Acetic acid (2S,3R,4S,5R)-5-acetoxy-4-((2S,3S,4R,5R,6S)-5-benzyloxy-3,4-dimethoxy-6-methyl-tetrahydro-pyran-2-yloxy)-2-phenylsulfanyl-tetrahydro-pyran-3-yl ester | 861120-63-0

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: Acetic acid (2S,3R,4S,5R)-5-acetoxy-4-((2S,3S,4R,5R,6S)-5-benzyloxy-3,4-dimethoxy-6-methyl-tetrahydro-pyran-2-yloxy)-2-phenylsulfanyl-tetrahydro-pyran-3-yl ester
• CAS: 861120-63-0
• 化学式: C₃₀H₃₈O₁₀S
• 分子量: 590.692
• InChiKey: QAAOREAUTZJBEE-AGZJGURTSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.74
• 重原子数：
  41.0
• 可旋转键数：
  11.0
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.53
• 拓扑面积：
  107.98
• 氢给体数：
  0.0
• 氢受体数：
  11.0

反应信息

• 作为反应物：
  描述：

  Acetic acid (2S,3R,4S,5R)-5-acetoxy-4-((2S,3S,4R,5R,6S)-5-benzyloxy-3,4-dimethoxy-6-methyl-tetrahydro-pyran-2-yloxy)-2-phenylsulfanyl-tetrahydro-pyran-3-yl ester 在 氢氧化钾 作用下， 以 甲醇 为溶剂， 生成 (2S,3R,4S,5R)-4-((2S,3S,4R,5R,6S)-5-Benzyloxy-3,4-dimethoxy-6-methyl-tetrahydro-pyran-2-yloxy)-2-phenylsulfanyl-tetrahydro-pyran-3,5-diol
  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：

  (2S,3R,4R,5S,6R)-3-Benzyloxy-4,5-dimethoxy-2-methyl-6-phenylsulfanyl-tetrahydro-pyran 在 N-溴代丁二酰亚胺(NBS) 、 silver perchlorate 、 tin(ll) chloride 作用下， 以 乙醚 、 二氯甲烷 为溶剂， 生成 Acetic acid (2S,3R,4S,5R)-5-acetoxy-4-((2S,3S,4R,5R,6S)-5-benzyloxy-3,4-dimethoxy-6-methyl-tetrahydro-pyran-2-yloxy)-2-phenylsulfanyl-tetrahydro-pyran-3-yl ester
  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