benzyl N-[(3aR,4R,5R,7aR)-7-[[(4aR,6S,7R,8R,8aR)-6-methoxy-7-(methoxymethoxy)-2,2-dimethyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl]methyl]-4-[tert-butyl(dimethyl)silyl]oxy-2,2-dimethyl-3a,4,5,7a-tetrahydro-1,3-benzodioxol-5-yl]carbamate 在
sodium tetrahydroborate 、
臭氧 作用下,
生成