Mifepristone (RU-486), the recently developed antiprogesterone drug and its analogues

B G Hazra, V S Pore

Abstract


A new synthesis of 2 , 2 - dimethyl - 12 - [ 3 - methylbut - 2 - enyl ] - 2H , 6H - pyrano [ 3 , 2 - b ] xanthen - 6 - one (7) is described from 1 , 3 - dihydroxyxanthone and involved the preparation of a linear dihydropyranoxanthone (26), its conversion into the pyranoxanthone (14) and its prenylated derivative (31) followed by a Claisen rearragement leading to the target substrate (7).

Keywords


Mifepristone; RU-486; antiprogesterone; antiglucocorticoid; anticancer; abortifacient.

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