(3S,6S)-3,6-diisobutylpiperazin-2-one 、
4-氟-3-(三氟甲基)溴苄 、
(3S,6S)-4-(4-fluoro-2-(trifluoromethyl)benzyl)-3,6-diisobutylpiperazin-2-one 以furnished the desired product 221 (85 mg, 23.3% yield) as an oil的产率得到(3S,6S)-4-(4-fluoro-3-(trifluoromethyl)benzyl)-3,6-diisobutylpiperazin-2-one