[EN] 18F-LABELLED BARBITURATE COMPOUNDS FOR USE AS POSITRON EMISSION IMAGING AGENTS [FR] COMPOSÉS BARBITURIQUES MARQUÉS AU 18F, CONVENANT COMME AGENTS D'IMAGERIE PAR ÉMISSION DE POSITRONS
Novel compounds and compositions as protease inhibitors
申请人:——
公开号:US20020052378A1
公开(公告)日:2002-05-02
The present invention relates to novel cysteine protease inhibitors of Formula I:
1
the pharmaceutically acceptable salts and N-oxide derivatives thereof, their use as therapeutic agents and methods of making them.
polymerase (RdRp) is a key enzyme for HepatitisCVirus (HCV) replication. In addition to the catalytic site, this enzyme is characterized by the presence of at least four allosteric pockets making it an interesting target for development of inhibitors as potential anti-HCV drugs. Based on a previous study showing the potential of the naturally occurring aurones as inhibitors of NS5B, we pursued our efforts
Iron‐Catalyzed Tertiary Alkylation of Terminal Alkynes with 1,3‐Diesters via a Functionalized Alkyl Radical
作者:Ming‐Qing Tian、Zhen‐Yao Shen、Xuefei Zhao、Patrick J. Walsh、Xu‐Hong Hu
DOI:10.1002/anie.202100641
日期:2021.4.19
Direct oxidative C(sp)−H/C(sp3)−H cross‐coupling offers an ideal and environmentally benign protocol for C(sp)−C(sp3) bond formations. As such, reactivity and site‐selectivity with respect to C(sp3)−H bond cleavage have remained a persistent challenge. Herein is reported a simple method for iron‐catalyzed/silver‐mediated tertiary alkylation of terminal alkynes with readily available and versatile 1
Metal-Free Hydrogenation of Electron-Poor Allenes and Alkenes
作者:Blanca Inés、David Palomas、Sigrid Holle、Sebastian Steinberg、Juan A. Nicasio、Manuel Alcarazo
DOI:10.1002/anie.201205348
日期:2012.12.3
The poorer, the better: A metal‐free catalytic procedure for the reduction of electron‐poor allenes and alkenes has been developed. The method employs a frustrated Lewis pair based catalyst. 1,4‐Diazabicyclo[2.2.2]octane (DABCO)/B(C6F5)3 was shown to be the best combination in optimization studies.
越差越好:已开发出一种用于减少电子贫乏的烯和烯烃的无金属催化方法。该方法使用沮丧的路易斯对基催化剂。1,4-二氮杂双环[2.2.2]辛烷(DABCO)/ B(C 6 F 5)3被证明是优化研究的最佳组合。
Unnatural α-amino ethyl esters from diethyl malonate or ethyl β-bromo-α-hydroxyiminocarboxylate
作者:Eloi P Coutant、Vincent Hervin、Glwadys Gagnot、Candice Ford、Racha Baatallah、Yves L Janin
DOI:10.3762/bjoc.14.264
日期:——
We have explored here the scope of the age-old diethyl malonate-based accesses to α-aminoesters involving Knoevenagel condensations of diethyl malonate on aldehydes, reductions of the resulting alkylidenemalonates, the preparation of the corresponding α-hydroxyimino esters and their final reduction. This synthetic pathway turned out to be general although some unexpected limitations were encountered