Synthetic Transformations of Higher Terpenoids. XXXIII.* Preparation of 15,16-Dihydroisopimaric Acid and Methyl Dihydroisopimarate and their Transformations
作者:Yu. V. Kharitonov、E. E. Shul’ts、M. M. Shakirov
DOI:10.1007/s10600-014-0823-1
日期:2014.1
and its methyl ester. Oxidation of methyl dihydroisopimarate through the action of 3-chloroperbenzoic acid occurred with formation of 7,8-epoxy-derivatives and 7α-hydroxydihydrosandaracopimarate. The latter in addition to 7-oxotetrahydroisopimarate were formed through the action of t-butylhydroperoxide in the presence of MoCl5. Oxidation of dihydroisopimaric acid or the ester by seleniumdioxide in dioxane