Tricyclic dibenzo condensed derivatives and process for...

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C - Chemistry, Metallurgy

07

D

167/207, 260/328

C07D 335/10 (2006.01) A61K 31/33 (2006.01) C07D 409/00 (2006.01)

Patent

CA 1280113

A B S T R A C T Tricyclic dibenzo condensed derivatives The invention relates to compounds having the general formula (I) Image (I) wherein R1 is carboxy, esterified carboxy or an amide of formula Image or Image , in which R9 is hydrogen or C1-C6 alkyl, A is C2-C6 alkylene and Ra and Rb are hydrogen or C1-C6 alkyl or Ra and Rb taken together with the nitrogen atom to which they are linked form a satu- rated, optionally substituted, heteromonocyclic ring; R2 is hydrogen or C1-C6 alkyl; each of R3 to R8 is independently hydrogen, halogen, C1-C6- alkyl, C3-C4 alkenyloxy or C1-C6 alkoxy; and the pharma- ceutically acceptable salts thereof, which are useful as immunomodulating and anti-viral agents

503397

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