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, KANA KOJIMA et al.|The Journal of Antibiotics|1987Cited by 30
Semisynthetic .BETA.-lactam antibiotics. IV. Synthesis and antibacterial activity of new ureidocephalosporin and ureidocephamycin derivatives containing a catechol moiety or its acetate.N. OHI, Isao Matsunaga, Bunya Aoki et al.|Chemical and Pharmaceutical Bulletin|1987Cited by 25