Quinoline derivatives of the formula,
wherein R1, R2, R3 and R4 are each hydrogen or one of a specific range of substituents,
is one of a specific range of cyclic groups, and are useful as pharmaceuticals such as anti-senile dementia. They may be prepared by synthetic routes analogous to those described in the literature for preparing known compounds.
喹啉衍
生物的公式,其中R1、R2、R3和R4各自是氢或特定范围内的一个取代基,是一个特定范围内的环状基团,并且可用作抗老年痴呆症等药物。它们可以通过与文献中描述的已知化合物相似的合成路线来制备。