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US4331606A N-(Substituted chromone-3-carbonyl)-phenylglycine derivatives 失效
N-(取代的色酮-3-羰基) - 苯基甘氨酸衍生物

N-(Substituted chromone-3-carbonyl)-phenylglycine derivatives
摘要:
N-(Substituted chromone-3-carbonyl)phenylglycine derivatives. These derivatives are useful intermediates for cephem compounds which are excellent as antibacterial agents.
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