5-((1S,2R,3R)-4-{[5-((1S,2R,3R)-4-{[5-((1S,2R,3R)-4-Azido-1,2,3-trihydroxy-butyl)-2-methyl-furan-3-carbonyl]-amino}-1,2,3-trihydroxy-butyl)-2-methyl-furan-3-carbonyl]-amino}-1,2,3-trihydroxy-butyl)-2-methyl-furan-3-carboxylic acid ethyl ester 、 alkaline earth salt of/the/ methylsulfuric acid 以38 mg的产率得到2-Methyl-5-((1S,2R,3R)-1,2,3-triacetoxy-4-{[2-methyl-5-((1S,2R,3R)-1,2,3-triacetoxy-4-{[2-methyl-5-((1S,2R,3R)-1,2,3-triacetoxy-4-azido-butyl)-furan-3-carbonyl]-amino}-butyl)-furan-3-carbonyl]-amino}-butyl)-furan-3-carboxylic acid ethyl ester