko Maeda、Minoru Yoshida、Graham Packham、A. Ganesan
DOI:10.1021/jm0703800
日期:2007.11.1
spiruchostatin bicyclic depsipeptide natural products are among the most potent histone deacetylase (HDAC) inhibitors known. Although FK228 is in advanced clinical trials, the complexity of the natural products has precluded mechanistic studies and the discovery of structure-activity relationships. By totalsynthesis, we have prepared the first depsipeptide analogues. Our results prove that the dehydrobutyrine
Triisobutylaluminium-Mediated Regioselective Protection of Sterically Hindered Amide NH of Cyclo-(AA-Gly): Key Building Block for Next-Generation Peptide Synthesis
regioselective Boc protection in the more stericallyhindered amide NH of unsymmetrical 2,5-diketopiperazines (DKPs) formed from glycine and various amino acids. Our research introduces a novel technique utilizing cost-effective triisobutylaluminium and trimethoxysilane. Notably, trimethoxysilane selectively reacts with the less hindered amide NH, facilitating the regioselective Boc protection of the
AITF (4-acetamidophenyl triflimide) mediated synthesis of amides, peptides and esters
作者:Eti Chetankumar、Swetha Bharamawadeyar、Chinthaginjala Srinivasulu、Vommina V. Sureshbabu
DOI:10.1039/d3ob01351k
日期:——
A simple, broadly applicable protocol for amidation and esterification reactions is described. Thereby, 4-acetamidophenyl triflimide (AITF), a crystalline stable reagent, is employed for the activation of carboxylic acids. The use of AITF as a coupling agent is demonstrated in the synthesis of peptides, amides and esters under mild conditions in good to excellent yields. Notably, peptide segment condensations