Regiochemistry of epoxide ring opening in methyl 2,3-anhydro-4-azido-4-deoxy-α- and β-l-lyxopyranosides
作者:Velimir Popsavin、Goran Benedeković、Mirjana Popsavin、Bojana Srećo、Dejan Djoković
DOI:10.1016/j.carres.2005.06.006
日期:2005.8
Abstract Methyl 2,3-anhydro-4- O -methanesulfonyl-α- d -ribopyranoside ( 12 ) was prepared through a new six-step sequence starting from d -arabinose. Chemical behaviour of 12 was further studied under solvolytic conditions and in the presence of azide anion as a nucleophile. Factors governing the regiochemistry of epoxide ring opening are briefly discussed.
摘要以新的六步法从d-阿拉伯糖开始,合成了甲基2,3-脱水-4-O-甲磺酰基-α-d-核吡喃糖苷(12)。在溶剂分解条件下,在叠氮化物阴离子作为亲核试剂的存在下,进一步研究了12的化学行为。简要讨论了控制环氧化物开环的区域化学的因素。