Novel carbapenem compounds, (1R,5S,6S)-2-\x9b1-(1,3-thiazolin-2-yl)azetidin-3-yl!thio-6-\x9b(R)-1-hydroxyeth yl!-1-methyl-carbapen-2-em-3-carboxyic acid derivatives. These carbapenem compounds are represented by the following formula having a beta-coordinated methyl group introduced at the 1-position and a \x9b1-(1,3-thiazolin-2-yl)azetidin-3-yl!thio group introduced at the 2-position. ##STR1## In the formula, R is hydrogen; lower alkyl group which is unsubstituted or substituted by hydroxy, lower alkoxy or lower alkoxy-lower alkoxy group; group --COOR.sup.1 (R.sup.1 is hydrogen or lower alkyl group); or group --CONR.sup.2 R.sup.3 (R.sup.2 and R.sup.3 are, independently each other, hydrogen or lower alkyl), and Y is carboxy, --COO.sup..crclbar. or protected carboxy. These compounds are useful antibiotics for prevention and treatment of bacterial infections.
新型碳青霉烯衍
生物,(1R,5S,6S)-2-\x9b1-(1,3-
噻唑啉-2-基)氮杂丁-3-基!
硫-6-\x9b(R)-1-羟乙基!-1-甲基-碳青霉烯-2-烯-3-
羧酸衍
生物。这些碳青霉烯衍
生物由以下公式表示,其中在1位引入了一个β-配位的甲基基团,在2位引入了一个\x9b1-(1,3-
噻唑啉-2-基)氮杂丁-3-基!
硫基团。##STR1## 在公式中,R是氢;下位烷基基团,未取代或取代为羟基、下位烷氧基或下位烷氧基-下位烷氧基基团;基团--COOR.sup.1(其中,R.sup.1是氢或下位烷基基团);或基团--CONR.sup.2R.sup.3(其中,R.sup.2和R.sup.3分别独立地是氢或下位烷基),而Y是羧基、--COO.sup..crclbar.或保护羧基。这些化合物是预防和治疗细菌感染的有用抗生素。