(2R)-2-[(E,3R,4R,6R)-8-[benzyl(dimethyl)silyl]-6-[tert-butyl(dimethyl)silyl]oxy-4-[(3,4-dimethoxyphenyl)methoxymethoxy]-3-methyl-3-triethylsilyloxyoct-1-en-7-ynyl]-2,3-dihydropyran-6-one | 850146-94-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: (2R)-2-[(E,3R,4R,6R)-8-[benzyl(dimethyl)silyl]-6-[tert-butyl(dimethyl)silyl]oxy-4-[(3,4-dimethoxyphenyl)methoxymethoxy]-3-methyl-3-triethylsilyloxyoct-1-en-7-ynyl]-2,3-dihydropyran-6-one
• CAS: 850146-94-0
• 化学式: C₄₅H₇₀O₈Si₃
• 分子量: 823.302
• InChiKey: ATSHWORNXZTKNF-GYFQCQRLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  10.58
• 重原子数：
  56
• 可旋转键数：
  23
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.58
• 拓扑面积：
  81.7
• 氢给体数：
  0
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  (2R)-2-[(E,3R,4R,6R)-8-[benzyl(dimethyl)silyl]-6-[tert-butyl(dimethyl)silyl]oxy-4-[(3,4-dimethoxyphenyl)methoxymethoxy]-3-methyl-3-triethylsilyloxyoct-1-en-7-ynyl]-2,3-dihydropyran-6-one 在 tris(dibenzylideneacetone)dipalladium(0) chloroform complex 、 2,4,6-三异丙基苯磺酰基肼 、 四丁基氟化铵 、 水 、 碳酸氢钠 、 2,3-二氯-5,6-二氰基-1,4-苯醌 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 为溶剂， 反应 22.5h， 生成 5,6-二氢-6-(3,4,6,13-四羟基-3-甲基-1,7,9,11-十三碳四烯基)-2H-吡喃-2-酮
  参考文献：
  名称：

  Dinuclear Asymmetric Zn Aldol Additions:  Formal Asymmetric Synthesis of Fostriecin

  摘要：

  Direct asymmetric aldol reactions constitute a powerful methodology for the efficient synthesis of complex natural products. Herein we report the first application of our recently reported dinuclear Zn-catalyzed direct aldol addition of alkynyl ketones to aldehydes in a short and efficient formal asymmetric synthesis of fostriecin, a potent cyctotoxic natural product. This work highlights not only the power of the aldol methodology but also the utility of the akynyl silane aldol adducts, as it is subsequently utilized in a vinyl silane cross-coupling reaction which affords the target molecule in 14 steps for the longest linear sequence in 8.5% overall yield.

  DOI：

  10.1021/ja042435i
• 作为产物：
  描述：

  3,4-二甲氧基苄醇 在 Grubbs catalyst first generation 、 磺酰氯 、 N-乙基二丙胺 、 氢氟酸 、 sodium hydride 、 N,N-二异丙基乙胺 、 sodium iodide 、 烯丙基溴化镁 作用下， 以 四氢呋喃 、 甲醇 、 乙二醇二甲醚 、 二氯甲烷 、 N,N-二甲基甲酰胺 、 乙腈 为溶剂， 反应 63.66h， 生成 (2R)-2-[(E,3R,4R,6R)-8-[benzyl(dimethyl)silyl]-6-[tert-butyl(dimethyl)silyl]oxy-4-[(3,4-dimethoxyphenyl)methoxymethoxy]-3-methyl-3-triethylsilyloxyoct-1-en-7-ynyl]-2,3-dihydropyran-6-one
  参考文献：
  名称：

  Dinuclear Asymmetric Zn Aldol Additions:  Formal Asymmetric Synthesis of Fostriecin

  摘要：

  Direct asymmetric aldol reactions constitute a powerful methodology for the efficient synthesis of complex natural products. Herein we report the first application of our recently reported dinuclear Zn-catalyzed direct aldol addition of alkynyl ketones to aldehydes in a short and efficient formal asymmetric synthesis of fostriecin, a potent cyctotoxic natural product. This work highlights not only the power of the aldol methodology but also the utility of the akynyl silane aldol adducts, as it is subsequently utilized in a vinyl silane cross-coupling reaction which affords the target molecule in 14 steps for the longest linear sequence in 8.5% overall yield.

  DOI：

  10.1021/ja042435i