A first embodiment of the invention relates to novel carbapenem compounds, (1R, 5S, 6S)-2-\x9b1-(1,3-thiazolin-2-yl)azetidin-3-yl!thio-6-\x9b(R)-1-hydroxy-ethyl!-1- methylcarbapen-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-thia-zolin-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. The second embodiment of the invention relates to 3-mercapto-1-(1,3-thiazolin-2-yl)azetidine represented by the following formula and its acid addition salts ##STR2## and to the production process therefor. The above compounds are useful as intermediates for preparing carbapenem compounds, which have strong antibacterial activity, with convenience and high yield.
本发明的第一实施例涉及新型碳青霉烯化合物,(1R, 5S, 6S)-2-\x9b1-(1,3-
噻唑啉-2-基)氮杂
丙烷-3-基!
硫-6-\x9b(R)-1-羟基-乙基!-1-甲基碳青霉烯-2-烯-3-
羧酸衍
生物。这些碳青霉烯化合物由下式表示,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
丙烷-3-基!
硫基团。 ##STR1## 在公式中,R是氢;未经取代或经过羟基、较低的烷氧基或较低的烷氧基-较低的烷氧基基团取代的较低的烷基;基团--COOR.sup.1 (R.sup.1是氢或较低的烷基);或基团--CONR.sup.2 R.sup.3 (R.sup.2和R.sup.3独立地为氢或较低的烷基),Y是羧基、--COO.sup..crclbar.或保护羧基。这些化合物是有用的抗生素,可用于预防和治疗细菌感染。本发明的第二实施例涉及3-巯基-1-(1,3-
噻唑啉-2-基)氮杂
丙烷及其酸加合盐,由下式表示: ##STR2## 以及其制备过程。上述化合物是制备具有强抗菌活性的碳青霉烯化合物的中间体,具有方便和高产率的优点。