作者:Nigel K. Capps、Gareth M. Davies、David Loakes、Douglas W. Young
DOI:10.1039/b006415g
日期:——
Several compounds related to the cephalosporin antibiotics and containing a novel tricyclic β-lactam system have been prepared in the expectation that they might have a more strained β-lactam ring than the parent compounds. In the event, synthetic problems required that the compounds prepared containing this system had a reduced thiazine ring. The ring strain was not exceptional as judged by the absorption
已经制备了几种与头孢菌素抗生素有关的化合物,并含有新的三环β-内酰胺系统,期望它们可能比母体化合物具有更大的β-内酰胺环张力。结果,由于合成问题,所制备的含有该体系的化合物具有还原的噻嗪环。根据红外吸收频率判断,环应变并非异常。