methyl (2R,3S,4R)-3-[tert-butyl(dimethyl)silyl]oxy-4-[(4R,5R)-5-[(2R,3R,4S)-4-[(4R,5S)-5-[(1R)-1-[tert-butyl(dimethyl)silyl]oxypropyl]-2,2,5-trimethyl-1,3-dioxolan-4-yl]-3-hydroxy-2-methylpentyl]-2,2,5-trimethyl-1,3-dioxolan-4-yl]-2-methylpentanoate 在
叠氮化锂 、
四丁基氟化铵 作用下,
以
四氢呋喃 、
六甲基磷酰三胺 为溶剂,
生成 (2R,3S,4S)-4-((4R,5R)-5-{(2R,3S,4S)-3-Azido-4-[(4R,5R)-5-((R)-1-hydroxy-propyl)-2,2,5-trimethyl-[1,3]dioxolan-4-yl]-2-methyl-pentyl}-2,2,5-trimethyl-[1,3]dioxolan-4-yl)-3-hydroxy-2-methyl-pentanoic acid methyl ester