| abstract |
The present invention is a compound of the general formula:n n n n n n n n Where R, R 3 , R 4 , X and Y are defined in the specification. This compound exhibits antibiotic activity against a wide range of organisms, including organisms resistant to tetracycline and is useful as an antibiotic 7- (substituted) -8- (substituted) -9 [(substituted glycyl) amido] -6- Novel [4S- (4α, 12aα)]-4- (dimethylamino) -7- (substituted) -8- (substituted) -9-[[(substituted as demethyl-6-deoxytetracycline Amino) substituted] amino] -1,4,4a, 5,5a, 6,11,12a-octahydro-3,10,12,12a-tetrahydroxy-1,11-dioxo-2-naphthacene It is used as a useful intermediate for preparing carboxamides. |