6-benzyloxy-3-chloromethyl-1-[5-(benzofuran-2-carboxamido)indole-2-carbonyl]indoline                                                                                                                                                              在
                                                                                                                                         palladium on activated charcoal                                                                                                                                                                                                                               
氢气   、                                                                                                  ammonium formate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        以86.9%的产率得到3-chloromethyl-6-hydroxy-1-[5-(benzofuran-2-carboxamido)indole-2-carbonyl]indoline