N-(Substituted chromone-3-carbonyl) phenylglycine derivatives represented by the formula
in which R, represents a hydrogen atom, and each R, represents a hydrogen atom, an alkoxycarbonyl group or a chlorine-substituted carbonyl group, are useful intermediates for cephem compounds which are excellent as antibacterial agents.
N-(取代的
色酮-3-羰基)苯基甘
氨酸衍
生物由式(其中 R 代表氢原子,每个 R 代表氢原子、烷氧羰基或
氯取代的羰基)表示,是具有优异抗菌性能的头孢类化合物的有用中间体。