Synthesis of pachastrissamine (jaspine B) and its derivatives by the late-stage introduction of the C-2 alkyl side-chains using olefin cross metathesis
作者:Yuji Yoshimitsu、Jun Miyagaki、Shinya Oishi、Nobutaka Fujii、Hiroaki Ohno
DOI:10.1016/j.tet.2013.03.091
日期:2013.5
An improved divergent synthesis of the four diastereomers of pachastrissamine from Garner's aldehyde has been reported. The common intermediate was synthesized by an indium-mediated acetoxyallylation reaction. The long alkyl side chain was introduced in the late stage of the synthesis using an olefin cross metathesis reaction. Biological evaluation of the chain modified analogs of the (2S,3S,4R)-isomer
据报道,从加纳的醛中合成了四种帕斯帕司胺的非对映异构体的改进的发散性合成。常见的中间体是通过铟介导的乙酰氧基烯化反应合成的。在合成的后期,使用烯烃交叉复分解反应引入长烷基侧链。(2 S,3 S,4 R)-异构体的链修饰类似物的生物学评估表明,生物活性高度依赖于链长。