申请人:Fujisawa Pharmaceutical Co. Ltd.
公开号:US05284828A1
公开(公告)日:1994-02-08
Novel peptides of the formula (I") ##STR1## in which R.sup.1 is hydrogen or acyl, R.sup.2.sub.c is lower alkyl, R.sup.3.sub.c is optionally N-substituted indolylmethyl, R.sup.4 is hydrogen, lower alkyl, C.sub.6-10 ar(lower)alkyl, amino(lower)alkyl, protected amino (lower)alkyl, carboxy(lower)alkyl, protected carboxy(lower)alkyl or optionally substituted heterocyclic (lower)alkyl, R.sup.5 is carboxy, protected carboxy, carboxy(lower)alkyl or protected carboxy(lower)alkyl, R.sup.7 is hydrogen or lower alkyl, and A is --O--, --NH--, lower alkylamino or lower alkylene, or a pharmaceutically acceptable salt thereof are disclosed. Additionally, the preparation of such peptides is described. The peptides are used to treat endothelin mediated diseases such as hypertension.
公开了具有以下结构的新型肽(I")##STR1##其中R.sup.1是氢或酰基,R.sup.2.sub.c是较低的烷基,R.sup.3.sub.c是可选的N-取代吲哚甲基,R.sup.4是氢,较低的烷基,C.sub.6-10 ar(lower)alkyl,氨基(较低)烷基,受保护的氨基(较低)烷基,羧基(较低)烷基,受保护的羧基(较低)烷基,或者可选地取代的杂环(较低)烷基,R.sup.5是羧基,受保护的羧基,羧基(较低)烷基或受保护的羧基(较低)烷基,R.sup.7是氢或较低的烷基,A是--O--,--NH--,较低的烷基氨基或较低的亚烷基,或其药用可接受盐。此外,描述了这类肽的制备方法。这些肽被用于治疗由内皮素介导的疾病,如高血压。