Coumarin derivatives, process for preparing the same and...

Details Coumarin derivatives, process for preparing the same and... Coumarin derivatives, process for preparing the same and...

C - Chemistry, Metallurgy

07

D

260/304.7

C07D 405/04 (2006.01) C07D 257/04 (2006.01) C07D 311/12 (2006.01) C07D 311/14 (2006.01) C07D 311/16 (2006.01)

Patent

CA 1144553

ABSTRACT OF THE DISCLOSURE Coumarin derivatives of the general formula: Image wherein R is hydrogen atom, an alkyl group or an alkenyl group, R1 is hydrogen atom, an alkyl group, an alkenyl group or an alkoxyl group, and the OR and R1 groups each are substituted at any of the 5, 6, 7 and 8 positions of the coumarin ring, and the salt thereof. The compounds are useful as antiallergic agent for preventing and treating allergic diseases.

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