Aldol Condensation of Corticoids with Formaldehyde. II. 21-Hydroxymethylation of Reichstein's Substance S, Dexamethasone and Deoxycorticosterone
作者:Shunsaku Noguchi、Fujiko Nakayama、Katsura Morita
DOI:10.1248/cpb.12.1180
日期:——
21-Hydroxymethyl-Reichstein's substance S (III), 21-hydroxymethyldexamethasone (IV ), 21-hydroxymethyldeoxycorticosterone (VI) and 21, 21-bis(hydroxymethyl)deoxycorticosterone (VII) were synthesized by the aldol condensation of the parent steroids with formaldehyde in the presence of sodium acetate. When 21-hydroxymethyl-Reichstein's substance S diacetate (VIII) and 21-hydroxymethyldeoxycorticosterone diacetate (X) were passed through a column of alumina, 21-methyl-17α-hydroxypregn-4-ene-3, 20, 21-trione acetate(IX) and 21-methylpregn-4-ene-3, 20, 21-trione (XI) were obtained. The diketone (XI) underwent further decomposition in the air to give androst-4-ene-3, 17-dione.
21-羟甲基-赖兴斯坦物质S (III)、21-羟甲基地塞米松 (IV)、21-羟甲基去氧皮质酮 (VI) 和21, 21-双(羟甲基)去氧皮质酮 (VII) 是通过母体类固醇与甲醛在醋酸钠存在下进行醇醛缩合反应合成的。当21-羟甲基-赖兴斯坦物质S二醋酸酯 (VIII) 和21-羟甲基去氧皮质酮二醋酸酯 (X) 经过铝土矿柱时,得到了21-甲基-17α-羟基孕-4-烯-3, 20, 21-三酮醋酸酯 (IX) 和21-甲基孕-4-烯-3, 20, 21-三酮 (XI)。二酮 (XI) 在空气中进一步分解,生成雄甾-4-烯-3, 17-二酮。