6β-((R)-2,2-dimethyl-3-nitroso-5-oxo-4-phenyl-imidazolidin-1-yl)-1ξ-oxo-1λ4-penicillanic acid                                                                                                                                                              在
                                                                                                                                                                                 
盐酸   、                                                                                                  
对甲苯磺酸                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
1,4-二氧六环                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 (6R)-7t-((R)-2,2-dimethyl-5-oxo-4-phenyl-imidazolidin-1-yl)-3-methyl-8-oxo-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid