Taxoid C-ring building blocks from Hajos–Parrish ketone. Practical synthesis of an enantiomerically pure taxoid ABC ring system
作者:José Ignacio Martı́n Hernando、José Quı́lez del Moral、Maria del Rosario Rico Ferreira、José Ignacio Candela Lena、Siméon Arseniyadis
DOI:10.1016/s0957-4166(99)00062-2
日期:1999.2
A synthesis and characterization of conveniently functionalized taxoidC-ring building blocks to be used in an A+C approach is presented. Subsequently, a four-step entry to the tricyclic taxoid ABC skeleton, which allows for a high degree of convergency and is highlighted by a stannylene-mediated coupling to link the left- and right-half moieties, followed by an intramolecular aldol reaction to effect