(2R,3S)-1-((1S,3R)-3-(allyloxy)-6-bromo-2,3-dihydro-1H-inden-1-ylamino)-3-amino-4-(3,5-difluorophenyl)butan-2-ol 、 (S)-2-(N-methylhexanamido)hex-5-enoic acid 、
(2R,3S)-N-(3-(allyloxy)-6-phenoxy-2,3-dihydro-1H-inden-1-yl)-2-(tert-butyldimethylsilyloxy)-4-phenylbutane-1,3-diamine 以to afford 650 mg (40% yield) of (2S)-N-((2S,3R)-4-(3-(allyloxy)-6-phenoxy-2,3-dihydro-1H-inden-1-ylamino)-3-(tert-butyldimethylsilyloxy)-1-phenylbutan-2-yl)-2-(N-methylhexanamido)hex-5-enamide的产率得到(2S)-N-((2S,3R)-4-(3-(allyloxy)-6-phenoxy-2,3-dihydro-1H-inden-1-ylamino)-3-(tert-butyldimethylsilyloxy)-1-phenylbutan-2-yl)-2-(N-methylhexanamido)hex-5-enamide