Boc-L-Val-L-pGlu-OH | 504438-63-5

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: Boc-L-Val-L-pGlu-OH
• 英文别名: Boc-Val-Pyr-OH；(2S)-1-[(2S)-3-methyl-2-[(2-methylpropan-2-yl)oxycarbonylamino]butanoyl]-5-oxopyrrolidine-2-carboxylic acid
• CAS: 504438-63-5
• 化学式: C₁₅H₂₄N₂O₆
• 分子量: 328.365
• InChiKey: XMYRFRRZKJMZGH-ONGXEEELSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  23
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.73
• 拓扑面积：
  113
• 氢给体数：
  2
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  H-Aib-L-Ala-OBn 、 Boc-L-Val-L-pGlu-OH 在 N-甲基吗啉 、 1-羟基苯并三唑 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 24.0h， 以58%的产率得到Boc-L-Val-L-pGlu-Aib-L-Ala-OBzl
  参考文献：
  名称：

  Development and Conformational Analysis of a Pseudoproline-Containing Turn Mimic

  摘要：

  The liquid-phase synthesis and the conformational analysis of a small library of fully protected tetramers containing L-pyroglutamic acid (L-pGlu), (4S,5R)-4-methyl-5-carboxybenzyloxazolidin-2-one (L-Oxd), or (4R,5S)-4-methyl-5-carboxybenzyloxazolidin-2-one (D-Oxd) as residue i + 1 are reported to test the tendency of these oligomers to assume beta-hairpin conformation. The most promising molecule is BOC-L-Val-D-Oxd-Gly-L-Ala-OBn, which assumes a preferential beta-turn conformation in CDCl3, as shown by IR and H-1 NMR analysis. These findings have been confirmed by DFT calculations, which provide an interpretation for the available experimental data and agree with the reported observations.

  DOI：

  10.1021/jo026233l
• 作为产物：
  描述：

  Boc-Val-OPfp 在 palladium on activated charcoal 氢气 、 lithium hexamethyldisilazane 作用下， 以 四氢呋喃 、 甲醇 为溶剂， 20.0 ℃ 、303.99 kPa 条件下， 反应 7.33h， 生成 Boc-L-Val-L-pGlu-OH
  参考文献：
  名称：

  Development and Conformational Analysis of a Pseudoproline-Containing Turn Mimic

  摘要：

  The liquid-phase synthesis and the conformational analysis of a small library of fully protected tetramers containing L-pyroglutamic acid (L-pGlu), (4S,5R)-4-methyl-5-carboxybenzyloxazolidin-2-one (L-Oxd), or (4R,5S)-4-methyl-5-carboxybenzyloxazolidin-2-one (D-Oxd) as residue i + 1 are reported to test the tendency of these oligomers to assume beta-hairpin conformation. The most promising molecule is BOC-L-Val-D-Oxd-Gly-L-Ala-OBn, which assumes a preferential beta-turn conformation in CDCl3, as shown by IR and H-1 NMR analysis. These findings have been confirmed by DFT calculations, which provide an interpretation for the available experimental data and agree with the reported observations.

  DOI：

  10.1021/jo026233l

文献信息

• Development and Conformational Analysis of a Pseudoproline-Containing Turn Mimic
  作者：Gianluigi Luppi、Donato Lanci、Valerio Trigari、Marco Garavelli、Andrea Garelli、Claudia Tomasini

  DOI：10.1021/jo026233l

  日期：2003.3.1

  The liquid-phase synthesis and the conformational analysis of a small library of fully protected tetramers containing L-pyroglutamic acid (L-pGlu), (4S,5R)-4-methyl-5-carboxybenzyloxazolidin-2-one (L-Oxd), or (4R,5S)-4-methyl-5-carboxybenzyloxazolidin-2-one (D-Oxd) as residue i + 1 are reported to test the tendency of these oligomers to assume beta-hairpin conformation. The most promising molecule is BOC-L-Val-D-Oxd-Gly-L-Ala-OBn, which assumes a preferential beta-turn conformation in CDCl3, as shown by IR and H-1 NMR analysis. These findings have been confirmed by DFT calculations, which provide an interpretation for the available experimental data and agree with the reported observations.