作者:Takashi Matsumoto、Shoji Takeda
DOI:10.1246/bcsj.52.2611
日期:1979.9
(13) by a series of reactions: Jones oxidation, reduction with a mixture of zinc powder and hydrochloric acid, and acetylation. The diacetate (13) was then oxidized with Jones reagent and the 6,7-dioxo product was immediately converted into 11-acetoxy-6,14-dihydroxy-12-methoxyabieta-5,8,11,13-tetraene (15) by repeated column chromatography on silica gel. The tetraene (15) was finally hydrolyzed wi..
用硼氢化钠还原 11-苯甲酰氧基-12-甲氧基松香-8,11,13-trien-7-one,然后用对甲苯磺酸对所得醇进行脱水,得到相应的 6,8,11,13-四烯衍生物。通过环氧化物将其转化为 11-benzoyloxy-12-methoxyabieta-8,11,13-trien-6-one (8)。6-氧代化合物(8)用氢化铝锂还原。随后用间氯过苯甲酸氧化所得醇,得到 6β-羟基-12-甲氧基松香-8,12-二烯-11,14-二酮。该化合物通过一系列反应进一步转化为 11,14-diacetoxy-12-methoxyabieta-8,11,13-trien-6-one (13):琼斯氧化,用锌粉和盐酸的混合物还原,和乙酰化。然后用琼斯试剂和 6, 通过在硅胶上的重复柱色谱法,7-二氧代产物立即转化为11-乙酰氧基-6,14-二羟基-12-甲氧基松香-5,8,11,13-四烯(15)。四烯(15)最终被水解