(2R,5S,6R)-2-[[tert-butyl(dimethyl)silyl]oxymethyl]-5-methyl-6-[(2-methylpropan-2-yl)oxy]oxan-3-one 生成 benzyl N-[(2R,4R,5S,6R)-2-[[tert-butyl(dimethyl)silyl]oxymethyl]-5-methyl-6-[(2-methylpropan-2-yl)oxy]-3-oxooxan-4-yl]-N-(phenylmethoxycarbonylamino)carbamate