(3S,6S)-3,6-diisobutylpiperazin-2-one 、
7-甲氧基-4,5-二氢萘并[1,2-b]噻吩-2-羧酸 、
( 3S,6S)-3,6-diiso-butyl-4-((1R,2R)-2-phenylcyclopropanecarbonyl)piperazin-2-one 以to furnish 286 (90 mg, 70% yield) as a white solid的产率得到(3S,6S)-3,6-diisobutyl-4-(7-methoxy-4,5-dihydronaphtho[1,2-b]thiophene-2-carbonyl)piperazin-2-one