The preparation of the thiazoline (1R,5R)-3-phenylmethyl-4-thia-2,6-diazabicyclo [3.2.0]hept-2-en-7-one (1) is presented. This compound, which has been extensively used as an intermediate for the synthesis of penems and cephams, has been obtained starting from a C-4 unsubstituted azetidinone by means of facile processes while chirality has been obtained through enzymatic resolution.
本文介绍了(1R,5R)-3-苯基甲基-4-
硫杂-2,6-二
氮杂双环[3.2.0]庚-2-烯-7-酮(1)
噻唑啉的制备方法。这种化合物被广泛用作合成青霉烯和头孢烯的中间体,它是通过简便的工艺从 C-4 未取代的氮杂
环丁酮开始获得的,而手性则是通过酶解获得的。