(R)-2-Amino-3-[5-((S)-2-benzyloxycarbonylamino-propionyloxy)-8-bromo-9,9-dimethyl-9H-xanthen-4-yldisulfanyl]-propionic acid methyl ester                                                                                                                                                                                              以
                                                                                         
氘代二甲亚砜                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 (R)-2-((S)-2-Benzyloxycarbonylamino-propionylamino)-3-(8-bromo-5-hydroxy-9,9-dimethyl-9H-xanthen-4-yldisulfanyl)-propionic acid methyl ester