(2R,3R,4R,4aR,10bR)-7-iodo-8,10-dimethoxy-3,4-bis(phenylmethoxy)-2-(phenylmethoxymethyl)-2,3,4,4a,6,10b-hexahydropyrano[3,2-c]isochromene | 647832-36-8

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (2R,3R,4R,4aR,10bR)-7-iodo-8,10-dimethoxy-3,4-bis(phenylmethoxy)-2-(phenylmethoxymethyl)-2,3,4,4a,6,10b-hexahydropyrano[3,2-c]isochromene
• CAS: 647832-36-8
• 化学式: C₃₆H₃₇IO₇
• 分子量: 708.59
• InChiKey: BTDUKHPUIHGHMT-BWXPVFSOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.7
• 重原子数：
  44
• 可旋转键数：
  12
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  64.6
• 氢给体数：
  0
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  (2R,3R,4R,4aR,10bR)-7-iodo-8,10-dimethoxy-3,4-bis(phenylmethoxy)-2-(phenylmethoxymethyl)-2,3,4,4a,6,10b-hexahydropyrano[3,2-c]isochromene 在 溶剂黄146 、 锌 作用下， 以85%的产率得到(2R,3R,4R,4aR,10bR)-8,10-dimethoxy-3,4-bis(phenylmethoxy)-2-(phenylmethoxymethyl)-2,3,4,4a,6,10b-hexahydropyrano[3,2-c]isochromene
  参考文献：
  名称：

  Intramolecular C-glycosylation of 2-O-benzylated pentenyl mannopyranosides: remarkable 1,2-trans stereoselectivity

  摘要：

  The IDCP-promoted intramolecular C-glycosylation of pentenyl alpha-mannopyranosides carrying, at O-2, an activated benzyl group gave, unexpectedly, the 1,2-trans-fused bicyclic product which corresponds to an alpha-C-aryl mannopyranose derivative. This remarkable, strained C-glycosyl compound was rapidly epimerized to the more stable 1,2-cis product on treatment with BF3.Et2O. The IDCP-reaction product could be elaborated into a 2-(alpha-C-mannopyranosyl)-3,4,5-trimethoxybenzyl alcohol derivative. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2003.10.006
• 作为产物：
  描述：

  pent-4-enyl 3,4,6-tri-O-benzyl-α-D-mannopyranoside 在 iodonium di(2,4,6-trimethylpyridine) perchlorate 作用下， 以 二氯甲烷 为溶剂， 反应 3.0h， 生成 (2R,3R,4R,4aR,10bR)-7-iodo-8,10-dimethoxy-3,4-bis(phenylmethoxy)-2-(phenylmethoxymethyl)-2,3,4,4a,6,10b-hexahydropyrano[3,2-c]isochromene
  参考文献：
  名称：

  Intramolecular C-glycosylation of 2-O-benzylated pentenyl mannopyranosides: remarkable 1,2-trans stereoselectivity

  摘要：

  The IDCP-promoted intramolecular C-glycosylation of pentenyl alpha-mannopyranosides carrying, at O-2, an activated benzyl group gave, unexpectedly, the 1,2-trans-fused bicyclic product which corresponds to an alpha-C-aryl mannopyranose derivative. This remarkable, strained C-glycosyl compound was rapidly epimerized to the more stable 1,2-cis product on treatment with BF3.Et2O. The IDCP-reaction product could be elaborated into a 2-(alpha-C-mannopyranosyl)-3,4,5-trimethoxybenzyl alcohol derivative. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2003.10.006