Pyridinium compounds containing a cation having the formula la or lb
and a pharmaceutically acceptable cation are useful as pharmaceuticals, particularly as anti-fungal agents. In formulae la and Ib R1 is alkyl of at least 3 carbon atoms or aralkyl; R2 and R5 are hydrogen or various defined substituents; R3 and R4 are hydrogen or lower alkyl; Re and R7 are lower alkyl or aryl(lower)alkyl or R6 and R7 represent a group having formula II
(where A is -(CH2)n-, O, S or NR8 where n is 0, 1 or 2 and R8 is lower alkyl) or a mono- or di- (lower alkyl) substitution product of a group having formula II.
含有具有式 la 或 lb 的阳离子和药学上可接受的阳离子的
吡啶鎓化合物可用作药物,特别是抗真菌剂。 在式 la 和 Ib 中,R1 是至少含有 3 个碳原子的烷基或芳烷基;R2 和 R5 是氢或各种定义的取代基;R3 和 R4 是氢或低级烷基;Re 和 R7 是低级烷基或芳基(低级)烷基或 R6 和 R7 代表具有式 II 的基团(其中 A 是-(
CH2)n-、O、S 或 NR8,其中 n 是 0、1 或 2,R8 是低级烷基)或具有式 II 的基团的单-或双(低级烷基)取代产物。