The specification discloses the compounds of formula I ##STR1## wherein (a) --CH.sub.2 Ar represents ##STR2## in which R.sub.1 represents hydrogen, halogen, C.sub.1 -C.sub.3 -alkyl, C.sub.1 -C.sub.3 -alkoxy, benzyloxy, hydroxy or trifluoromethyl; and R.sub.2 represents hydrogen, halogen, C.sub.1 -C.sub.3 -alkyl, C.sub.1 -C.sub.3 -alkoxy, benzyloxy, hydroxy or trifluoromethyl; provided that R.sub.2 represents hydrogen or C.sub.1 -C.sub.3 -alkyl if R.sub.1 represents trifluoromethyl, or that R.sub.1 represents hydrogen or C.sub.1 -C.sub.3 -alkyl if R.sub.2 represents trifluoromethyl; or (b) --CH.sub.2 Ar represents ##STR3## in which X represents sulfur or oxygen and in which attachment to the thiophene or furan ring is at the 2- or 3-position; and tautomers thereof; as purine nucleoside phosphorylase inhibitors.
规范披露了式I的化合物,其中(a) --CH.sub.2 Ar代表##STR2##其中R.sub.1代表氢、卤素、C.sub.1-C.sub.3-烷基、C.sub.1-C.sub.3-烷氧基、苄氧基、羟基或三
氟甲基;而R.sub.2代表氢、卤素、C.sub.1-C.sub.3-烷基、C.sub.1-C.sub.3-烷氧基、苄氧基、羟基或三
氟甲基;前提是如果R.sub.1代表三
氟甲基,则R.sub.2代表氢或C.sub.1-C.sub.3-烷基,或者如果R.sub.2代表三
氟甲基,则R.sub.1代表氢或C.sub.1-C.sub.3-烷基;或者(b) --CH.sub.2 Ar代表##STR3##其中X代表
硫或氧,且连接到
噻吩或
呋喃环的位置为2-或3-位;以及它们的互变异构体;作为
嘌呤核苷酸
磷酸化酶
抑制剂。