A stereospecific rearrangement of a series of 1,2-cis-diol monotosylates is described. The 5-hydroxy-6-tosyloxy derivatives, 2, lead to the A-homo-B-norketones 3 and 4 and the 5-hydroxy-4-tosyloxy derivatives 11, 12 and 28 to the A-nor-B-homoketones 13, 14 and 29. Rearrangement of 3-acetoxy-5-hydroxy-4-tosyloxy derivatives 31 however, results in the 3-aldehydo-A-nor-steroids 32.
描述了一系列1,2-顺式
-二醇单
甲苯磺酸酯的立体有规重排。5-羟基-6-
甲苯磺酰氧基衍
生物2导致A-均-B-甲酮3和4,而5-羟基-4-
甲苯磺酰氧基衍
生物11、12和28导致A-nor-B-甲酮13 ,14和29。然而,3-乙酰氧基-5-羟基-4-
甲苯磺酰氧基衍
生物31的重排导致3-醛-A-去甲甾体32。