The present invention relates to a novel and efficient process for the preparation of 8-hydroxybicyclo[7.3.1]tridec-4-ene-2,6-diyne ring system which is part of the aglycone of esperemicin and to novel cytotoxic antitumor agents having said bicyclic ring system. The present invention also provides a method for treating mammalian malignant tumors by administering to an animal in need of such treatment an antitumor effective amount of a compound of the present invention.
本发明涉及一种新颖高效的方法,用于制备8-羟基双环[7.3.1]十
三烯-4-炔-2,6-二炔环系统,该环系统是埃斯佩雷霉素的无糖基部分,并且涉及具有该双环环系统的新型细胞毒
抗肿瘤药物。本发明还提供了一种治疗哺乳动物恶性肿瘤的方法,即通过向需要此类治疗的动物投与本发明化合物的抗肿瘤有效量。