A novel synthesis of brassinolide and related compounds
作者:Zhou Wei-Shan、Biao Jiang、Xin-fu Pan
DOI:10.1039/c39890000612
日期:——
A stereoselective synthesis of the natural promoting steroids, brassinolide, homobrassinolide, and typhasterol is described, which involves construction of a side chain by lactonisation of Z-(5) under acidic conditions to give an α,β-unsaturated δ-lactone (6) with the inversion of the configuration at C-22 of the epoxy steroid in quantitative yield.