(3S,7S)-3-isobutyl-7-phenyl-[1,4]diazepan-2-one 、
(1R,2R)-trans-2-phenyl-1-cyclopropanecarboxylic acid 、
(3S,6S)-4-cinnamoyl-3,6-diisobutylpiperazin-2-one 以to furnish 417 (55 mg, 69.4% yield) as a white solid的产率得到(3S,7S)-3-isobutyl-7-phenyl-4-((1R,2R)-2-phenylcyclopropanecarbonyl)-1,4-diazepan-2-one