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王锋鹏
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期刊论文
INTERCONVERSION OF HETIDINE- AND ATISINE-TYPE DI TERPENOI D ALKALOIDS: FACILE CLEAVAGE AND REGENERATION OF THE C(14)-C(20) BOND
Tetrahedron Vol. 42, No,I, pp. 26S to 271, 1986 Printed in Great Britain.，-0001，（）：
The simultaneous presence of 2a-hydroxy and 13-keto groups in hetidine (1) gives rise to a facile conversion to a structure (24) of the atisine-type simply by heating in alkaline media, the transient formation of the intermediate (23) as the result of C(14)-C(20) cleavage being captured intramolecularly by the 2a-hydroxy group. Reversion of 24 to 1 can be simply effected by treatment with acid. Included herewith are also some miscarried prior probings leading to the formation of other products.
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