Indole Diterpene Synthetic Studies. Total Synthesis of (+)-Nodulisporic Acid F and Construction of the Heptacyclic Cores of (+)-Nodulisporic Acids A and B and (−)-Nodulisporic Acid D
作者:Amos B. Smith、Akin H. Davulcu、Young Shin Cho、Kazuyuki Ohmoto、László Kürti、Haruaki Ishiyama
DOI:10.1021/jo062422i
日期:2007.6.1
eastern and western hemisphere subtargets via the indole synthesis protocol developed in our laboratory. Subsequent elaboration of rings E and F, however, revealed the considerable acid instability of the C(24) hydroxyl, thereby preventing further advancement. Nonetheless, preparation of the heptacyclic core of (+)-nodulisporic acids A and B, the total synthesis of (+)-nodulisporic acid F, the simplest member
描述了构建(+)-去甲孢酸A(1)和B(2)的第一代策略。该策略需要通过我们实验室开发的吲哚合成方案将东半球和西半球的子目标联合起来。然而,随后对环E和F的修饰揭示了C(24)羟基的明显酸不稳定性,从而阻止了进一步的发展。然而,制备(+)-瘤孢子酸A和B的七环核,(+)-瘤孢子酸F的全合成,瘤孢子酸家族的最简单成员,以及(-)-的七环核的精细化获得了根瘤菌酸D。