申请人:Fisons plc
公开号:US04518612A1
公开(公告)日:1985-05-21
There are described compounds of formula I, ##STR1## in which Ra, Rb, Rc, Rd, Re, Rf and Rg, which may be the same or different, each represent hydrogen, amino, hydroxy, alkoxy, alkenyloxy, halogen, acyl, alkenyl, alkyl, or alkoxy substituted by phenyl, Rh is hydrogen, alkyl or --COOH. X is a hydrocarbon chain containing from 2 to 10 carbon atoms and optionally substituted by a hydroxy group, A has no significance or represents Y, OY, or SY and Y represents a C 1 to 4 hydrocarbon chain which is optionally substituted by alkyl C 1 to 4, E and G, which may be the same or different, each represent --O--, --S-- or --CH.sub.2 --, provided that at least one of E and G is --O-- or --S--, L, together with the carbon atoms to which it is attached, forms a benzene, furan, thiophene, pyrrole, or pyran-2-one ring, and pharmaceutically acceptable derivatives thereof.
公式I中描述了化合物,##STR1## 其中Ra、Rb、Rc、Rd、Re、Rf和Rg可以相同或不同,分别表示氢、氨基、羟基、烷氧基、烯基氧基、卤素、酰基、烯基、烷基或苯基取代的烷氧基,Rh表示氢、烷基或--COOH。X是一个含有2至10个碳原子的碳氢链,可以选择地被一个羟基取代,A没有意义或表示Y、OY或SY,Y表示一个C1至4的碳氢链,可以选择地被烷基C1至4取代,E和G可以相同或不同,分别表示--O--、--S--或--CH.sub.2--,但至少有一个是--O--或--S--,L与其附着的碳原子一起形成苯、呋喃、噻吩、吡咯或吡喃-2-酮环,并且其药学上可接受的衍生物。