2,3-propanoimidazo[5,1-b]thiazole   、                                                                                      allyl (1S,5R,6S)-6-[(1R)-1-allyloxycarbonyloxyethyl]-2-hydroxymethyl-1-methyl-1-carbapen-2-em-3-carboxylate                                                                                                                                                                                                                                                                                                          生成                                                 (1S,5R,6S)-6-[(1R)-1-hydroxyethyl]-2-[2,3-propanoimidazo[5,1-b]thiazolium-6-yl)methyl-1-methyl-1-carbapen-2-em-3-carboxylate