(S)-2-Amino-pentanedioic acid 5-amide 1-{[(R)-1-{(S)-1-[(R)-1-[(S)-1-((S)-1-carbamoyl-3-methylsulfanyl-propylcarbamoyl)-3-methyl-butylcarbamoyl]-2-(1H-indol-3-yl)-ethylcarbamoyl]-2-phenyl-ethylcarbamoyl}-2-(1H-indol-3-yl)-ethyl]-amide}                                                                                                                                                              在
                                                                                                                                                                                 p-mercaptoacetic acid   、                                                                                                  
溶剂黄146                                                                                                                                  作用下,
                                                                                                                                                                                        反应 16.0h,
                                                                                                                以70.6 mg的产率得到pGlu-D-Trp-Phe-D-Trp-Leu-Met-NH2