Highly stereoselective elongation of a functionalized E isoprene unit on the Z terminal methyl of prenol was achieved by the N-ylide rearrangement of N-tiglyl-β-methallyldimethyl ammonium salt. (E,Z)-Rearrangement product was converted into 13-cis-retinol via useful conjugated triene isoprenoid synthon.
通过 N-tiglyl-β-甲基烯丙基二甲基
铵盐的 N-ylide 重排实现了
异戊二烯 Z 末端甲基上的官能化 E
异戊二烯单元的高度立体选择性延伸。(E,Z)-重排产物通过有用的共轭
三烯类
异戊二烯合成子转化为 13-顺式-
视黄醇。