Structural modification of bioactive compounds. I. Syntheses of vitamin D analogues I.
作者:KATSUHIDE MATOBA、KAKUYA KONDO、TAKAO YAMAZAKI
DOI:10.1248/cpb.32.1416
日期:——
Three vitamin D analogues, (25R)-9, 10-seco-spirosta-5, 7, 10 (19)-trien-3β-ol (I), 17β (N-methyl-N-4-methylpentylamino)-9, 10-seco-androsta-5, 7, 10 (19)-trien-3β-ol (II), and (20S)-20-iso-pentylamino-9, 10-seco-pregna-5, 7, 10 (19)-trien-3β-ol (III), were prepared starting from diosgenin (IVa), 3β-hydroxy-5-androsten-17-one (Va), and 3β-hydroxy-5-pregnen-20-one (VIa), respectively, via the adducts of the corresponding 5, 7-dienes and 4-phenyl-1, 2, 4-triazoline-3, 5-dione.
三种维生素D类似物,即(25R)-9,10-开环-螺甾-5,7,10(19)-三烯-3β-醇(I)、17β(N-甲基-N-4-甲基戊胺)-9,10-开环-雄甾-5,7,10(19)-三烯-3β-醇(II)和(20S)-20-异戊胺-9,10-开环-孕甾-5,7,10(19)-三烯-3β-醇(III),分别由薯蓣皂苷元(IVa)、3β-羟基-5-雄烯-17-酮(Va)和3β-羟基-5-孕烯-20-酮(VIa)出发,通过相应的5,7-二烯与4-苯基-1,2,4-三唑啉-3,5-二酮的加成物制备得到。