methyl (3aR,4R,6S,7aS)-6-(4-methylphenyl)sulfanyl-2-oxo-4-[(1R,2R)-1,2,3-trihydroxypropyl]-3a,4,7,7a-tetrahydro-3H-pyrano[3,4-d][1,3]oxazole-6-carboxylate 在
吡啶 作用下,
以
二氯甲烷 、
乙腈 为溶剂,
反应 7.5h,
生成
methyl (dibutylphosphate 5-amino-5-N,4-O-carbonyl-7,8-di-O-chloroacetyl-9-O-fluorenylmethoxycarbonyl-3,5-dideoxy-D-glycero-α-D-galacto-non-2-ulopyranoside)onate