Synthesis of (.+-.)-Dibenzocyclooctadiene Lignans, (.+-. )-Schizandrin, (.+-.)-Gomisin A and Their Stereoisomers, Utilizing the Samarium-Grignard Reaction.
作者:Tetsuya TAKEYA、Akira OHGUCHI、Yoshiaki ARA、Seisho TOBINAGA
DOI:10.1248/cpb.42.430
日期:——
Several (±)-dibenzocyclooctadiene lignans, (±)-schizandrin (1a) (±)-gomisin A (1b), and their stereoisomers 2a and 2b, were synthesized by the samarium-Grignard reaction of the phenylpropyl bromides 4 and the phenylacetone derivative 5 to give the erythro and threo-butanols 6 and 7 followed by oxidative aryl-aryl coupling reaction of each butanol.
通过苯丙基溴化物4和苯丙酮衍生物5的钐-格氏反应,合成了多种(±)-二苯并环辛二烯木脂素、(±)-五味子醇甲(1a)、(±)-五味子素 A(1b)及其立体异构体 2a 和 2b,得到赤式和顺式-丁醇 6 和 7,然后对每种丁醇进行氧化芳基-芳基偶联反应。