(1R,11R,12R,14R,19S)-12-methoxy-17,17-dimethyl-6-nitro-13,16,18-trioxa-2,10-diazatetracyclo[9.8.0.03,8.014,19]nonadeca-3(8),4,6-trien-9-one                                                                                                                                                              在
                                                                                                                                                                                 
盐酸                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        以99%的产率得到(1R,3R,4S,4aR,11aR)-4-Hydroxy-3-hydroxymethyl-1-methoxy-8-nitro-3,4,4a,5,11,11a-hexahydro-1H-2-oxa-5,11-diaza-dibenzo[a,d]cyclohepten-10-one