benzyl (2R,3S)-5-[(tert-butoxycarbonyl)amino]-2,3-dihydroxypentanoate | 1175033-05-2

• 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: benzyl (2R,3S)-5-[(tert-butoxycarbonyl)amino]-2,3-dihydroxypentanoate
• 英文别名: (2R,3S)-benzyl 5-(tert-butoxycarbonylamino)-2,3-dihydroxypentanoate；benzyl (2R,3S)-2,3-dihydroxy-5-[(2-methylpropan-2-yl)oxycarbonylamino]pentanoate
• CAS: 1175033-05-2
• 化学式: C₁₇H₂₅NO₆
• 分子量: 339.389
• InChiKey: FZBUMGCFTISYBP-UONOGXRCSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.4
• 重原子数：
  24
• 可旋转键数：
  10
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.53
• 拓扑面积：
  105
• 氢给体数：
  3
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  benzyl (2R,3S)-5-[(tert-butoxycarbonyl)amino]-2,3-dihydroxypentanoate 在 咪唑 、 甲醇 、 4-二甲氨基吡啶 、 sodium azide 、 4-甲基苯磺酸吡啶 、 tin(ll) chloride 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 、 甲苯 为溶剂， 反应 195.0h， 生成 tert-butyl ((S)-3-((S)-3-(benzyloxy)-5-oxo-2,5-dihydro-1H-pyrrol-2-yl)-3-((triisopropylsilyl)oxy)propyl)carbamate
  参考文献：
  名称：

  Influence of steric parameters on the synthesis of tetramates from α-amino-β-alkoxy-esters and Ph3PCCO

  摘要：

  alpha-Aminoesters react with Ph3PCCO in a domino addition-Wittig cyclization sequence affording enantiomerically pure tetramates. In the case of beta-oxo functionalized alpha-aminoesters, e.g., esters of serine, threonine or beta-hydroxyornithine the yields of this reaction depend heavily on the bulkiness of the beta-OR group and on the configuration of beta-carbon atom C-3. Smaller residues and 2R/3R-configured aminoesters give better yields. The alkoxycarbonyl group of the ester moiety and the residue on the N-atom are less important. These findings can be accounted for by assuming an early puckered transition state for the intramolecular ring-closing Wittig reaction. The addition of sub-stoichiometric amounts of benzoic acid or N-hydroxysuccinimide (for acid-sensitive compounds) is advantageous in some cases as it accelerates the formation of the intermediate amide ylides. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2011.10.099
• 作为产物：
  描述：

  benzyl (2E)-5-[(tert-butoxycarbonyl)amino]pent-2-enoate 在 甲基磺酰胺 、 AD-mix-α 、 水 作用下， 以 叔丁醇 为溶剂， 反应 24.0h， 以6.9 g的产率得到benzyl (2R,3S)-5-[(tert-butoxycarbonyl)amino]-2,3-dihydroxypentanoate
  参考文献：
  名称：

  Influence of steric parameters on the synthesis of tetramates from α-amino-β-alkoxy-esters and Ph3PCCO

  摘要：

  alpha-Aminoesters react with Ph3PCCO in a domino addition-Wittig cyclization sequence affording enantiomerically pure tetramates. In the case of beta-oxo functionalized alpha-aminoesters, e.g., esters of serine, threonine or beta-hydroxyornithine the yields of this reaction depend heavily on the bulkiness of the beta-OR group and on the configuration of beta-carbon atom C-3. Smaller residues and 2R/3R-configured aminoesters give better yields. The alkoxycarbonyl group of the ester moiety and the residue on the N-atom are less important. These findings can be accounted for by assuming an early puckered transition state for the intramolecular ring-closing Wittig reaction. The addition of sub-stoichiometric amounts of benzoic acid or N-hydroxysuccinimide (for acid-sensitive compounds) is advantageous in some cases as it accelerates the formation of the intermediate amide ylides. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2011.10.099

文献信息

• Total Synthesis of (−)- and (+)-Tedanalactam
  作者：Mahesh S. Majik、Perunninakulath S. Parameswaran、Santosh G. Tilve

  DOI：10.1021/jo901143b

  日期：2009.8.21

  The first stereoselective route providing access to both enantiomers of tedanalactam. a naturally occurring piperidone, has been developed. The stereogenic centers were generated by the use of Sharpless asymmetric dihydroxylation. Tandem oxidation-Wittig reaction and one-pot deprotection, lactamization, and oxirane ring formation are the other key elements.
• Influence of steric parameters on the synthesis of tetramates from α-amino-β-alkoxy-esters and Ph3PCCO
  作者：Inga Loke、Natja Park、Karl Kempf、Carsten Jagusch、Rainer Schobert、Sabine Laschat

  DOI：10.1016/j.tet.2011.10.099

  日期：2012.1

  alpha-Aminoesters react with Ph3PCCO in a domino addition-Wittig cyclization sequence affording enantiomerically pure tetramates. In the case of beta-oxo functionalized alpha-aminoesters, e.g., esters of serine, threonine or beta-hydroxyornithine the yields of this reaction depend heavily on the bulkiness of the beta-OR group and on the configuration of beta-carbon atom C-3. Smaller residues and 2R/3R-configured aminoesters give better yields. The alkoxycarbonyl group of the ester moiety and the residue on the N-atom are less important. These findings can be accounted for by assuming an early puckered transition state for the intramolecular ring-closing Wittig reaction. The addition of sub-stoichiometric amounts of benzoic acid or N-hydroxysuccinimide (for acid-sensitive compounds) is advantageous in some cases as it accelerates the formation of the intermediate amide ylides. (C) 2011 Elsevier Ltd. All rights reserved.