Cycloaddition reactions of cephalosporin compounds.<b>XI</b>. 1,3-dipolar cycloaddition reaction of an exo-2-methylenecephem with diphenyldiazomethane
作者:János Pitlik、J. Csaba Jászberényi
DOI:10.1002/jhet.5570260238
日期:1989.3
In the 1,3-dipolar cycloaddition reaction of the exo-2-methylenecephem 6 with diphenyldiazomethane the initially formed pyrazolines decompose and spirocyclopropylcephalosporin formation takes place. The structure elucidation with 1H, 13C, ASIS and NOE nmr methods is also described.
在exo-2-亚甲基乙草醚6与二苯基重氮甲烷的1,3-偶极环加成反应中,最初形成的吡唑啉分解,并形成了螺环丙基头孢菌素。还描述了用1 H,13 C,ASIS和NOE nmr方法进行的结构阐明。