Pyridine derivatives and process for preparing the same

Details Pyridine derivatives and process for preparing the same Pyridine derivatives and process for preparing the same

C - Chemistry, Metallurgy

07

D

260/296.3

C07D 213/81 (2006.01)

Patent

CA 1240332

Abstract of the Disclosure The invention is concerned with novel pyridine derivatives having the general formula: Image (I) wherein R1 is a hydrogen atom or a lower alkyl group which may be substituted with hydroxy, lower alkoxy or di-lower alkylamino; R2 is a hydrogen atom, an amino group or a lower alkylamino group; and R3 is a lower alkyl group, as well as the pharmaceutically acceptable salts thereof. The derivatives of the formula (I) and their pharmaceutically acceptable salts exhibit anti- allergic effects by the two different mechanisms and hence are useful as drugs for treating allergic diseases such as asthma, pollen allergy, atopic dermatitis and the like.

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