申请人:MINISTERO DELL' UNIVERSITA' E DELLA RICERCA SCIENTIFICA E TECNOLOGICA
公开号:EP0357565A2
公开(公告)日:1990-03-07
New process for the synthesis of the levodopa, L-(-)-2-amino-3-(3,4-dihydroxyphenyl)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 methylation, 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(L-(-)-2-氨基-3-(3,4-二羟基苯基)丙酸)的新工艺,用于治疗帕金森病。该工艺包括用 d-樟脑磺酸或其盐溶解从 3,4-二甲氧基苯乙醛中得到的 d,l-2-氨基-3-(3,4-二甲氧基苯基)丙腈,然后用卤酸的浓溶液对 d-2-氨基-3-(3,4-二甲氧基苯基)丙腈及其盐进行水解和甲基化。