1981 年 101 巻 3 号 p. 285-290
2, 3-Dihydroxyestra-1, 3, 5 (10)-triene-6, 17-dione (5) and its methylated derivatives (4, 6, and 7) have been prepared for biological investigation. The preparation method and the results of instrumental analyses including nuclear magnetic resonance and ultraviolet spectra of these materials are described. The additivity rule of the λmax observed in benzocyclanone derivatives was also applicable to the present estra-1, 3, 5 (10)-triene-6, 17-dione skeleton.