(3aR,5R,6S,6aR)-5-(((S)-2-((tert-butoxycarbonyl)amino)propanamido)methyl)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-6-yl benzoate                                                                                                                                                              在
                                                                                                                                                                                 
劳森试剂                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        以78%的产率得到(3aR,5R,6S,6aR)-5-(((S)-2-((tert-butoxycarbonyl)amino)propanethioamido)methyl)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-6-yl benzoate