(3S,6S)-3,6-diisobutyl-4-(4-phenoxybenzoyl)piperazin-2-one 、
(3S,6S)-6-cyclohexyl-3-isobutylpiperazin-2-one 、
4-fluoro-5-(4-fluorophenyl)isoxazole-3-carboxylic acid 以to give the product 382 (25.9 mg, 26% yield) as a white solid的产率得到(3S,6S)-6-cyclohexyl-4-(4-fluoro-5-(4-fluorophenyl)isoxazole-3-carbonyl)-3-isobutylpiperazin-2-one