(1R,2R,4S)-7-(tert-butoxycarbonyl)-7-azabicyclo[2.2.1]heptane-2-carboxylic acid benzyl ester | 918411-49-1

• 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: (1R,2R,4S)-7-(tert-butoxycarbonyl)-7-azabicyclo[2.2.1]heptane-2-carboxylic acid benzyl ester
• 英文别名: 2-O-benzyl 7-O-tert-butyl (1R,2R,4S)-7-azabicyclo[2.2.1]heptane-2,7-dicarboxylate
• CAS: 918411-49-1
• 化学式: C₁₉H₂₅NO₄
• 分子量: 331.412
• InChiKey: GPSRDSOKYLOGHB-ARFHVFGLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  24
• 可旋转键数：
  6
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.58
• 拓扑面积：
  55.8
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (1R,2R,4S)-7-(tert-butoxycarbonyl)-7-azabicyclo[2.2.1]heptane-2-carboxylic acid benzyl ester 在 sodium carbonate 、 三氟乙酸 作用下， 以 二氯甲烷 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 15.5h， 生成 7-Azabicyclo[2.2.1]heptane-2,7-dicarboxylic acid,7-(9H-fluoren-9-ylmethyl) 2-(phenylmethyl) ester, (1R,2R,4S)-
  参考文献：
  名称：

  Oligomers of β-amino acid bearing non-planar amides form ordered structures

  摘要：

  In this report, we explore the feasibility of using bicyclic chiral beta-amino acids, (1R,2R,4S)- and (1S,2S,4R)-7-azabicyclo[2.2.1]-heptane-2-carboxylic acid (R-Ah2c and S-Ah2c, respectively), to prepare novel peptides with unique properties. Facile cis-trans isomerization of the non-planar amide bonds of these beta-amino acids should result in great flexibility of the backbone structure of beta-peptides containing them. Indeed, oligomers of these amino acids showed thermostability and characteristic CD absorptions, which were not concentration-dependent, suggesting that the oligomers remained monomeric. The results indicated the formation of self-organized monomeric structures with chain-length-dependent stabilization. Energy calculations suggested that the peptides can take helical structures in which the energy barriers to cis-trans isomerization are greater for the central amide bonds than for the terminal amides. (c) 2006 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2006.09.062
• 作为产物：
  描述：

  7-(tert-butoxycarbonyl)-7-azabicyclo[2.2.1]heptane-2-carboxylic acid 在 4-二甲氨基吡啶 、 lithium hydroxide 、 草酰氯 、 sodium hydride 、 N,N-二甲基甲酰胺 、 N,N'-二环己基碳二亚胺 作用下， 以 四氢呋喃 、 甲醇 、 正己烷 、 二氯甲烷 、 水 为溶剂， 反应 40.0h， 生成 (1R,2R,4S)-7-(tert-butoxycarbonyl)-7-azabicyclo[2.2.1]heptane-2-carboxylic acid benzyl ester
  参考文献：
  名称：

  Oligomers of β-amino acid bearing non-planar amides form ordered structures

  摘要：

  In this report, we explore the feasibility of using bicyclic chiral beta-amino acids, (1R,2R,4S)- and (1S,2S,4R)-7-azabicyclo[2.2.1]-heptane-2-carboxylic acid (R-Ah2c and S-Ah2c, respectively), to prepare novel peptides with unique properties. Facile cis-trans isomerization of the non-planar amide bonds of these beta-amino acids should result in great flexibility of the backbone structure of beta-peptides containing them. Indeed, oligomers of these amino acids showed thermostability and characteristic CD absorptions, which were not concentration-dependent, suggesting that the oligomers remained monomeric. The results indicated the formation of self-organized monomeric structures with chain-length-dependent stabilization. Energy calculations suggested that the peptides can take helical structures in which the energy barriers to cis-trans isomerization are greater for the central amide bonds than for the terminal amides. (c) 2006 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2006.09.062

文献信息

• Visible-Light-Triggered Release of Nitric Oxide from N-Pyramidal Nitrosamines
  作者：Fumika Karaki、Yoji Kabasawa、Takahiro Yanagimoto、Nobuhiro Umeda、Firman、Yasuteru Urano、Tetsuo Nagano、Yuko Otani、Tomohiko Ohwada

  DOI：10.1002/chem.201101427

  日期：2012.1.23

  many organic/inorganic compounds that release nitric oxide (NO) upon photoirradiation (phototriggered caged‐NOs) have been reported, their photoabsorption wavelengths mostly lie in the UV region, because XNO bonds (X=heteroatom and metal) generally have rather strong π‐bond character. Thus, it is intrinsically difficult to generate organic compounds that release NO under visible light irradiation. Herein

  虽然（phototriggered笼-NOS）已经被报道，释放一氧化氮（NO）在光照射许多有机/无机化合物，它们的光吸收波长大多位于紫外区，因为X  NO键（X =杂原子和金属）通常具有相当强大的π键性格。因此，本质上难以产生在可见光照射下释放NO的有机化合物。在此，描述了在可见光照射下释放NO的7-氮杂双环[2.2.1]庚烷的N-锥体亚硝胺衍生物的结构和性质。这些亚硝胺的吸收的红移，这归因于HOMO（N）-LUMO（π*）与N的非平面结构相关联的过渡NO部分使分子能够吸收可见光，从而导致NNO键断裂。因此，这些化合物是先天性有机笼状NO，不会被可见光束缚。