N-甲基-L-苯丙氨酸苄酯对甲基苯磺酸盐 | 40298-25-7

• 物质功能分类: 生物化工 - 氨基酸及其衍生物 - 苯丙氨酸类衍生物
• 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
• 中文名称: N-甲基-L-苯丙氨酸苄酯对甲基苯磺酸盐
• 英文名称: N-Me-Phe-Obzl p-Tosylate
• 英文别名: benzyl (2S)-2-(methylamino)-3-phenylpropanoate;4-methylbenzenesulfonic acid
• CAS: 40298-25-7
• 化学式: C₇H₈O₃S*C₁₇H₁₉NO₂
• 分子量: 441.548
• InChiKey: TUDJZSODAYRPLC-NTISSMGPSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.8
• 重原子数：
  31
• 可旋转键数：
  8
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.21
• 拓扑面积：
  101
• 氢给体数：
  2
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  N-甲基-L-苯丙氨酸苄酯对甲基苯磺酸盐 在 palladium on activated charcoal 氢气 、 1-羟基苯并三唑一水物 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 、 N,N-二异丙基乙胺 作用下， 以 乙酸乙酯 、 N,N-二甲基甲酰胺 为溶剂， 反应 56.0h， 生成 Boc-Glyψ(CONCH3)Phe-sarcosine-OBn
  参考文献：
  名称：

  In vitro evaluation of N-methyl amide tripeptidomimetics as substrates for the human intestinal di-/tri-peptide transporter hPEPT1

  摘要：

  oral absorption of tripeptides is generally mediated by the human intestinal di-/tri-peptide transporter, hPEPT1. However, the bioavailability of tripeptides is often limited due to degradation in the GI-tract by various peptidases. The aim of the present study was to evaluate the general application of N-methyl amide bioisosteres as peptide bond replacements in tripeptides in order to decrease degradation by peptidases and yet retain affinity for and transport via hPEPT1. Seven structurally diverse N-methyl amide tripeptidomimetics were selected based on a principal component analysis of structural properties of 6859 N-methyl amide tripeptidomimetics. In vitro extracellular degradation of the selected tripeptidomimetics as well as affinity for and transepithelial transport via hPEPT1 were investigated in Caco-2 cells. Decreased apparent degradation was observed for all tripeptidomimetics compared to the corresponding natural tripeptides. However, affinity for and transepithelial transport via hPEPT1 were only seen for Gly-Sar-Sar, Asn Psi[CONCH3]Phe Psi[CONCH3]Trp, and Gly-Sar-Leu. This implies that tripeptidomimetics originating from tripeptides with neutral side chains are more likely to be substrates for hPEPT1 than tripeptidomimetics with charged side chains. The results of the present study indicate that the N-methyl amide peptide bond replacement approach for increasing bioavailability of tripeptidomimetic drug candidates is not generally applicable to all tripeptides. Nevertheless, retained affinity for and transport via hPEPT1 were shown for three of the evaluated N-methyl amide tripeptidomimetics. (c) 2006 Elsevier B.V All rights reserved.

  DOI：

  10.1016/j.ejps.2006.03.007

文献信息

• Total synthesis of the antifungal cyclic depsipeptides Sch 57697 and aureobasidin A
  作者：Edwin Jao、Alan B Cooper、Dinanath F Rane、Anil K Saksena、Jagdish Desai、James Wang、Viyyoor M Girijavallabhan、Ashit K Ganguly

  DOI：10.1016/0040-4039(96)01199-9

  日期：1996.8

  A novel cyclic depsinonapeptide antifungal 1a (Sch 57697) and its isomer 1b were synthesized by a fragment coupling approach and this methodology was applied to the total synthesis of the natural product aureobasidin A. Synthetic strategies for coupling of N-methyl amino acids with minimal racemization are discussed. Biological evaluation of isomers 1a and 1b demonstrated the importance of chirality

  通过片段偶联法合成了一种新型的环二萘肽抗真菌药1a（Sch 57697）及其异构体1b，并将该方法应用于天然产物aureobasidin A的全合成。以最小外消旋作用偶联N-甲基氨基酸的合成策略讨论。异构体1a和1b的生物学评估证明了在β-羟基-N-甲基缬氨酸（OHMeVal）位置手性的重要性。
• Synthesis and evaluation of backbone/amide-modified analogs of leualacin
  作者：Ming-Kuan Hu、Fu-Chu Yang、Chi-Cheun Chou、Mao-Hsiung Yen

  DOI：10.1016/s0960-894x(99)00038-4

  日期：1999.2

  Leualacin (1), a cyclic depsi-pentapeptide, and its backbone/amide-modified analogs 2-4 were synthesized. Amide analogue 3 exhibited stronger vasodilatory effects. It also strongly inhibited collagen- and arachidonic acid (AA)induced platelet aggregations with IC(50)s of 0.6 mu M and 2.0 mu M, respectively (C) 1999 Elsevier Science Ltd. All rights reserved.