Efficient Total Synthesis of Racemic Bisabolane Sesquiterpenes Curcuphenol and Xanthorrhizol Starting from Substituted Acetophenones
作者:Luisa E. Montiel、L. Gerardo Zepeda、Joaquín Tamariz
DOI:10.1002/hlca.201000111
日期:——
A total synthesis of natural bisabolane sesquiterpenes curcuphenol (1) and xanthorrhizol (2) was developed by using the substituted acetophenones 4 and 5, respectively, as starting materials. The acetyl group of the latter was activated through ethoxycarbonylation to carry out the prenylation, which was performed successfully to give their respective precursors 11a and 11b, and 21 that were converted
天然bisabolane倍半萜curcuphenol(的总合成1)和xanthorrhizol(2)通过使用取代的苯乙酮开发4和5分别作为起始原料。后者的乙酰基通过乙氧羰基化反应进行异戊烯化,成功进行了异戊烯化,得到了各自的前体11a和11b和21,它们分别通过四个步骤和步骤分别转化为相应的天然倍半萜1和2。高总产量。