— 2-Methoxyestradiol (2ME2), a natural metabolite of estradiol which has no estrogenic activity, is a potent antitumor and
anti-angiogenic compound, currently undergoing clinical trials for treatment of a variety of cancers. In the last two decades, an ever
increasing number of synthetic 2-methoxyestradiol analogues have been reported. Structural changes include A/B/C/D-rings
modification, homologation, aromatization, and introduction of various substituents on C-2 position along with substitution of alkyl and
ethynyl groups for the 17-hydroxy function. In this review, an attempt has been made to compile the structure-activity relationships of
various synthesized 2-methoxyestradiol analogues.
Keywords: — 2-Methoxyestradiol, antiproliferative activity, antimitotic activity, apoptotic activity, antiangiogenesis, anticancer agents, structure-activity relationships, homologation, aromatization, ethynyl groups.
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