申请人:Chemex Pharmaceuticals, Inc.
公开号:US04562298A1
公开(公告)日:1985-12-31
A process for producing novel compositions including optically active molecules of nordihydroguaiaretic acid (d,1-2,3-dimethyl,1,4-bis(3,4-dihydroxyphenyl)butane) and intermediates, starting with 1,4-bis(3,4-dimethoxyphenyl)butanone, or other structurally similar composition having oxy substituents at the 3,4-phenyl positions, comprising (1) forming the corresponding butanol; (20) forming the corresponding 1,4-butane ether or siloxy composition; (3) cleaving the oxy substituent from the butane chain at the 1 and 4 positions; (4) dealkylating the phenols at the 3,4 positions to leave hydroxy substituents with hydrobromic acid reflux for 8 to 10 hours. Optical orientation is preserved throughout.
一种生产新型组合物的方法,包括光学活性分子的诺迪氢瓜亚酸(d,1-2,3-二甲基,1,4-双(3,4-二羟基苯基)丁烷)和中间体,从1,4-双(3,4-二甲氧基苯基)丁酮或在3,4-苯基位置具有氧代取代基的其他结构类似物开始,包括(1)形成相应的丁醇;(2)形成相应的1,4-丁基醚或硅氧烷组合物;(3)在1和4位置从丁烷链中割开氧代取代基;(4)通过氢溴酸回流去烷基化3,4位置的酚,以留下羟基取代基。光学方向始终保持不变。