methyl (E)-4-[(2R,3S,4S,4'S,4aR,6S,7R,8R,9S,9aS)-7-hydroxy-3,4,8-trimethyl-4',9-bis(phenylmethoxy)spiro[3,4,4a,6,7,8,9,9a-octahydropyrano[3,2-b]oxepine-2,2'-oxolane]-6-yl]but-2-enoate | 259258-03-2

• 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: methyl (E)-4-[(2R,3S,4S,4'S,4aR,6S,7R,8R,9S,9aS)-7-hydroxy-3,4,8-trimethyl-4',9-bis(phenylmethoxy)spiro[3,4,4a,6,7,8,9,9a-octahydropyrano[3,2-b]oxepine-2,2'-oxolane]-6-yl]but-2-enoate
• CAS: 259258-03-2
• 化学式: C₃₄H₄₄O₈
• 分子量: 580.719
• InChiKey: GAEMZXUPTSHICG-GDUNJDJISA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.8
• 重原子数：
  42
• 可旋转键数：
  10
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.56
• 拓扑面积：
  92.7
• 氢给体数：
  1
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  methyl (E)-4-[(2R,3S,4S,4'S,4aR,6S,7R,8R,9S,9aS)-7-hydroxy-3,4,8-trimethyl-4',9-bis(phenylmethoxy)spiro[3,4,4a,6,7,8,9,9a-octahydropyrano[3,2-b]oxepine-2,2'-oxolane]-6-yl]but-2-enoate 在 4 A molecular sieve 2,6-二甲基吡啶 、 titanium(IV) isopropylate 、 叔丁基过氧化氢 、 sodium periodate 、 四氧化锇 、 pyridine-SO3 complex 、 D-(-)-酒石酸二乙酯 、 camphor-10-sulfonic acid 、 四丁基氟化铵 、 sodium hexamethyldisilazane 、 二异丁基氢化铝 、 N-甲基吗啉氧化物 、 三乙胺 作用下， 以 四氢呋喃 、 异辛烷 、 正己烷 、 二氯甲烷 、 水 、 二甲基亚砜 、 丙酮 、 苯 为溶剂， 反应 14.17h， 生成 benzyl (E)-3-[(1R,3S,4'S,5R,6S,8R,9S,10S,11S,13R,14S,15S)-5-methoxy-9,14,15-trimethyl-4',10-bis(phenylmethoxy)spiro[2,7,12-trioxatricyclo[9.4.0.03,8]pentadecane-13,2'-oxolane]-6-yl]prop-2-enoate
  参考文献：
  名称：

  Stereocontrolled Synthesis of the JKLM Ring Fragment of Ciguatoxin

  摘要：

  A highly stereocontrolled synthesis of the JKLM ring fragment of ciguatoxin has been achieved. The present synthesis starts with methyl 4,6-O-benzylidene-2-deoxy-2-C-methyl-a-D whose configurations and substituents at C2-C5 correspond to those at C46-C49 of ciguatoxin, and involves as the key step base-induced 7-endo selective cyclization of a hydroxy epoxide for the efficient construction of the fully substituted oxepane ring K. Construction of the spiroether ring M was achieved by introduction of an allyl group to the ring L lactone followed by asymmetric dihydroxylation to install the C54 stereogenic center and acid-induced spiroketalization to furnish the protected KLM ring system. Finally, ring J was constructed by the method of Nicolaou to complete the synthesis of the JKLM ring fragment. The synthesis of a carboxylic acid derivative and its conjugation to carrier proteins to give an artificial antigen for development of an immunoassay system for the parent toxin molecule are also reported.

  DOI：

  10.1021/jo990988j
• 作为产物：
  描述：

  [(2R,3S,4S,4'S,4aR,6S,7R,8R,9S,9aS)-7-hydroxy-3,4,8-trimethyl-4',9-bis(phenylmethoxy)spiro[3,4,4a,6,7,8,9,9a-octahydropyrano[3,2-b]oxepine-2,2'-oxolane]-6-yl]methyl 4-methylbenzenesulfonate 在 二异丁基氢化铝 作用下， 以 二氯甲烷 、 二甲基亚砜 、 甲苯 为溶剂， 反应 7.5h， 生成 methyl (E)-4-[(2R,3S,4S,4'S,4aR,6S,7R,8R,9S,9aS)-7-hydroxy-3,4,8-trimethyl-4',9-bis(phenylmethoxy)spiro[3,4,4a,6,7,8,9,9a-octahydropyrano[3,2-b]oxepine-2,2'-oxolane]-6-yl]but-2-enoate
  参考文献：
  名称：

  Stereocontrolled Synthesis of the JKLM Ring Fragment of Ciguatoxin

  摘要：

  A highly stereocontrolled synthesis of the JKLM ring fragment of ciguatoxin has been achieved. The present synthesis starts with methyl 4,6-O-benzylidene-2-deoxy-2-C-methyl-a-D whose configurations and substituents at C2-C5 correspond to those at C46-C49 of ciguatoxin, and involves as the key step base-induced 7-endo selective cyclization of a hydroxy epoxide for the efficient construction of the fully substituted oxepane ring K. Construction of the spiroether ring M was achieved by introduction of an allyl group to the ring L lactone followed by asymmetric dihydroxylation to install the C54 stereogenic center and acid-induced spiroketalization to furnish the protected KLM ring system. Finally, ring J was constructed by the method of Nicolaou to complete the synthesis of the JKLM ring fragment. The synthesis of a carboxylic acid derivative and its conjugation to carrier proteins to give an artificial antigen for development of an immunoassay system for the parent toxin molecule are also reported.

  DOI：

  10.1021/jo990988j

文献信息

• Stereocontrolled Synthesis of the JKLM Ring Fragment of Ciguatoxin
  作者：Makoto Sasaki、Masayuki Inoue、Kuniyuki Takamatsu、Kazuo Tachibana

  DOI：10.1021/jo990988j

  日期：1999.12.1

  A highly stereocontrolled synthesis of the JKLM ring fragment of ciguatoxin has been achieved. The present synthesis starts with methyl 4,6-O-benzylidene-2-deoxy-2-C-methyl-a-D whose configurations and substituents at C2-C5 correspond to those at C46-C49 of ciguatoxin, and involves as the key step base-induced 7-endo selective cyclization of a hydroxy epoxide for the efficient construction of the fully substituted oxepane ring K. Construction of the spiroether ring M was achieved by introduction of an allyl group to the ring L lactone followed by asymmetric dihydroxylation to install the C54 stereogenic center and acid-induced spiroketalization to furnish the protected KLM ring system. Finally, ring J was constructed by the method of Nicolaou to complete the synthesis of the JKLM ring fragment. The synthesis of a carboxylic acid derivative and its conjugation to carrier proteins to give an artificial antigen for development of an immunoassay system for the parent toxin molecule are also reported.