(3S,6S)-3,6-diisobutyl-4-(4-phenoxybenzoyl)piperazin-2-one 、
(3S,6S)-6-(2-fluorophenyl)-3-isobutyl-piperazin-2-one 、
5-(3,4-difluorophenyl)-4-fluoroisoxazole-3-carboxylic acid 以to give the product 392 (48.8 mg, 49% yield) as a colorless oil的产率得到(3S,6S)-4-(5-(3,4-difluorophenyl)-4-fluoroisoxazole-3-carbonyl)-6-(2-fluorophenyl)-3-isobutylpiperazin-2-one