83-87-4, (3R,4S,5R,6R)-6-(Acetoxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetrayl tetraacetate is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated
83-87-4, (1) Weigh the hydroxyacetylated glucose intermediate (35 g, 89.7 mmol) obtained in step (1)Triethylamine (4.75 g, 46.9 mmol),3,4-dimethoxyphenol (20G, 129.7 mmol),Sequentially added to dichloromethane (250mL) at 0 C conditions,Boron trifluoride ethyl ether silica gel (50 g)Then naturally warmed to room temperature for 9 hours; then the organic phaseWashed successively with saturated sodium bicarbonate, saturated brine, filtered,Concentrated, recrystallized from anhydrous methanol,A yield of 94.3% was obtained for 40.95 g of glycoside intermediate substituted at the position of glucose anomeric carbon.
As the paragraph descriping shows that 83-87-4 is playing an increasingly important role.
Reference£º
Patent; Dongying Daoyi Bio-pharmaceutical Technology Co., Ltd.; Weifang Hongnuo He Tai New Materials Technology Co., Ltd.; Li Fahui; (5 pag.)CN107151260; (2017); A;,
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