申请人:Zaidan Hojin Biseibutsu Kagaku Kenkyukai
公开号:US05756763A1
公开(公告)日:1998-05-26
The invention relates to novel pyrrolidine derivatives represented by formula (1): ##STR1## wherein: R1 represents (1) a lower alkyl group having 1 to 6 carbon atoms, or (2) a 3- to 15-membered mono- or fused cyclic hydrocarbon group which may contain a hetero atom on the ring, or which may be substituted with a substituent(s); each of n and m represents an integer and the sum of n and m is an integer of 0 to 2; each of X and E represents oxygen, NR' (wherein R' is hydrogen or a lower alkyl group having 1 to 6 carbon atoms), sulfur, phenylene, CH.dbd.CH or CH.sub.2 ; A represents an amino acid residue or an imino acid residue, which functional group may be optionally protected, or a glycine residue which may be substituted at the amino moiety thereof; and, Y1 represents a cycloalkyl group having 3 to 8 carbon atoms; or a salt thereof. The pyrrolidine derivatives inhibit a prolyl endopeptidase and are expected to be effective for the treatment of amnesia.
该发明涉及由式(1)表示的新型吡咯烷衍生物:
其中:R1代表(1)具有1至6个碳原子的低碳基,或(2)具有3至15个成员的单环或融合环烃基,该基可能在环上含有杂原子,或者可能被取代基取代;n和m各自代表整数,n和m的和为0至2的整数;X和E各自代表氧、NR'(其中R'是氢或具有1至6个碳原子的低碳基)、硫、苯基、CH.dbd.CH或CH.sub.2;A代表氨基酸残基或亚氨基酸残基,其功能基团可以选择性地被保护,或者是甘氨酸残基,其氨基团可能被取代;Y1代表具有3至8个碳原子的环烷基;或其盐。这些吡咯烷衍生物抑制脯氨酸内切酶,预计对失忆症的治疗具有有效性。