Semisynthetic .BETA.-lactam antibiotics. III. Effect on antibacterial activity and COMT-susceptibility of chlorine-introduction into the catechol nucleus of 6-((R)-2-(3-(3,4-dihydroxybenzoyl)-3-(3-hydroxypropyl)-1-ureido)-2-phenylacetamido)penicillanic acid.

NOBUHIRO OKI, TOSHIYUKI NEHASHI, Bunya Aoki et al.|The Journal of Antibiotics|1987

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