3-异丙氧基苯甲酸   、                                                                                      
N-((3S,3aR,6S,6aR)-6-amino-hexahydrofuro[3,2-b]furan-3-yl)cyclopropanecarboxamide                                                                                                                                                                                                                                                                                                          以to yield N-((3S,3aR,6S,6aR)-6-(cyclopropanecaboxamido) hexahydrofuro[3,2-b]furan-3-yl)-3-isopropoxybenzamide (4.3 mg, 45.9%)的产率得到N-((3S,3aR,6S,6aR)-6-(cyclopropanecarboxamido)hexahydrofuro[3,2-b]furan-3-yl)-3-isopropoxy-benzamide