3-Acylamino-3-(5-fluorouracil-1-yl) propionates (3a, b) and 4-acylamino-4-(5-fluoro-uracil-1-yl) butyrates (3c-e) were synthesized from 3-acylamino-3-carboxypropionates (1a, b) and 4-acylamino-4-carboxybutyrates (1c-e), respectively, via electrochemical oxidation. Catalytic hydrogenolysis of the benzyl esters (3a, c, d) gave the corresponding carboxylic acids (4a', c', d') without cleavage of the geminal diamine moieties.
                                    3-酰
氨基-3-(5-
氟尿
嘧啶-1-基)
丙酸酯 (3a, b) 和 4-酰
氨基-4-(5-
氟尿
嘧啶-1-基)
丁酸酯 (3c-e) 分别通过电
化学氧化从3-酰
氨基-3-羧基
丙酸酯 (1a, b) 和4-酰
氨基-4-羧基
丁酸酯 (1c-e) 合成。对苄基酯 (3a, c, d) 的催化氢解反应生成相应的
羧酸 (4a', c', d'),而未裂解邻位二胺基团。