New Asymmetric Syntheses of (-)-Isoiridomyrmecn and (+)-Loganin Aglucon 6-Acetate Utilizing C2-Symmetric Dimethyl 3,7-Dihydroxy-cis-bicyclo[3.3.0]octa-2,6-diene-2,6-dicarboxylate.
作者:Manabu NODE、Mamoru ARAKI、Hiroaki TANAKA、Daisaku NAKAMURA、Takehisa INOUE、Kiyoharu NISHIDE
DOI:10.1248/cpb.46.736
日期:——
The first asymmetric synthesis of (-)-isoiridomyrmecin and formal synthesis of (-)-loganin were done using chiral C2-symmetric building block dimethyl 3, 7-dihydroxy-cis-bicyclo[3.3.0]octa-2, 6-diene-2, 6-dicarboxylate (2) which was prepared by the lipase-catalyzed asymmetric demethoxy-carbonylation of tetramethyl 3, 7-dioxo-cis-bicyclo-[3.3.0]octane-2, 4, 6, 8-tetracarboxyrate (1).
(-)-异伊里多霉素的首次不对称合成和(-)-洛根素的首次全合成均使用手性C2对称结构单元3,7-二羟基-顺式-双环[3.3.0]辛烷-2,6-二烯-2,6-二羧酸二甲酯(2)进行,该结构单元由四甲基3,7-二氧代-顺式-双环-[3.3.0]辛烷-2,4,6,8-四羧酸(1)经脂肪酶催化不对称脱甲氧基羰基化反应制备而成。