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The ~1HNMR data for 7βg- (6-substituted-2quinolone-3-acetamido) -and 7β- (6-substituted-4-hydroxyquinoline-3-formamido)-cephalosporinswere reported. The influence of substituents on chemical shifts and the generalprocedure for determining the structures of cephalosporins were discussed.
The ~ 1HNMR data for 7βg- (6-substituted-2quinolone-3-acetamido) -and 7β- (6-substituted-4-hydroxyquinoline-3-formamido) -cephalosporinswere reported. The influence of substituents on chemical shifts and the general procedure for determining the structures of cephalosporins were discussed.