作者:Jian Liang、David W. Hoard、Vien Van Khau、Michael J. Martinelli、Eric D. Moher、Richard E. Moore、Marcus A. Tius
DOI:10.1021/jo9815958
日期:1999.3.1
cryptophycins from (S)-trans-3-penten-2-ol and from (S)-trans-4-hexen-3-ol has been completed. The key stereodetermining step is a [2,3]-Wittig rearrangement of a propargyl ether. Elaboration of the rearrangement product was accomplished by means of a selective hydroboration-oxidation of a terminal alkyne, Horner-Emmons homologation of the derived aldehyde, followed by selective ozonolytic cleavage and Wittig
由(S)-反-3-戊烯-2-醇和(S)-反-4-己烯-3-醇合成隐霉素的单元A已经完成。关键的立体确定步骤是炔丙基醚的[2,3] -Wittig重排。通过末端炔烃的选择性氢硼化-氧化,衍生的醛的霍纳-埃蒙斯同源化,然后选择性的臭氧分解和Wittig烯烃化来完成重排产物的加工。通过这种合成,可以轻松获得一系列在单位A中结合了修饰的芳环的隐藻霉素类似物。