Total Synthesis of (+)-Paniculide A via a Catalytic Asymmetric Diels–Alder Reaction of a 3-Borylpropenoic Acid Derivative
作者:Ichiro Yamamoto、Koichi Narasaka
DOI:10.1246/bcsj.67.3327
日期:1994.12
sesquiterpene, has been synthesized enantioselectively starting from a cycloadduct, which was prepared from 3-(3-borylpropenoyl)-1,3-oxazolidin-2-one and 1-acetoxy-3-methyl-1,3-butadiene by a catalytic asymmetric Diels–Alder reaction.
(+)-Paniculide A 是一种高度氧化的倍半萜烯,由 3-(3-borylpropenoyl)-1,3-oxazolidin-2-one 和 1-acetoxy-3-methyl 制备的环加合物对映选择性合成-1,3-丁二烯通过催化不对称 Diels-Alder 反应。
chiral total synthesis of paniculide A (1), a highly oxygenated sesquiterpene possessing a bisabolane skeleton, starting fromD-glucose is described. The two different approaches, both involved Ferrier's carbocyclization reaction to construct the cyclohexane unit in 1, were explored. The first approach, employing the carbocyclization of bicyclic substrate furnished the formal total synthesis. The second