(3S,6S)-3,6-diisobutyl-4-(4-phenoxybenzoyl)piperazin-2-one 、
(3S,6S)-6-(2-fluorophenyl)-3-isobutyl-piperazin-2-one 、
4-fluoro-5-(4-fluorophenyl)isoxazole-3-carboxylic acid 以to give the product 380 (64.4 mg, 64% yiled) as a white solid的产率得到(3S,6S)-4-(4-fluoro-5-(4-fluorophenyl)isoxazole-3-carbonyl)-6-(2-fluorophenyl)-3-isobutylpiperazin-2-one