(4aS,7R,9aS)-7-bromo-6,6,9a-trimethyl-4a,7,8,9-tetrahydro-4H-[1,3]dioxino[5,4-b]oxepin-2-one | 1437117-96-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 氧杂环己烷
• 英文名称: (4aS,7R,9aS)-7-bromo-6,6,9a-trimethyl-4a,7,8,9-tetrahydro-4H-[1,3]dioxino[5,4-b]oxepin-2-one
• CAS: 1437117-96-8
• 化学式: C₁₁H₁₇BrO₄
• 分子量: 293.158
• InChiKey: ABDYBBXBXTVXSO-FYBVGQRMSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  16
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.91
• 拓扑面积：
  44.8
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (4aS,7R,9aS)-7-bromo-6,6,9a-trimethyl-4a,7,8,9-tetrahydro-4H-[1,3]dioxino[5,4-b]oxepin-2-one 在 三氧化硫吡啶 、 potassium carbonate 、 三乙胺 、 sodium hydroxide 作用下， 以 甲醇 、 二甲基亚砜 为溶剂， 反应 26.0h， 生成 (2S,3S,6R)-6-bromo-2-ethynyl-3,7,7-trimethyloxepan-3-ol
  参考文献：
  名称：

  Total syntheses of the squalene-derived halogenated polyethers ent -dioxepandehydrothyrsiferol and armatol A via bromonium- and Lewis acid-initiated epoxide-opening cascades

  摘要：

  Herein we describe in full our investigations leading to the first total syntheses of ent-dioxepandehydrothyrsiferol and armatol A. Discovery of a bromonium-initiated epoxide-opening cascade enabled novel tactics for constructing key fragments found in both natural products and have led us to revise the proposed biogeneses. Other common features found in the routes include convergent fragment coupling strategies to assemble the natural products' backbones and the use of epoxide-opening cascades for rapid constructions of the fused polyether subunits. Through de novo synthesis of armatol A, we elucidate the absolute and relative configuration of this natural product. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2013.04.041
• 作为产物：
  描述：

  橙花醇 在 N-甲基咪唑 、 titanium(IV) isopropylate 、 叔丁基过氧化氢 、 L-(+)-酒石酸二乙酯 作用下， 以 癸烷 、 硝基甲烷 、 二氯甲烷 、 甲苯 为溶剂， 反应 4.07h， 生成 (4aS,7R,9aS)-7-bromo-6,6,9a-trimethyl-4a,7,8,9-tetrahydro-4H-[1,3]dioxino[5,4-b]oxepin-2-one 、
  参考文献：
  名称：

  Total syntheses of the squalene-derived halogenated polyethers ent -dioxepandehydrothyrsiferol and armatol A via bromonium- and Lewis acid-initiated epoxide-opening cascades

  摘要：

  Herein we describe in full our investigations leading to the first total syntheses of ent-dioxepandehydrothyrsiferol and armatol A. Discovery of a bromonium-initiated epoxide-opening cascade enabled novel tactics for constructing key fragments found in both natural products and have led us to revise the proposed biogeneses. Other common features found in the routes include convergent fragment coupling strategies to assemble the natural products' backbones and the use of epoxide-opening cascades for rapid constructions of the fused polyether subunits. Through de novo synthesis of armatol A, we elucidate the absolute and relative configuration of this natural product. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2013.04.041