申请人:Pfizer Inc.
公开号:US04234579A1
公开(公告)日:1980-11-18
Penicillanic acid 1,1-dioxide, and esters thereof readily hydrolyzable in vivo, are useful as antibacterial agents, and also for enhancing the effectiveness of several .beta.-lactam antibiotics against many .beta.-lactamase producing bacteria. Derivatives of penicillanic acid 1,1-dioxide having the carboxy group protected by a conventional penicillin carboxy protecting group are useful intermediates to penicillanic acid 1,1-dioxide. Penicillanic acid 1-oxides and certain esters thereof are useful chemical intermediates to penicillanic acid 1,1-dioxide and its esters.
青霉烷酸1,1-二氧化物及其酯在体内容易水解,可用作抗菌剂,也可增强多种β-内酰胺类抗生素对许多β-内酰胺酶产生细菌的有效性。将青霉烷酸1,1-二氧化物的衍生物中的羧基用传统的青霉素羧基保护基保护起来,可作为青霉烷酸1,1-二氧化物的中间体。青霉烷酸1-氧化物及其某些酯是青霉烷酸1,1-二氧化物及其酯的有用化学中间体。