Synthesis of Enantio- and Diastereomerically Pure, Tetra- and Penta-Substituted Cyclopentanes by the Desymmetrization of <i>endo</i>-Norborn-5-ene-2,3-dicarboxylic Anhydrides
作者:David E. Hibbs、Michael B. Hursthouse、Iwan G. Jones、Wyn Jones、K. M. Abdul Malik、Michael North
DOI:10.1021/jo990140v
日期:1999.7.1
(S)-prolinate followed by ozonolysis of the resulting carboxylic acids is used to prepare enantio- and diastereomericallypure, tetra- and penta-substituted cyclopentane derivatives in which all of the substituents on the cyclopentane ring are syn to one another. The initial products of this chemistry (2a,b and 18a,b) contain two aldehyde groups, one of which exists as a hemiacetal. This allows subsequent chemistry