申请人:Chemex Pharmaceuticals, Inc.
公开号:US04954659A1
公开(公告)日:1990-09-04
A grignard synthesis of pharmacologically active 1,4-bis(dihydroxyphenyl)butane and analogs, as well as novel intermediates, is provided, comprising preparing a grignard reagent preferably, a 3,4-dialkoxyphenyl propyl magnesium bromide, which may be reacted with carbonyl compounds to form intermediates of desired end products, said carbonyl compounds preferably being 3,4-dialkoxybenzaldehydes. The resulting alcohol is converted to a corresponding ether or siloxy compound, at the carbonyl site. The oxy-substituent is cleaved off; and the benzene ring or rings dealkylated to leave hydroxy substituents on the rings.
提供一种制备药理活性1,4-双(二羟基苯基)丁烷及类似物的格氏试剂合成方法,还包括制备格氏试剂,最好是3,4-二烷氧基苯基丙基镁溴化物,该试剂可以与羰基化合物反应,形成所需终产物的中间体,所述羰基化合物最好是3,4-二烷氧基苯甲醛。生成的醇转化为相应的醚或硅氧化合物,在羰基位置。氧取代基被切除;苯环或环被去烷基化,留下环上的羟基取代基。