Studies toward a synthesis of trilobatin B, a lignan from the liverwort Bazzania trilobata: asymmetric construction of the tetrahydrofuran segment
作者:Hidemi Yoda、Yuka Nakaseko、Kunihiko Takabe
DOI:10.1016/j.tetlet.2004.04.025
日期:2004.5
A novel and stereocontrolled process is described for the asymmetric synthesis of the tetrahydrofuran segment of a 2,3-dicarboxy-6,7-dihydroxy-1-(3′,4′-dihydroxyphenyl)-1,2- dihydronaphthalene mono-ester, trilobatin B, a lignan from the liverwort Bazzania trilobata. The key cis-substituted lactone ring was constructed in a stereoselective manner by Horner–Emmons reaction followed by the subsequent
描述了一种新的立体控制方法,用于不对称合成2,3-二羧基-6,7-二羟基-1-(3',4'-二羟基苯基)-1,2-二氢萘单酯的四氢呋喃链段, trilobatin B,一种来自地榆植物Bazzania trilobata的木脂素。关键的顺式取代的内酯环是通过Horner-Emmons反应以立体选择性的方式构建的,然后依次串联迈克尔加成反应和环化两种由天然来源制得的内酯中间体。