A complete series of eight 1,6:2,3- and 1,6:3,4-dianhydro-β-D-hexopyranoses were subjected to fluorination with DAST. The 1,6:3,4-dianhydropyranoses yielded solely products of skeletal rearrangement resulting from migration of the tetrahydropyran oxygen (educts of D-altro and D-talo configuration) or of the 1,6-anhydro bridge oxygen (D-allo, D-galacto). The major products yielded by the 1,6:2,3-dianhydropyranoses were compounds arising from nucleophilic substitution, with configuration at C4 either retained (D-talo, D-gulo) or inverted (D-manno), or from C6 migration (D-allo). The minor products in the 1,6:2,3-series resulted from migration of the tetrahydropyran oxygen (D-gulo) or the oxirane oxygen (D-manno), or from nucleophilic substitution with retention of configuration (D-manno). The structure of most of the rearranged products was verified by X-ray crystallography.

中文翻译：

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1,6：2,3-和1,6：3,4-二脱水-β - d-六吡喃糖与二乙基氨基硫三氟化物的反应引起的骨骼重排†

用DAST对8个1,6：2,3-和1,6：3,4-二脱水-β - D-己吡喃糖的完整系列进行氟化。1,6-：3,4-dianhydropyranoses产生从四氢吡喃氧迁移所得的（离析物的骨架重排的单独的产品d -雅卓和d - TALO配置）或1,6-脱水桥氧的（d -异体，D - galacto）。由1,6得到的主要产物：2,3- dianhydropyranoses来自亲核取代而产生的化合物，具有配置在C4任一保留（d -距骨，d -gulo）或倒置（D - manno），或来自C6迁移（D - allo）。1,6：2,3系列中的次要产物是由四氢吡喃氧（D - gulo）或环氧乙烷氧（D - manno）迁移或亲核取代并保留构型（D - manno）产生的。大多数重排产物的结构通过X射线晶体学证实。