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Chemical Structures of Macrocalyx in A and C

作 者 ：Wang Xian-rong, Wang Zhao-quan, Dong Jin-guang and Xue Zhao-wen

Keywords:Rabctosia macrocalyx (Dunn) Hara, Diterpenoid, Macrocalyxin A, Macrocalyxin,

Abstract:Two new diterpenoids which show antibacterial and eytotoxie activities, macrocalyxin A and C have been isolated from the leaves of Rabdosia macrocalyx (Dunn) Hara. Their structures were established as (1) and (4) by spectroscopic and chemical data respectively.

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