Convenient preparation of 3,5-anhydro- and 2,5-anhydropentofuranosides, and 5,6-anhydro-d-glucofuranose by use of the Mitsunobu reaction
作者:Oliver Schulze、Jürgen Voss、Gunadi Adiwidjaja
DOI:10.1016/j.carres.2004.12.027
日期:2005.3
osides are obtained by use of the Mitsunobu reaction from 2-O-protected methyl alpha-D-xylofuranosides, which are easily prepared from D-xylose. The Mitsunobu reaction of methyl 3-N-benzylamino-3-deoxy- and 3-azido-3-deoxyarabinofuranosides, which are prepared from the conveniently available methyl 2,3-anhydro-alpha-D- and 2,3-anhydro-alpha-l-lyxofuranosides by nucleophilic ring opening, yields the
通过使用Mitsunobu反应,由2-O-保护的甲基α-D-木呋喃糖苷获得甲基3,5-脱水α-D-木呋喃糖苷,其可以容易地由D-木糖制备。3-N-苄氨基-3-脱氧呋喃糖和3-叠氮基3-脱氧阿拉伯呋喃糖苷的光延反应,由可方便获得的甲基2,3-脱水α-D-和2,3-脱水α-制备通过亲核开环生成-1-呋喃呋喃糖苷,得到相应的甲基2,5-脱水α-D-和2,5-脱水α-1-呋喃糖苷。3,5-脱水-1,2-O-异亚丙基-α-D-木呋喃糖与叠氮化物的开环产生相应的5-叠氮基衍生物。产物的结构和构型通过NMR光谱确认。5,6-脱水-1,2-O-异亚丙基-α-D-葡糖呋喃糖是通过1的Mitsunobu反应形成的 2-O-异亚丙基-α-D-葡萄糖呋喃糖。通过单晶X射线衍射分析验证了其结构。