Synthesis of medium and large rings, XLVII Synthesis of heptano bridged pyranoside derivatives

被引:0
|
作者
Kirsch, V
Wolff, C
Näther, C
Tochtermann, W
机构
[1] Univ Kiel, Inst Organ Chem, D-24098 Kiel, Germany
[2] Univ Kiel, Inst Anorgan Chem, D-24098 Kiel, Germany
关键词
bridged pyranose derivatives; ring enlargement; carbenes; glycosides;
D O I
暂无
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Addition of dichlorocarbene to the glycal (+/-)-2 followed by cyclopropyl-allyl rearrangement leads to the chloro-2H-pyran (+/-)-4. Oxidation of (+/-)-4 and reduction of the obtained hydroxypyranone (+/-)-5 gave the methyl pyranoside (+/-)-6. The relative configuration of (+/-)-6 was established by X-ray structural analysis of the corresponding acetate (+/-)-7. The synthesis of the optically active starting materials (+)-2 and (-)-2 is also reported.
引用
收藏
页码:1741 / 1744
页数:4
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