methyl 2-{(2R,3R,4R,6S)-6-(2-hydroxyethyl)-4-(triisopropylsilyl)oxy-3-methyl-2H-3,4,5,6-tetrahydropyran-2-yl}acetate | 861118-82-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 氧烷类
• 英文名称: methyl 2-{(2R,3R,4R,6S)-6-(2-hydroxyethyl)-4-(triisopropylsilyl)oxy-3-methyl-2H-3,4,5,6-tetrahydropyran-2-yl}acetate
• 英文别名: methyl 2-[(2R,3R,4R,6S)-6-(2-hydroxyethyl)-3-methyl-4-tri(propan-2-yl)silyloxyoxan-2-yl]acetate
• CAS: 861118-82-3
• 化学式: C₂₀H₄₀O₅Si
• 分子量: 388.62
• InChiKey: GLVLODVOWJKDKY-FCGDIQPGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.29
• 重原子数：
  26
• 可旋转键数：
  10
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.95
• 拓扑面积：
  65
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  methyl 2-{(2R,3R,4R,6S)-6-(2-hydroxyethyl)-4-(triisopropylsilyl)oxy-3-methyl-2H-3,4,5,6-tetrahydropyran-2-yl}acetate 在 戴斯-马丁氧化剂 作用下， 以 二氯甲烷 为溶剂， 反应 1.5h， 以85%的产率得到methyl 2-{(2R,3R,4R,6R)-4-(triisopropylsilyl)oxy-3-methyl-6-(2-oxoethyl)-2H-3,4,5,6-tetrahydropyran-2-yl}acetate
  参考文献：
  名称：

  Total Synthesis of Polycavernoside A, A Lethal Toxin of the Red Alga Polycavernosa tsudai

  摘要：

  Two approaches to the synthesis of the aglycon 120 of polycavernoside A (1) were developed, only one of which was completed. The successful "second-generation" route assembled the aglycon seco acids 102 and 106 via Nozaki-Hiyama-Kishi coupling of aldehyde 70, prepared from methyl (S)3-hydroxy-2-methylpropionate (72) and (S)-pantolactone (73), with vinyl bromide 71. The latter was obtained from a sequence which commenced from the silyl ether 24 of 3-hydroxypropionaldehyde and entailed cyclization of (Z)-zeta -hydroxy-alpha,beta-unsaturated ester 82. Regioselective Yamaguchi lactonization of trihydroxycarboxylic acids 102 and 106 and subsequent functional-group adjustments led to macrolactone 120, to which the fucopyranosylxylopyranoside moiety was attached. Stille coupling of the glycosidated aglycon 128 with dienylstannane 129 furnished polycavernoside A in a synthesis for which the longest linear sequence was 25 steps. The overall yield to lactone 120 was 4.7%.

  DOI：

  10.1021/jo0503862
• 作为产物：
  描述：

  (4S)-4-benzyl-(2S,3R,5S)-3-[7-benzyloxy-5-(tert-butyldimethylsilyl)oxy-3-hydroxy-2-methylheptanoyl]oxazolidin-2-one 在 palladium dihydroxide 2,6-二甲基吡啶 、 18-冠醚-6 、 potassium tert-butylate 、 氢气 、 三甲基铝 、 4-甲基苯磺酸吡啶 、 双(三甲基硅烷基)氨基钾 、 二异丁基氢化铝 作用下， 以 四氢呋喃 、 甲醇 、 正己烷 、 二氯甲烷 、 乙酸乙酯 、 甲苯 为溶剂， 反应 55.0h， 生成 methyl 2-{(2R,3R,4R,6S)-6-(2-hydroxyethyl)-4-(triisopropylsilyl)oxy-3-methyl-2H-3,4,5,6-tetrahydropyran-2-yl}acetate
  参考文献：
  名称：

  Total Synthesis of Polycavernoside A, A Lethal Toxin of the Red Alga Polycavernosa tsudai

  摘要：

  Two approaches to the synthesis of the aglycon 120 of polycavernoside A (1) were developed, only one of which was completed. The successful "second-generation" route assembled the aglycon seco acids 102 and 106 via Nozaki-Hiyama-Kishi coupling of aldehyde 70, prepared from methyl (S)3-hydroxy-2-methylpropionate (72) and (S)-pantolactone (73), with vinyl bromide 71. The latter was obtained from a sequence which commenced from the silyl ether 24 of 3-hydroxypropionaldehyde and entailed cyclization of (Z)-zeta -hydroxy-alpha,beta-unsaturated ester 82. Regioselective Yamaguchi lactonization of trihydroxycarboxylic acids 102 and 106 and subsequent functional-group adjustments led to macrolactone 120, to which the fucopyranosylxylopyranoside moiety was attached. Stille coupling of the glycosidated aglycon 128 with dienylstannane 129 furnished polycavernoside A in a synthesis for which the longest linear sequence was 25 steps. The overall yield to lactone 120 was 4.7%.

  DOI：

  10.1021/jo0503862

文献信息

• Total Synthesis of Polycavernoside A, A Lethal Toxin of the Red Alga <i>Polycavernosa </i><i>t</i><i>sudai</i>
  作者：Paul R. Blakemore、Cindy C. Browder、Jian Hong、Christopher M. Lincoln、Pavel A. Nagornyy、Lonnie A. Robarge、Duncan J. Wardrop、James D. White

  DOI：10.1021/jo0503862

  日期：2005.7.1

  Two approaches to the synthesis of the aglycon 120 of polycavernoside A (1) were developed, only one of which was completed. The successful "second-generation" route assembled the aglycon seco acids 102 and 106 via Nozaki-Hiyama-Kishi coupling of aldehyde 70, prepared from methyl (S)3-hydroxy-2-methylpropionate (72) and (S)-pantolactone (73), with vinyl bromide 71. The latter was obtained from a sequence which commenced from the silyl ether 24 of 3-hydroxypropionaldehyde and entailed cyclization of (Z)-zeta -hydroxy-alpha,beta-unsaturated ester 82. Regioselective Yamaguchi lactonization of trihydroxycarboxylic acids 102 and 106 and subsequent functional-group adjustments led to macrolactone 120, to which the fucopyranosylxylopyranoside moiety was attached. Stille coupling of the glycosidated aglycon 128 with dienylstannane 129 furnished polycavernoside A in a synthesis for which the longest linear sequence was 25 steps. The overall yield to lactone 120 was 4.7%.