N1,N5-双-Boc-亚精胺   、                                                                                      
2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl isothiocyanate                                                                                                                                                                                              以
                                                                                         
甲苯                                                                                  为溶剂,
                                                                                                                                                    反应 8.0h,
                                                                                                                以81%的产率得到acetic acid 4,5-diacetoxy-6-acetoxymethyl-2-(3-{3-[tert-butoxycarbonyl-(4-tert-butoxycarbonylamino-butyl)-amino]-propyl}-thioureido)-tetrahydro-pyran-3-yl ester