(2R,3R,6R)-6-(carboxymethyl)-3-hydroxy-2-hydroxymethylpiperidine acetonide | 216860-88-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (2R,3R,6R)-6-(carboxymethyl)-3-hydroxy-2-hydroxymethylpiperidine acetonide
• 英文别名: 2-[(4aR,6R,8aR)-2,2-dimethyl-4a,5,6,7,8,8a-hexahydro-4H-[1,3]dioxino[5,4-b]pyridin-6-yl]acetic acid
• CAS: 216860-88-7
• 化学式: C₁₁H₁₉NO₄
• 分子量: 229.276
• InChiKey: LSHIWACHXMAWSG-IWSPIJDZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -2.1
• 重原子数：
  16
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.91
• 拓扑面积：
  67.8
• 氢给体数：
  2
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  (2R,3R,6R)-6-(carboxymethyl)-3-hydroxy-2-hydroxymethylpiperidine acetonide 在 2-氯-1-甲基吡啶碘化物 、 三乙胺 作用下， 以 乙腈 为溶剂， 反应 25.0h， 以53%的产率得到(2R,3R,6R)-8-oxo-3-hydroxy-2-hydroxymethyl-1-azabicyclo[4.2.0]octane acetonide
  参考文献：
  名称：

  Synthesis of Carbacephems from Serine

  摘要：

  Carbacephems have been synthesized from D-serine by two routes involving construction first of the six-membered ring followed by cyclization to give the bicyclic beta-lactam. In one route, alkylation of a lactim ether was accomplished with Ni(Acac)(2) as a catalyst. The desired R stereochemistry at the carbon corresponding to C-6 of the cephem was obtained by stereospecific hydrogenation of a vinylogous carbamate. The second route involved a stereospecific Michael cyclization to give the same C-6 stereochemistry. Closure of a piperidyl beta-amino acid intermediate common to both routes was accomplished using a modified Mukaiyama reagent found to be superior in our system to the traditional reagent. The resulting carbacephem core was stereospecifically substituted at C-7 with an ethyl or amino functionality. The ethylated intermediate was transformed into a stable enol triflate useful for the further elaboration of biologically important carbacephems.

  DOI：

  10.1021/jo980592s
• 作为产物：
  描述：

  (4R,5R)-4-Allyl-2,2-dimethyl-5-<(phenylsulfonyl)amino>-1,3-dioxane 在 吡啶 、 lithium hydroxide 、 硼烷四氢呋喃络合物 、 对羟基联苯 、 四乙基溴化铵 、 双(三甲基硅烷基)氨基钾 、 sodium hydride 、 戴斯-马丁氧化剂 作用下， 以 四氢呋喃 、 甲醇 、 乙二醇二甲醚 、 二氯甲烷 、 水 、 甲苯 、 乙腈 为溶剂， 反应 202.75h， 生成 (2R,3R,6R)-6-(carboxymethyl)-3-hydroxy-2-hydroxymethylpiperidine acetonide
  参考文献：
  名称：

  Synthesis of Carbacephems from Serine

  摘要：

  Carbacephems have been synthesized from D-serine by two routes involving construction first of the six-membered ring followed by cyclization to give the bicyclic beta-lactam. In one route, alkylation of a lactim ether was accomplished with Ni(Acac)(2) as a catalyst. The desired R stereochemistry at the carbon corresponding to C-6 of the cephem was obtained by stereospecific hydrogenation of a vinylogous carbamate. The second route involved a stereospecific Michael cyclization to give the same C-6 stereochemistry. Closure of a piperidyl beta-amino acid intermediate common to both routes was accomplished using a modified Mukaiyama reagent found to be superior in our system to the traditional reagent. The resulting carbacephem core was stereospecifically substituted at C-7 with an ethyl or amino functionality. The ethylated intermediate was transformed into a stable enol triflate useful for the further elaboration of biologically important carbacephems.

  DOI：

  10.1021/jo980592s

文献信息

• Synthesis of Carbacephems from Serine
  作者：James J. Folmer、Carles Acero、Dung L. Thai、Henry Rapoport

  DOI：10.1021/jo980592s

  日期：1998.11.1

  Carbacephems have been synthesized from D-serine by two routes involving construction first of the six-membered ring followed by cyclization to give the bicyclic beta-lactam. In one route, alkylation of a lactim ether was accomplished with Ni(Acac)(2) as a catalyst. The desired R stereochemistry at the carbon corresponding to C-6 of the cephem was obtained by stereospecific hydrogenation of a vinylogous carbamate. The second route involved a stereospecific Michael cyclization to give the same C-6 stereochemistry. Closure of a piperidyl beta-amino acid intermediate common to both routes was accomplished using a modified Mukaiyama reagent found to be superior in our system to the traditional reagent. The resulting carbacephem core was stereospecifically substituted at C-7 with an ethyl or amino functionality. The ethylated intermediate was transformed into a stable enol triflate useful for the further elaboration of biologically important carbacephems.