1-dibenzyl 2-dimethyl 4,4'-((3R,8R)-8-formamido-3-((2-methoxy-2-oxoethyl)carbamoyl)-9,12-dioxo-13-oxa-5,6-dithia-2,10-diazatetradecanoyl)(2S,2'S,4R,4'R)-bis(pyrrolidine-1,2-dicarboxylate)                                                                                                                                                              在
                                                                                                                                                                                 
sodium hydroxide                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                    反应 18.5h,
                                                                                                                以98%的产率得到(2'S,4R,4'R)-4,4'-((((2R,2'R)-disulfanediylbis(3-((carboxymethyl)amino)-3-oxopropane-1,2-diyl))bis(azanediyl))bis(carbonyl))bis(1-((benzyloxy)carbonyl)-L-proline)