Dihydropyrimidine compounds and compositions containing the same
申请人:Ohno Seiji
公开号:US06855716B2
公开(公告)日:2005-02-15
Dihydropyrimidine derivatives of the following formula or analogs thereof have selective N-type calcium channel antagonistic activity, and they are used as therapeutic agents for various diseases participating in the N-type calcium channels.
SmI2-promoted intra- and intermolecular C–C bond formation with chiral N-acyl oxazolidinones
作者:Rolf H. Taaning、Laura Thim、Jacob Karaffa、Araceli G. Campaña、Anna-Mette Hansen、Troels Skrydstrup
DOI:10.1016/j.tet.2008.09.044
日期:2008.12
The suitability of chiral oxazolidinones in the SmI2-mediated C–C bond generation between the imide functionality of an N-acyloxazolidinone unit and an olefinic radical acceptor, in both inter- and intramolecular reactions, was investigated. It was shown that the products from an Evans asymmetric alkylation can undergo direct carbon–carbon bond formation with an acrylamide providing chiral acyclic
Stereoselective construction of a 5-aza-spiro[2,4]heptane motif via catalytic asymmetric 1,3-dipolar cycloaddition of azomethine ylides and ethyl cyclopropylidene acetate
作者:Tang-Lin Liu、Zhao-Lin He、Hai-Yan Tao、Yue-Peng Cai、Chun-Jiang Wang
DOI:10.1039/c0cc04329j
日期:——
A direct and facile synthesis of highly functional 5-aza-spiro[2,4]heptanes, a valuable structural motif for drug discovery, is developed via catalytic asymmetric 1,3-dipolarcycloaddition of cyclopropylidene acetate and azomethine ylides for the first time.