3-benzyloxy-6-{[1,3-bis(2-benzyloxy-1-benzyloxymethylethoxy)prop-2-yl]carbamoyl}-4-nitrophenylcarbonyl-2-oxo-1,2-dihydropyridine-4-carboxylic acid   、                                                                                      
4-amino-5-[bis(2-aminoethyl)amino]pentanecarboxylic acid                                                                                                                                                                                              以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 72.0h,
                                                                                                                以89%的产率得到5-(bis-{2-[(3-benzyloxy-6-{[1,3-bis-(2-benzyloxy-1-benzyloxymethyl-ethoxy)-prop-2-yl]-carbamoyl}-2-oxo-1,2-dihydropyridine-4-carbonyl)-amino]ethyl}amino)-4-[(3-benzyloxy-6-{[1,3-bis-(2-benzyloxy-1-benzyloxymethyl-ethoxy)-prop-2-yl]-carbamoyl}-2-oxo-1,2-dihydropyridine-4-carbonyl)-amino]-pentane carboxylic acid