Generation and Reactions of Lithiated<i>tert</i>-Butyl and 2,6-Di(<i>tert</i>-butyl)-4-methylphenyl Cyclopropanecarboxylates
作者:Robert Häner、Thomas Maetzke、Dieter Seebach
DOI:10.1002/hlca.19860690720
日期:1986.10.29
tert-Butyl and 2,6-di(tert-butyl)-4-methylphenyl (BHT) cyclopropanecarboxylates (4, 6, 24, 25) are lithiated with LiN(i-Pr)2 and t-BuLi, respectively. Reactions with alkyl halides, aldehydes, acyl chlorides, and heteroelectrophiles give α-substituted BHT esters which can be cleaved (t-BuOK/H2O/THF) to the corresponding carboxylic acids or reduced (LiAlH4/THF) to the cyclopropanemethanols.
叔丁基和2,6-二(叔丁基)-4-甲基苯基(BHT)环丙烷羧酸酯(4,6,24,25)的与锂化的LiN(I-PR)2和吨分别正丁基锂。与烷基卤化物,醛,酰氯和杂亲电试剂的反应得到α-取代的BHT酯,其可以被裂解(t- BuOK / H 2 O / THF)成相应的羧酸或被还原(LiAlH 4 / THF)成环丙烷甲醇。
Oxa-spirocycles: synthesis, properties and applications
作者:Kateryna Fominova、Taras Diachuk、Dmitry Granat、Taras Savchuk、Vladyslav Vilchynskyi、Oleksiy Svitlychnyi、Vladyslav Meliantsev、Igor Kovalchuk、Eduard Litskan、Vadym V. Levterov、Valentyn R. Badlo、Ruslan I. Vaskevych、Alla I. Vaskevych、Andrii V. Bolbut、Volodymyr V. Semeno、Rustam Iminov、Kostiantyn Shvydenko、Anastasiia S. Kuznetsova、Yurii V. Dmytriv、Daniil Vysochyn、Vasyl Ripenko、Andrei A. Tolmachev、Olexandra Pavlova、Halyna Kuznietsova、Iryna Pishel、Petro Borysko、Pavel K. Mykhailiuk
DOI:10.1039/d1sc03615g
日期:——
A general practical approach to a new generation of spirocyclic molecules – oxa-spirocycles – is developed.
开发了一种新一代螺环分子 - 氧杂螺环 - 的一般实用方法。
HCV NS3 Protease Inhibitors
申请人:Liverton Nigel J.
公开号:US20100317623A1
公开(公告)日:2010-12-16
The present invention relates to macrocyclic compounds of formula (I) that are useful as inhibitors of the hepatitis C virus (HCV) NS3 protease, their synthesis, and their use for treating or preventing HCV infections.