C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/111
C07D 499/00 (2006.01)
Patent
CA 1180695
A B S T R A C T The present invention relates to compounds of the formula Image (I) wherein n is 0 to 4; R is hydrogen, an alkali metal or quaternary ammonium cation or a metabolisable ester group; R1 and R2 are independently hydrogen or lower alkyl; R4 is hydrogen, lower alkyl or a group of the formula R5CHOH- with R5 being hydrogen, lower alkyl, aryl, aralkyl, heteroaryl or heteroaralkyl; R6 is amino, loweralkylamino, an .alpha.-aminoacid residue bonded through the a-nitrogen atom or the group -OR8 with R8 being hydrogen, lower alkyl, allyl, aryl, aralkyl, an alkali metal or quaternary ammonium cation or a metabolisable ester group; R7 is hydrogen, loweralkyl, loweralkoxycarbonyl, aryl, aralkyl, aralkoxycarbonyl, arylsulfonyl, acyl, or, - 2 - together with the N-hydrogen, the grouping Image wherein either R9 is aryl and R10 is hydrogen, lower alkyl or aralkyl; or R9 is hydrogen, amino or mono- or dilower-alkylamino and R10 is amino, mono- or diloweralkyl amino, lower alkyl, aryl, aralkyl or lower alkoxycarbonyl; and 1,3- dicarbonyl adducts at the 2'-amino group when R7 is hydrogen; to pharmaceutical compositions comprising such compounds and methods for preparing them.
384249
Schering Corporation
Swabey Ogilvy Renault
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