New derivatives of penem and pharmaceutically acceptable salt thereof are herein disclosed; these compounds being useful as an antibacterial agent which has an extremely wide antibacterial spectrum, exhibits a high sensitivity to bacteria resistant to conventional penicillins and cephalosporing antibiotics and is excellent in its physico-chemical stability, solubility to water and biological stability, in particular, stability to decomposition by enzyme such as dehydropeptidase I in kidney, .beta.-lactamase; these derivatives of penem being able to be prepared by reacting 2-substituted sulfinyl derivative of penem with a thiol compound and then optionally removing protective group(s) and further alkylating the reaction product or vice versa.
本文披露了一种新的革兰氏菌素类衍
生物及其药用盐;这些化合物可用作抗菌剂,具有极广的抗菌谱,对传统
青霉素和
头孢菌素抗生素产生抗药性的细菌表现出高敏感性,并且在其物理
化学稳定性、
水溶性和
生物稳定性方面表现出优异,特别是对肾脏中的脱氢肽酶I、β-内酰胺酶等酶类的降解稳定性。这些革兰氏菌素类衍
生物可通过将革兰氏菌素的2-取代磺酰基衍
生物与
硫醇化合物反应,然后选择性去除保护基并进一步烷基化反应产物或反之亦可来制备。