Process for preparing pyrimido (2,1-b) benzothiazoles and...

Details Process for preparing pyrimido (2,1-b) benzothiazoles and... Process for preparing pyrimido (2,1-b) benzothiazoles and...

C - Chemistry, Metallurgy

07

D

167/211, 260/242

C07D 513/04 (2006.01) A61K 31/505 (2006.01) C07D 277/82 (2006.01)

Patent

CA 1257259

A B S T R A C T The invention relates to a process for preparing compounds of formula (I) : Image (I) wherein R and R3 represent hydrogen, alkyl C1-6 or together cycloalkyl C3-6 ; R1 represents hydroxy, alkoxy C1-6 or Image ; R5 and R6 represent hydrogen, alkyl C1-6 or together piperidino or morpholino ; R2 represents hydrogen, alkyl C1-6, alkoxy carbonyl C2-7, cycloalkyl C3-6, aralkyl, aryl, aryl substituted by halogen, by alkyl C1-6 or by alkoxy C1-6 or heteroaryl and salts thereof. The new compounds have valuable pharmacological properties, especially antiallergic properties.

474113

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