(1R,4S,6S,8S,9S,10S)-4-azido-9,10-dihydroxy-2,7-dioxabicyclo[4.4.0]decane-8-carboxylic acid 、
Fmoc-L-亮氨酸 、
三氟乙酸 以2.3 mg的产率得到(2S)-2-[[(2S,3S,4S,4aR,7S,8aS)-7-[[(2S)-2-[[(2S,3S,4S,4aR,7S,8aS)-7-amino-3,4-dihydroxy-2,3,4,4a,6,7,8,8a-octahydropyrano[3,2-b]pyran-2-carbonyl]amino]-4-methylpentanoyl]amino]-3,4-dihydroxy-2,3,4,4a,6,7,8,8a-octahydropyrano[3,2-b]pyran-2-carbonyl]amino]-4-methylpentanoic acid;2,2,2-trifluoroacetic acid