本文报道了奥沙拉嗪钠 API 合成过程中硝基还原过程中形成的杂质,后来为开发甲磺酸三卡因的短而高效的生产工艺而进行了探索。该合成的亮点是,在硝基还原过程中,发生脱氧反应,形成三卡因核心,而留下的甲磺氧基作为抗衡阴离子,一步形成甲磺酸三卡因。这里报道的方法避免了分离游离碱和单独的盐形成步骤的需要,因此更加经济和有效。
本文报道了奥沙拉嗪钠 API 合成过程中硝基还原过程中形成的杂质,后来为开发甲磺酸三卡因的短而高效的生产工艺而进行了探索。该合成的亮点是,在硝基还原过程中,发生脱氧反应,形成三卡因核心,而留下的甲磺氧基作为抗衡阴离子,一步形成甲磺酸三卡因。这里报道的方法避免了分离游离碱和单独的盐形成步骤的需要,因此更加经济和有效。
Use of 3,3'-azo-bis-(6-hydroxy benzoic acid) as a drug and
申请人:Pharmacia AB
公开号:US04559330A1
公开(公告)日:1985-12-17
A method of treating inflammatory diseases such as ulcerous colitis, comprising administration of 3,3'-azo-bis-(6-hydroxy benzoic acid) of the formula: ##STR1## or pharmaceutically acceptable salts thereof. Pharmaceutical compositions, especially for oral administration, contain said compound, or pharmaceutically acceptable salts thereof, together with pharmaceutically acceptable carriers and/or adjuvants.
The present invention relates to novel pyrimidine class of compounds, their pharmaceutically acceptable salts, and pharmaceutically acceptable compositions containing them and their use in medicine.
本发明涉及新型嘧啶类化合物,其药用盐和药用组合物,以及包含它们的药用用途。
A method and intermediates for preparing 3,3'-azo-bis-(6-hydroxy benzoic acid)
申请人:PHARMACIA AB
公开号:EP0036636B1
公开(公告)日:1984-02-15
Use of 3,3'-azo-bis-(6-hydroxy benzoic acid) as a drug and pharmaceutical compositions containing the same