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A toxic diterpenoid diester and a monoester were isolated from the fruits of Aleurites fordii. The structure of the monoester was found to be 13-O-acetyl-16-hydroxyphorbol by transforming it into bisdehydrophorbol-(12,20)-diacetate. The structure of the toxic constituent was established as 12-O-palmityl-13-O-acetyl-16-hydroxyphorbol by partial synthesis from the monoester. 相似文献