申请人:Richter Gedeon Vegyeszeti Gyar Rt.
公开号:US04288432A1
公开(公告)日:1981-09-08
The invention relates to novel enkephalin analoge of the general formula I H.sub.2 N-C(NH)-Tyr-A-Gly-Phe-B (I) wherein Tyr, Gly and Phe stand for an L-tyrosine, glycine and L-phenylalanine residue, resp. A stands for a D-amino acid residue having a lower alkyl group or a lower thioalkyl group as side chain, and B stands for an amino group or an L-proline amide moiety, and their pharmaceutically acceptable salts. These compounds can be prepared from peptides containing terminal amino group corresponding in amino acid sequence by transforming the terminal amino group to guanidino group in a known way and, if desired, by forming a salt with a pharmaceutically acceptable acid. The novel compounds of the general formula I possess valuable morphine-like (enkephalin-like) opiate activities.
本发明涉及一种新型的恩啡肽类似物,其一般式为I H.sub.2 N-C(NH)-Tyr-A-Gly-Phe-B (I),其中Tyr、Gly和Phe分别代表L-酪氨酸、甘氨酸和L-苯丙氨酸残基,A代表具有较低烷基或较低硫代烷基侧链的D-氨基酸残基,B代表氨基或L-脯氨酰胺基团,以及其药学上可接受的盐。这些化合物可以通过含有末端氨基的肽转化末端氨基到胍基的方式制备,并且如果需要,可以与药学上可接受的酸形成盐。一般式I的新化合物具有有价值的类似吗啡(恩啡肽类似物)的麻醉活性。