Syntheses related to the 3,7-anhydro-octose in the ezomycins and the octosyl acids
作者:Kwan Soo Kim、Walter A. Szarek
DOI:10.1016/s0008-6215(00)81033-2
日期:——
Abstract Two 3,7-anhydro-octoses, namely, methyl 3,7-anhydro-5,6,8-trideoxy-β- d - allo -octofuranoside and methyl 3,7-anhydro-5,6,8-trideoxy-α- l - talo -octofuranoside, have been synthesized. The synthetic sequence includes the preparation of an octose from d -ribose by way of a Wittig reaction and the elaboration of the bicyclic-ring system by intramolecular cyclization.
摘要两个3,7-脱水八糖,即甲基3,7-脱水-5,6,8-三苯氧基-β-d-异-呋喃呋喃糖苷和甲基3,7-脱水-5,6,8-三苯氧基-已经合成了α-1-talo-八氢呋喃糖苷。合成序列包括通过维蒂希(Wittig)反应从d-核糖制备八糖,以及通过分子内环化加工双环系统。