申请人:Ministero dell'Universita e delle Ricerca Scientifica e Tecnologica
公开号:US04962223A1
公开(公告)日:1990-10-09
New process for the synthesis of the levodopa, L-(-)-2-amino-3-(3,4-dihydyphenyl)propionic acid, drug used in the treatment of the Parkinson's disease. The process consists in resolving with d-camphorsulfonic acid, or with a salt thereof, the d,l-2-amino-3-(3,4-dimethoxyphenyl)propionitrile, obtained from the 3,4-dimethoxyphenylacetaldehyde, and in the subsequent hydrolysis and demethylation, by means of concentrated solutions of haloid acids, of the d-2-amino-3-(3,4-dimethoxyphenyl)propionitrile and of salts thereof.
合成左旋多巴(一种用于治疗帕金森病的药物)的新工艺。该工艺涉及使用d-藿酸磺酸或其盐来处理从3,4-二甲氧基苯乙醛获得的d,l-2-氨基-3-(3,4-二甲氧基苯基)丙腈,然后通过浓缩的卤酸溶液对d-2-氨基-3-(3,4-二甲氧基苯基)丙腈及其盐进行水解和去甲基化。