申请人:Beecham Group plc
公开号:US04971975A1
公开(公告)日:1990-11-20
A compound of formula (I) or a pharmaceutically acceptable salt thereof: ##STR1## in which X represents R.sub.1 OOC-- in which R.sub.1 is C.sub.1-4 alkyl, C.sub.2-4 alkenyl or C.sub.2-4 alkynyl; R.sub.2 O-- in which R.sub.2 is C.sub.1-2 alkyl, C.sub.1-2 alkylcarbonyl or aminocarbonyl optionally substituted by one or two methyl groups; a group ##STR2## in which Y represents a 3-membered divalent residue completing a 5-membered aromatic ring and comprises one or two heteroatoms selected from oxygen, nitrogen and sulphur, any amino nitrogen optionally substituted by a C.sub.1-2 alkyl group, Y being optionally C-substituted by a methyl group; or a group ##STR3## in which A.sub.1 is oxygen or sulphur, one of A.sub.2 and A.sub.3 is CR.sub.3 and the other is nitrogen or CR.sub.4 where R.sub.3 and R.sub.4 are independently selected from hydrogen and methyl; and each of p and q independently represents an integer of 2 to 4.
化学式(I)的化合物或其药学上可接受的盐:##STR1## 其中X代表R.sub.1 OOC--,其中R.sub.1是C.sub.1-4烷基,C.sub.2-4烯基或C.sub.2-4炔基;R.sub.2 O--其中R.sub.2是C.sub.1-2烷基,C.sub.1-2烷基羰基或氨基羰基,可选择地被一个或两个甲基基团取代;一个基团##STR2## 其中Y代表一个3-成员二价残基,完成一个5-成员芳香环并包括一个或两个从氧、氮和硫中选择的杂原子,任何氨基氮可选择地被一个C.sub.1-2烷基基团取代,Y可选择地被一个甲基基团取代;或一个基团##STR3## 其中A.sub.1是氧或硫,A.sub.2和A.sub.3中的一个是CR.sub.3,另一个是氮或CR.sub.4,其中R.sub.3和R.sub.4分别独立地选择自氢和甲基;每个p和q独立地表示2到4的整数。