Remarkable enhancement effect of potassium tert-butoxide/THF solution in base-induced Sommelet–Hauser rearrangements
摘要:
A solution of potassium tert-butoxide in THF was shown to remarkably enhance the base-induced Sommelet-Hauser rearrangement of N-benzylic amino acid-derived ammonium ylides. (C) 2010 Elsevier Ltd. All rights reserved.
DOI:
10.1016/j.tet.2010.09.105
作为产物:
描述:
甲基丁胺 、 溴乙酰溴 在
乙醚 、 residue 作用下,
以
乙醚 、 水 为溶剂,
-20.0~83.0 ℃
、666.61 Pa
条件下,
反应 0.5h,
以to obtain 19.36 g of the desired product的产率得到N-butyl-N-methyl-2-bromoacetamide
Novel 19-nor-steroids of the formula ##STR1## wherein the A and B rings have a structure selected from the group consisting of ##STR2## having hormonal properties and their preparation and intermediates.
Design and Preparation of Room-Temperature Ionic Liquids Containing Biodegradable Side Chains
作者:N. Gathergood、P. J. Scammells
DOI:10.1071/ch02148
日期:——
Novel room-temperature ionic liquids with potential sites of enzymatic hydrolysis have been prepared and tested for biodegradable properties.
制备了具有潜在酶水解位点的新型室温离子液体,并对其生物降解特性进行了测试。
BENZOCYCLOHEPTENES, PROCESS FOR THEIR PRODUCTION, PHARMACEUTICAL PREPARATIONS THAT CONTAIN THE LATTER AS WELL AS THEIR USE FOR THE PRODUCTION OF PHARMACEUTICAL AGENTS
申请人:——
公开号:US20020068765A1
公开(公告)日:2002-06-06
This invention describes the new benzocycloheptenes of general formula I
1
in which
R
1
, R
2
and SK have the meanings that are indicated in the description. The new compounds have selective estrogenic activity on bones and are suitable for the production of pharmaceutical agents, especially for prophylaxis and therapy of osteoporosis.
Triphenylethylenes, process for their production, pharmaceutical
申请人:Schering Aktiengesellschaft
公开号:US05807899A1
公开(公告)日:1998-09-15
This invention describes the new triphenylethylenes of general formula I ##STR1## in which n means an integer from 1 to 10, R' means a sulfur-containing organic radical, R" means a hydrogen atom, an iodine atom or a hydroxy groups, E means a hydrogen atom, G means a hydrogen atom or E and G together mean a methylene bridge. The new compounds have strong antiestrogenic properties and are suitable for the production of pharmaceutical agents, for example for treating breast cancer.
[EN] NOVEL BENZO-1,3-DIOXOLYL- AND BENZOFURANYL SUBSTITUTED PYRROLIDINE DERIVATIVES AS ENDOTHELIN ANTAGONISTS<br/>[FR] DERIVES DE PYRROLIDINE A SUBSTITUTION BENZO-1,3-DIOXOLYL ET BENZOFURANYL SERVANT D'ANTAGONISTES DE L'ENDOTHELINE
申请人:ABBOTT LABORATORIES
公开号:WO1997030045A1
公开(公告)日:1997-08-21
(EN) A compound of formula (I), or a pharmaceutically acceptable salt thereof is disclosed, as well as processes for and intermediates in the preparation thereof, and a method of antagonizing endothelin.(FR) La présente invention concerne un composé représenté par la formule générale (I) ou l'un de ses sels galéniques. L'invention, qui concerne également des procédés convenant à leur préparation, concerne aussi des intermédiaires pour de telles préparations. L'invention concerne enfin un procédé de réalisation d'une fonction antagoniste de l'endothéline.