Alkenylzinc-Mediated Approach to the Vitamin D Skeleton. Application to the Synthesis of 6-Methyl Analogs of Vitamin and Previtamin D
作者:Ana M. García、José L. Mascareñas、Luis Castedo、Antonio Mouriño
DOI:10.1021/jo970605m
日期:1997.9.1
Palladium-catalyzed cross-coupling of alkenylzine reagents, bearing the C,D-ring/side chain portion, and (Z)-1-iodo-1,3-bis-exocyclic dienes (as A-ring precursors), provides a mild, convergent entry to the vitamin D skeleton, that is suitable for the synthesis of thermally labile derivatives such as those bearing substituents on the triene system.