Patent ID: 6417175
Filing Date: 2002-07-09
Classification: A61P,C07D,C07F

Abstract:
A compound of the formula: wherein R1 is a phosphono group;R2 is a hydrogen atom, an optionally substituted C1-6 alkyl group or a C3-5 cycloalkyl group; each of Q and X is a nitrogen atom or CH; Y is S; n is 0 or 1; one of R3 and R4 is a pyridinium group which may be substituted and the other is a hydrogen atom or a hydrocarbon group which may be substituted, or R3 and R4 taken together may form a quaternized nitrogen-containing heterocyclic ring which may be substituted, wherein when R3 and R4 are taken together, the group of the formula wherein R5 is an optionally substituted hydrocarbon group; or salt thereof.