Neurosteroid analogues: synthesis of 6-aza-allopregnanolone
作者:Alexander Kasal、Libor Matyáš、Miloš Buděšínský
DOI:10.1016/j.tet.2005.01.055
日期:2005.2
An efficient synthesis of 6-azapregnane derivatives and their biological activity is described. The nitrogen was introduced into the B ring using Beckmann rearrangement of the (E)-oxime of 6-oxo-B-nor-5α-pregnane derivatives. The required 3α-hydroxyl was produced either by solvolysis of the corresponding 3β-mesyloxy group or by the Meerwein–Ponndorf–Verley reduction of the 3-oxo group; this reduction