aldehydes under the conditions of the Schmidt reaction were examined. The 16β-azidomethyl,17β-hydroxy isomer resulted in 5,6-dihydro-4H-1,3-oxazine fused to the estrane skeleton. This method allowed preparation of the 5,6-dihydro-4H-1,3-oxazine condensed to positions 16α,17α of the estrone. the isomeric (2R)5,6-dihydro-2H-1,3-oxazine also being formed stereoselectively.
检查了在施密特反应条件下顺式-16-
叠氮甲基,17-羟基
雌酮衍
生物与一系列醛的反应。16β-
叠氮甲基,17β-羟基异构体产生与
雌酮骨架融合的 5,6-二氢-4H-1,3-恶嗪。该方法允许制备缩合到
雌酮的 16α,17α 位置的 5,6-二氢-4H-1,3-恶嗪。异构的 (2R)5,6-二氢-
2H-1,3-恶嗪也立体选择性地形成。