This invention relates to 2-substituted and 2,6-disubstituted penem compounds of the formula ##STR1## wherein Y is hydrogen, halo or certain organic substituents and X represents certain organic substituents. Also included in the invention are pharmaceutically acceptable salts of the above compounds and derivatives of the above compounds in which the carboxyl group at the 3-position is protected as by an easily removable ester protecting group. The compounds of the present invention are potent antibacterial agents or are of use as intermediates in the preparation of such agents.
本发明涉及2-取代和2,6-二取代的青霉烯化合物,其公式为##STR1##,其中Y是氢、卤素或某些有机取代基,X代表某些有机取代基。发明还包括上述化合物的药用可接受盐和上述化合物的衍
生物,其中3位的羧基被易于移除的酯保护基团所保护。本发明的化合物是强效的抗菌剂,或可用于制备此类药物的中间体。