申请人:——
公开号:US04281120A1
公开(公告)日:1981-07-28
Derivatives of 7H-1,3,4-thiadiazolo-[3,2-a]-pyrimidin-7-one-5-carboxylic acid having basic substituents in the 2-position, the alkyl esters and/or pharmaceutically useable salts of these compounds are new substances having immunstimulating properties, being especially valuable for antiinfectious therapy in mammals including man. The new products are prepared by reacting 2-amino-5-(basically substituted)-1,3,4-thiadiazoles with dialkylacetylenedicarboxylates and splitting the ester grouping in the obtained compound if desired and/or forming pharmaceutically acceptable salts.
7H-1,3,4-噻二唑并[3,2-a]-嘧啶-7-酮-5-羧酸的衍生物,在2位具有碱性取代基,这些化合物的烷基酯和/或药用可用盐是具有免疫刺激性质的新物质,特别适用于哺乳动物包括人类的抗感染疗法。新产品是通过将2-氨基-5-(碱性取代)-1,3,4-噻二唑与二烷基基乙炔二羧酸酯反应,并在所得化合物中分裂酯基团(如果需要)和/或形成药学上可接受的盐来制备的。