申请人:Beecham Group p.1.c.
公开号:US04447422A1
公开(公告)日:1984-05-08
A compound of formula (I) or a pharmaceutically acceptable salt or in vivo hydrolysable ester thereof: ##STR1## wherein R.sup.1 is phenyl, 4-hydroxy phenyl, 3,4-dihydroxyphenyl, 3,4-diacetoxyphenyl or a 5- or 6- membered heterocyclic ring containing up to three heteroatoms selected from oxygen, sulphur or nitrogen, optionally substituted with hydroxy, amino, halogen or C.sub.1-6 alkoxy; and R.sup.2 is a sub-group of formula (A): --NH--R.sup.3 (A) wherein R.sup.3 is an optionally substituted C.sub.1-10 alkyl or C.sub.3-7 cycloalkyl group; or R.sup.2 is a sub-group of formula (B): --NH--CO--R.sup.4 (B) wherein R.sup.4 is an aryl group, an optionally substituted C.sub.1-10 alkyl group or a C.sub.1-6 alkyloxy group optionally substituted by an aryl group.
式(I)的化合物或其药学上可接受的盐或体内可水解酯:
##STR1##
其中,R.sup.1是苯基、4-羟基苯基、3,4-二羟基苯基、3,4-二乙酰氧基苯基或含有最多三个氧、硫或氮杂原子的5-或6-成员杂环,可选择性地被羟基、氨基、卤素或C.sub.1-6烷氧基取代;R.sup.2是式(A)的亚基:--NH--R.sup.3 (A),其中R.sup.3是可选择性地被取代的C.sub.1-10烷基或C.sub.3-7环烷基;或者R.sup.2是式(B)的亚基:--NH--CO--R.sup.4 (B),其中R.sup.4是芳基、可选择性地被取代的C.sub.1-10烷基或可选择性地被芳基取代的C.sub.1-6烷氧基。