申请人:Union Chimique Continentale U.C.C.
公开号:US04163799A1
公开(公告)日:1979-08-07
Tetrahydro-.alpha.-pyrones and their intermediate salts of 5-hydroxy-2,3-diphenyl hexanoic acid have psychostimulant activity. A process for the preparation of these compounds comprises preparing the alkyl ester of a 5-oxo alkanoic acid from a 4-oxo alkane carbonitrile, obtained in a first stage by the action of benzyl cyanide on the corresponding alkenone, and then saponifying the obtained ester, followed by hydrogenation to form the 5-hydroxy-2,3-diphenyl hexanoic acid salt, followed if desired by cyclization to form the tetrahydro-.alpha.-pyrone.
四氢-α-吡喃酮及其5-羟基-2,3-二苯基己酸的中间盐具有精神兴奋剂活性。制备这些化合物的方法包括从4-氧代烷基腈制备5-氧代烷酸的烷基酯,该烷基酯是在第一阶段通过苯甲腈对应的烯酮作用得到的,然后皂化所得酯,接着还原形成5-羟基-2,3-二苯基己酸盐,如果需要则进行环化,形成四氢-α-吡喃酮。