5-Fluorouracil derivatives, preparation thereof and their pharmaceutical compositions.

摘要

The present invention provides compounds of the general formula:- <CHEM> wherein R is an optionally substituted bridged alicyclic radical or a substituted lower alkyl radical, the substituent being an optionally substituted bridged alicyclic group, an amino, protected amino, lower alkoxy, acyl, lower alkylthio, cyano(lower)alkylthio, arylthio or optionally substituted heterocyclic radical or a carboxy and esterified carboxy group, with the proviso, that when the substituent is a carboxy or esterified carboxy group then the lower alkyl radical contains 3 to 6 carbon atoms; or an unsubstituted or substituted lower alkenyl radical, the substitutent being an optionally substituted bridged alicyclic group, an optionally substituted aryl radical or an optionally substituted heterocyclic radical; or a halophenyl radical; or an optionally substituted heterocyclic radical. The present invention also provides processes for the preparation of these compounds and pharmaceutical composition containing them. Furthermore, the present invention is concerned with a method of treating cancer which comprises administering these compounds to mammals suffering from cancer.