2-Dimethylaminomethylestrone (Ia) and the 4-isomer (IIa) were obtained from the Mannich product of estrone. Methiodides of I'a-c and II'a-c were treated with alcoholic alkali to give 2-and 4-alkoxymethylestrogens in good yields. Methylation in the usual manner of I and II failed, but reaction of I and II with dimethylsulfate in a boiling methanolic alkali gave the 3-methyl ethers of 2-and 4-methoxymethylestrogens, respectively. The structural assignments of the isomers were discussed based on nuclear magnetic resonance, infrared and ultraviolet spectra.
2-
二甲氨基甲基
雌酮 (Ia) 和其4-异构体 (IIa) 通过
雌酮的曼尼希产物获得。I'a-c 和 II'a-c 的
碘甲基化衍
生物与醇性碱反应,良好产率地得到了2-和4-烷氧基甲基
雌激素。对I和II的常规甲基化反应未成功,但I和II与
二甲基硫酸酯在沸腾的
甲醇碱中反应,分别得到了2-和4-甲氧基甲基
雌激素的3-甲基醚。根据核磁共振、红外和紫外光谱,讨论了这些异构体的结构指派。