(5S,8R,8aS)-5-Dodec-8-hydroxyoxazolo<3,4-a>piperidin-3-one | 157331-01-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑烷类
• 英文名称: (5S,8R,8aS)-5-Dodec-8-hydroxyoxazolo<3,4-a>piperidin-3-one
• 英文别名: (1S,2R,5S)-5-dodecyl-2-hydroxy-6-aza-8-oxabicyclo<4.3.0>nonan-7-one；(5S,8R,8aS)-5-dodecyl-8-hydroxy-1,5,6,7,8,8a-hexahydro-[1,3]oxazolo[3,4-a]pyridin-3-one
• CAS: 157331-01-6
• 化学式: C₁₉H₃₅NO₃
• 分子量: 325.492
• InChiKey: CTXPOUOSHWMQMF-OKZBNKHCSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6
• 重原子数：
  23
• 可旋转键数：
  11
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.95
• 拓扑面积：
  49.8
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (5S,8R,8aS)-5-Dodec-8-hydroxyoxazolo<3,4-a>piperidin-3-one 在 氢氧化钾 作用下， 以 乙醇 为溶剂， 反应 24.0h， 以80%的产率得到(-)-deoxoprosopinine
  参考文献：
  名称：

  （-）-去氧oprosopinine和（-）-去氧代脯氨酸的立体选择性总合成：钯（O）催化的分子内N-烷基化形成关键哌啶环

  摘要：

  D-葡萄糖衍生的底物21 E的分子内N-烷基化在Pd（O）催化剂和n -Bu 4 NI的存在下以S N 2'模式顺利进行。主要的环化产物2,6-二烷基化哌啶22 t有效地转化为标题生物碱。

  DOI：

  10.1016/s0040-4020(01)85638-6
• 作为产物：
  描述：

  1-溴壬烷 在 palladium on activated charcoal 盐酸 、 正丁基锂 、 氢气 作用下， 以 甲醇 、 甲苯 为溶剂， 反应 52.25h， 生成 (5S,8R,8aS)-5-Dodec-8-hydroxyoxazolo<3,4-a>piperidin-3-one
  参考文献：
  名称：

  Diastereoselective synthesis of 2,5-disubstituted 3-hydroxypyrrolidine and 2,6-disubstituted 3-hydroxypiperidine derivatives by radical cyclisation; synthesis of (+)-bulgecinine and (–)-desoxoprosopinine

  摘要：

  Cyclisation of the O-stannyl ketyl, generated from the aldehyde 17 by reaction with tributyltin hydride in the presence of AIBN, gives the 5-benzyloxymethyl-7-hydroxypyrrolooxazolidin as a diastereoisomeric mixture of 7 alpha-ol 18 and 7 beta-ol 19 (2: 1), with high diastereoselectivity with respect to the 5,7a positions, (+)-Bulgecinine 8 is enantioselectively synthesised by stereospecific reduction of the ketone 20, derived from compounds 18 and 19. In a similar way, cyclisation of compound 40 gives a 2: 1 mixture of compounds 41 and 42. Conversion of compound 41 into (-)-desoxoprosopinine 9 is successfully achieved.

  DOI：

  10.1039/p19960000793

文献信息

• Diastereoselective synthesis of 2,5-disubstituted 3-hydroxypyrrolidine and 2,6-disubstituted 3-hydroxypiperidine derivatives by radical cyclisation; synthesis of (+)-bulgecinine and (–)-desoxoprosopinine
  作者：Yoko Yuasa、Jun Ando、Shiroshi Shibuya

  DOI：10.1039/p19960000793

  日期：——

  Cyclisation of the O-stannyl ketyl, generated from the aldehyde 17 by reaction with tributyltin hydride in the presence of AIBN, gives the 5-benzyloxymethyl-7-hydroxypyrrolooxazolidin as a diastereoisomeric mixture of 7 alpha-ol 18 and 7 beta-ol 19 (2: 1), with high diastereoselectivity with respect to the 5,7a positions, (+)-Bulgecinine 8 is enantioselectively synthesised by stereospecific reduction of the ketone 20, derived from compounds 18 and 19. In a similar way, cyclisation of compound 40 gives a 2: 1 mixture of compounds 41 and 42. Conversion of compound 41 into (-)-desoxoprosopinine 9 is successfully achieved.
• Stereoselective total syntheses of (−)-desoxoprosopinine and (−)-desoxoprosophylline : palladium(O)-catalyzed intramolecular N-alkylation for the key piperidine ring formation
  作者：Ken-ichi Takao、Yuya Nigawara、Emiko Nishino、Izumi Takagi、Koji Maeda、Kin-ichi Tadano、Seiichiro Ogawa

  DOI：10.1016/s0040-4020(01)85638-6

  日期：1994.1

  Intramolecular N-alkylation of D-glucose-derived substrate 21E proceeded in an SN2′ mode smoothly in the presence of a Pd(O)catalyst and n-Bu4NI. The major cyclization product, a 2,6-dialkylated piperidine 22t, was effectively converted into the title alkaloids.

  D-葡萄糖衍生的底物21 E的分子内N-烷基化在Pd（O）催化剂和n -Bu 4 NI的存在下以S N 2'模式顺利进行。主要的环化产物2,6-二烷基化哌啶22 t有效地转化为标题生物碱。