Phase managed organic synthesis 2. A new polymer assisted synthesis of acid anhydrides.
作者:Wilmer K. Fife、Zhi-dong Zhang
DOI:10.1016/s0040-4039(00)85100-x
日期:1986.1
A solid-phase copolymer of 4-vinylpyridine is shown to be a highly effective reagent/ catalyst for the synthesis of acid anhydrides from mixtures containing equimolar quantities of carboxylic acids and acid chlorides. The process may be carried out in batch or column mode.
Gold mediated sp<sup>3</sup>αC-H functionalization of steroidal diglycoside and their anti-cancer evaluation
作者:Shravankumar Kankala、Ravinder Vadde
DOI:10.1080/14786419.2019.1696789
日期:2021.10.2
Abstract C(sp3)-H alkylation at α-position of methyl-keto group on D-ring of Steroidal diglycoside (SG) with (i) C=N of Schiff base imines to form amine derivatives and (ii) C=C of acrylate Michael acceptors to form Markovnikov ester products using AuCl3/NHC as pre-catalyst and Ag(I) salts as co-catalyst was described. The original form of SG (1) and its derivatives (3b-f & 5a-d) were screened for
[EN] A NEW PRODUCTION METHOD AND NEW INTERMEDIATES OF SYNTHESIS OF ELVITEGRAVIR<br/>[FR] NOUVEAU PROCÉDÉ DE PRODUCTION ET NOUVEAUX INTERMÉDIAIRES DE SYNTHÈSE D'ELVITEGRAVIR
申请人:ZENTIVA KS
公开号:WO2014056464A1
公开(公告)日:2014-04-17
The present solution relates to an improved production method of elvitegravir of formula I, which is being clinically evaluated for treatment of HIV infection. Elvitegravir of formula I is produced via the intermediate of formula II, the preparation of which is also an object of the present solution.
[EN] A NEW PROCESS FOR THE PREPARATION OF ELVITEGRAVIR<br/>[FR] NOUVEAU PROCÉDÉ POUR LA PRÉPARATION D'ELVITÉGRAVIR
申请人:ZENTIVA KS
公开号:WO2015003670A1
公开(公告)日:2015-01-15
The invention relates to a process for the production of elvitegravir of formula (I), which is obtained by reaction of the general intermediate of formula (V) with 3-chloro-2-fluorobenzyl zinc bromide, producing the intermediate of formula (VII), which is converted to elvitegravir of formula (I) by reaction with reagents suitable for deprotection. Substituent X is CI, Br or I and PG is any protecting group suitable for protection of the carboxyl function or alcohols. (Formulae (I), (V), (VII))
[EN] PROPENOYL HYDRAZIDES<br/>[FR] HYDRAZIDES DE PROPENOYLE
申请人:GEORGIA TECH RES INST
公开号:WO2005080353A1
公开(公告)日:2005-09-01
The present disclosure provides compositions for inhibiting proteases, methods for synthesizing the compositions, and methods of using the disclosed protease inhibitors. Aspects of the disclosure include a peptidyl propenoyl hydrazide compositions that inhibit proteases, for example cysteine proteases, either in vivo or in vitro.