申请人:Pfizer Inc.
公开号:US04011231A1
公开(公告)日:1977-03-08
The maleic acid salt of 2-phenyl-6-(1-hydroxy-2-t-butylaminoethyl)-4H-pyrido[3,2-d]-1,3-dioxin, its preparation and use as an intermediate for making 2-hydroxymethyl-3-hydroxy-6-(1-hydroxy-2-t-butylaminoethyl)pyridine, an effective bronchodilator.
2-苯基-6-(1-羟基-2-t-叔丁基氨基乙基)-4H-吡啶[3,2-d]-1,3-二噁烷的马来酸盐、其制备和用作制备2-羟甲基-3-羟基-6-(1-羟基-2-t-叔丁基氨基乙基)吡啶,一种有效的支气管扩张剂的中间体。