申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04743614A1
公开(公告)日:1988-05-10
Novel compounds of the following formula have restorative pharmacological activities in immuno-deficient hosts, ##STR1## wherein R.sup.1 is amino or a protected amino group, R.sup.2 is hydrogen, carboxy or a protected carboxy group, R.sup.3 is hydrogen, carboxy or a protected carboxy group, R.sup.4 is lower alkyl, amino(lower)alkyl, protected amino(lower)alkyl, carbamoyl(lower)alkyl or protected carbamoyl(lower)alkyl, R.sup.5 is hydrogen or lower alkyl, and R.sup.6 is hydrogen, hydroxyphenyl(lower)alkyl, imidazolyl(lower)alkyl or indolyl(lower)alkyl.
以下式子的新化合物在免疫缺陷宿主中具有修复药理活性,其中,R1为氨基或保护氨基基团,R2为氢、羧基或保护羧基基团,R3为氢、羧基或保护羧基基团,R4为较低的烷基、氨基(较低)烷基、保护氨基(较低)烷基、氨基甲酰基(较低)烷基或保护氨基甲酰基(较低)烷基,R5为氢或较低的烷基,R6为氢、羟基苯基(较低)烷基、咪唑基(较低)烷基或吲哚基(较低)烷基。