Tandem RCM of Dienynes for the Construction of Taxol-Type Carbocyclic Systems
摘要:
[GRAPHICS]Tandem ring-closing metathesis of hydrindanone dienynes allows access to taxosteroids, a new class of compounds that combine the [5.3.1] carbocyclic system of taxanes with rings C and D of the steroid skeleton.
Dienyne Ring-Closing Metathesis Approach for the Construction of Taxosteroids
作者:María J. Aldegunde、Rebeca García-Fandiño、Luis Castedo、Juan R. Granja
DOI:10.1002/chem.200601685
日期:2007.6.15
hybrid compounds-the taxosteroids-possessing carbon frameworks incorporating moieties characteristic of both taxanes (such as ABrings) and steroids (i.e., CD system and side chain). This tandem cyclization is highly stereoselective, allowing the one-step formation of the bicyclo[5.3.1]undecene system characteristic of taxol. In this work we describe the scope and limitations of such cyclizations.
PROCESS OF OBTAINING TAXOSTEROIDS AND PRECURSORS THEREOF
申请人:Granja Guillan Juan
公开号:US20070185108A1
公开(公告)日:2007-08-09
The present invention relates to a process of obtaining taxosteroids and precursors thereof from the hydrindane bicyclic ring system. The compounds have a tetracyclic system which combines the structural characteristics of taxanes, such as the bicyclo[5.3.1]undecane system (cycles A and B), fused to a six-membered ring (C), and of steroids, such as the CD bicycle, the A ring and the side chain (Sc). The process of preparing the compounds and their application as compositions with pharmacological properties of interest are described.