Efficient asymmetric syntheses of naturally occurring lignan lactones using catalytic asymmetric hydrogenation as a key reaction
作者:Toshiaki Morimoto、Mitsuo Chiba、Kazuo Achiwa
DOI:10.1016/s0040-4020(01)80536-6
日期:1993.2
using the catalytic asymmetric hydrogenation of arylidenesuccinic acid monoesters with a rhodium(I) complex of a chiral bisphosphine, (4S,5S)-MOD-DIOP. Asymmetric total syntheses of some naturally occurring lignans, (+)-collinusin, (−)-deoxypodophyllotoxin, and (+)-neoisostegane, were achieved via several steps from (R)-γ-butyrolactones as key intermediates obtained by the reduction of (R)-arylmethylsuccinic
通过使用具有手性双膦(4 S,5 S)-MOD-DIOP的铑(I)配合物的芳基琥珀酸单酯催化不对称加氢反应,可以高效地获得光学纯的(R)-芳基甲基琥珀酸单甲酯。一些天然存在的木酚素的不对称全合成,(+) - collinusin,( - ) -脱氧,和(+) - neoisostegane,分别实现通过几个步骤从(- [R)-γ丁内酯,如通过还原得到关键中间体(R)-芳基甲基琥珀酸单甲酯。