Full details of an enantioselective total synthesis of 8-O-4'-neolignan perseal B are presented for the first time. The synthesis was achieved in 8 steps from vanillin and involved the asymmetric dihydroxylation reaction using AD-mix-\alpha to give the key intermedium (1S,2S)-1-(4-(benzyloxy)-3-methoxyphenyl)propane-1,2,3- triol, and the Mitsunobu reaction between phenylpropanoid and vanillin formed perseal B. The synthetic method of perseal B exhibits a new route for 8-O-4'-neolignan.
本研究首次介绍了 8-O-4'-neolignan perseal B 对映体选择性全合成的全部细节。 该合成以
香兰素为原料,通过 8 个步骤实现,其中包括使用 AD-mix-\alpha 进行不对称二羟基化反应,得到关键中间体 (1S,2S)-1-(4-(苄氧基)-3-
甲氧基苯基)
丙烷-1,2,3-三醇,
苯丙氨酯与
香兰素之间的 Mitsunobu 反应生成perseal B。