5c,9t,11anti-triacetoxy-5t-acetoxymethyl-10-(N',N''-diacetyl-guanidino)-2,2-dimethyl-(3at,4ac,10ac,10bt)-octahydro-6r,10c-methano-[1,3]dioxolo[4',5':4,5]furo[2,3-d]oxocin-8-one                                                                                                                                                              在
                                                                                                                                                                                 
溶剂黄146                                                                                                                                  作用下,
                                                                                                                                                                                                                            生成                                                 7
c,12
syn-diacetoxy-7
t-acetoxymethyl-2-acetylamino-10,10-dimethyl-(3a
t,7a
c,8a
t,11a
t,11b
c)-1(3),3a,6,7,7a,8a,11a,11b-octahydro-6
r,12c
c-methano-[1,3]dioxolo[4'',5'':4',5']furo[3',2':5,6]oxocino[3,4-
d]imidazol-4-one