New coumarin derivatives, processes for the preparation...

Details New coumarin derivatives, processes for the preparation... New coumarin derivatives, processes for the preparation...

C - Chemistry, Metallurgy

07

D

C07D 311/08 (2006.01) C07D 311/14 (2006.01) C07D 311/16 (2006.01) C07D 311/18 (2006.01)

Patent

CA 2209404

The present invention relates to new coumarin derivatives represented by the general formula I (see formula I) wherein R1 = NH2 or -NHCH=C(CO2C2H5)2, R2 = R3 = R4 = H, R5 = F, R1 = R3 = NHCH=C(CO2C2H5)2, R2 = R4 = R5 = H, R1 = H or OH, R3 = NHCH=C(CO2C2H5)2, R2 = R4 = R5 = H, R1 = OH, R2 = R3 = R4 = H, R5 = -NHCH=C(CO2C2H5)2, R1 = R3 = R5 = H, R2 = CH3 or CF3, R4 = -NHCH=C(CO2C2H5)2, processes for the preparation thereof and their use as intermediates for the synthesis of new coumarin derivatives with potential biological action.

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