Stereospecific synthesis of endo-endo-3,7-dioxabicyclo[3.3.0]octane lignans using 1,6-bis(dipropylboryl)-2,4-hexadiene
作者:A. N. Anfimov、S. Yu. Erdyakov、M. E. Gurskii、Yu. N. Bubnov
DOI:10.1007/s11172-011-0358-6
日期:2011.11
7-dioxabicyclo[3.3.0]octane series was developed. The strategy includes allylboration of aromatic aldehydes with 1,6-bis(dialkylboryl)-2,4-hexadiene, ozonolysis of the thus obtained 1,4-diaryl-2,3-divinyl-1,4-diols, and subsequent intramolecular cyclization. This methodology was used for obtaining the naturally occurring lignans of the furofuran series, viz., diaeudesmin, diayangambin, epiasarinin, epieudesmin
开发了立体选择性合成 2,6-二芳基-3,7-二氧杂双环 [3.3.0] 辛烷系列化合物的通用方法。该策略包括芳醛与 1,6-双(二烷基硼基)-2,4-己二烯的烯丙基硼化,由此获得的 1,4-二芳基-2,3-二乙烯基-1,4-二醇的臭氧分解,以及随后的分子内环化. 该方法用于获得呋喃系列天然存在的木脂素,即diaeudesmin、diayangambin、epiasarinin、epieudesmin、epiyangambin和asarinin。