A Novel, Versatile D→BCD Steroid Construction Strategy, Illustrated by the Enantioselective Total Synthesis of Estrone
作者:Vincent Foucher、Benedetta Guizzardi、Marinus B. Groen、Mark Light、Bruno Linclau
DOI:10.1021/ol902638w
日期:2010.2.19
general steroid synthesis is presented that relies on prior formation of three stereogenic centers (C8, C13, and C14) on a D ring template, followed by C- and B-ring cyclizations. The assembly of the key D ring template, achieved by a 3-component conjugate addition/alkylation process, allows introduction of structural variety as required. The method is illustrated by the totalsynthesis of estrone via