The biological activities of diethylstilbestrol and its derivatives.
作者:YOSHIHIKO INAMORI、MAYURI KUBO、MASAFUMI OGAWA、MASAMITSU MORIWAKI、HIROSHI TSUJIBO、KIMIYE BABA、MITSUGI KOZAWA
DOI:10.1248/cpb.33.4478
日期:——
Diethylstilbestol (I), a nonsteroidal estrogen, showed strong coronary vasodilator action on isolated guinea-pig heart, as well as ichthyotoxicity and antimicrobial activity. First, the coronary vasodilator action of I (ED50 : 0.26μg/heart) on isolated guinea-pig heart was much stronger than that of papaverine (ED50 : 7.0μg/heart) used as a standard. On the other hand, the activities of derivatives of I, i. e., I-diphosphate (II), I-dimethyl ether (III), I-diacetate (IV), I-dipropionate (V) and hexestrol (VI) were weaker than that of I. Second, I showed strong ichthyotoxicity (median tolerance limit at 48h : 3.30 ppm in Oryzias latipes and 4.50 ppm in Carassius auratus). On the other hand, the ichthyotoxic activities of II-V were weaker than that of I. However, VI showed the same toxicity as I on both fishes. Third, the antimicrobial activities of II-V were weaker than that of I, whereas that of VI was stronger. In particular, I and VI showed strong antifungal activity against Trichophyton spp. It was concluded that both the hydroxyl groups attached to the benzene rings and the transolefin structure are necessary for coronary vasodilator action, while only the hydroxyl groups attached to the benzene ring are necessary for the ichthyotoxic and antimicrobial activities.
二乙基芪雌醇(I)是一种非甾体雌激素,对离体豚鼠心脏具有很强的冠状动脉血管扩张作用,同时还具有鱼毒性和抗菌活性。首先,I(ED50:0.26 微克/心)对离体豚鼠心脏的冠状血管扩张作用远强于作为标准的木蝴蝶碱(ED50:7.0 微克/心)。另一方面,I 的衍生物,即 I-二磷酸酯(II)、I-二甲醚(III)、I-二乙酸酯(IV)、I-二丙酸酯(V)和己烯雌酚(VI)的活性均弱于 I。另一方面,II-V 的鱼毒活性比 I 弱,但 VI 对两种鱼类的毒性与 I 相同。第三,II-V 的抗菌活性弱于 I,而 VI 则更强。得出的结论是,苯环上的羟基和反异亮氨酸结构都是冠状血管扩张作用所必需的,而只有苯环上的羟基才是鱼毒和抗菌活性所必需的。