L-valyl-L-phenylalanine methyl ester | 39614-17-0

• 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: L-valyl-L-phenylalanine methyl ester
• 英文别名: N-L-Valyl-L-phenylalanine methyl ester；(S)-valinyl-(S)-phenylalanine methyl ester；valyl-phenylalanine methyl ester；L-Val-L-PheOMe；NH2Val-PheOCH3；methyl (2S)-2-[[(2S)-2-amino-3-methylbutanoyl]amino]-3-phenylpropanoate
• CAS: 39614-17-0；128557-46-0；145313-30-0
• 化学式: C₁₅H₂₂N₂O₃
• 分子量: 278.351
• InChiKey: PNTFVRVSDUIVFM-STQMWFEESA-N

物化性质

• 熔点：
  195-196 °C
• 沸点：
  446.1±40.0 °C(Predicted)
• 密度：
  1.104±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.4
• 重原子数：
  20
• 可旋转键数：
  7
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.47
• 拓扑面积：
  81.4
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  L-valyl-L-phenylalanine methyl ester 在 三乙胺 作用下， 以 甲醇 为溶剂， 反应 48.0h， 以0.72 mmol的产率得到cyclo(L-Phe-L-Val)
  参考文献：
  名称：

  Structures, Sensory Activity, and Dose/Response Functions of 2,5-Diketopiperazines in Roasted Cocoa Nibs (Theobroma cacao)

  摘要：

  The taste compounds inducing the blood-like, metallic bitter taste sensation reported recently for a dichloromethane extract prepared from roasted cocoa nibs were identified as a series of 25 diketopiperazines by means of HPLC degustation, LC-MS/MS, and independent synthesis. Among these 25 compounds, 13 cis-configured diketopiperazines, namely, CYCIO(L-IIe-L-Phe), CYCIO(L-Val-L-Leu), CYCIO(L-Pro-L-Pro), CYCIO(L-IIe-L-Pro), CYCIO(L-Val-L-Tyr), CYCIO(L-Ala-L-Tyr), CYCIO(L-Phe-L-Ser), CYCIO(L-Ala-L-IIe), CYCIO(L-LeU-L-Phe), cyclo(L-Pro-L-Val), CYCIO(L-Pro-L-Thr), CYCIO(L-PrO-L-Tyr), and CYCIO(L-Val-L-Val) were identified for the first time in cocoa. In addition, the taste recognition thresholds for the metallic as well as the bitter taste of the diketopiperazines were determined, and after quantitative analysis by using two diastereomeric diketopiperazines as the internal standards, the sensory impact of the diketopiperazines was evaluated on the basis of their close-over-threshold (DoT) factors calculated as the ratio of the concentration and the threshold concentration of a compound. These data revealed DoT factors above 1.0 exclusively for cis-cyclo(L-Pro-L-Val), cis-cyclo(L-Val-L-Leu), cis-cyclo(L-Ala-L-IIe), cis-cyclo(L-Ala-L-Leu), and cis-cyclo(L-IIe-L-Pro), whereas all of the other diketopiperazines were present below their individual bitter taste threshold concentrations and should therefore not contribute to the cocoa taste. Because the DoT factors do not consider the nonlinear relationship between the concentration and gustatory response of an individual compound, we, for the first time, report on the recording of dose/response functions describing the human bitter taste perception of diketopiperazines more precisely.

  DOI：

  10.1021/jf051313m
• 作为产物：
  描述：

  Formyl-L-缬氨酸 在 palladium on activated charcoal 盐酸 、 氢气 、 N,N'-二环己基碳二亚胺 作用下， 以 四氢呋喃 为溶剂， 生成 L-valyl-L-phenylalanine methyl ester
  参考文献：
  名称：

  Losse,G.; Nadolski,D., Journal fur praktische Chemie (Leipzig 1954), 1964, vol. 24, p. 118 - 124

  摘要：

  DOI：
• 作为试剂：
  描述：

  phenylalanine-valine 、 三甲基氯硅烷 在 L-valyl-L-phenylalanine methyl ester 作用下， 以 甲醇 为溶剂， 以to give 0.57 g of the desired product的产率得到L-valyl-L-phenylalanine methyl ester
  参考文献：
  名称：

  Retroviral protease inhibitors

  摘要：

  提供了公式I的化合物：##STR1## 其中X、Y、Z、a、b、c、R.sub.1、R.sub.2、R.sub.3、R.sub.4和R.sub.5在说明书中有定义。这些化合物可用作逆转录病毒蛋白酶酶的抑制剂。

  公开号：

  US05430150A1

文献信息

• Sterically Demanding Oxidative Amidation of α-Substituted Malononitriles with Amines Using O₂
  作者：Jing Li、Martin J. Lear、Yujiro Hayashi

  DOI：10.1002/anie.201603399

  日期：2016.7.25

  An efficient amidation method between readily available 1,1-dicyanoalkanes and either chiral or nonchiral amines was realized simply with molecular oxygen and a carbonate base. This oxidative protocol can be applied to both sterically and electronically challenging substrates in a highly chemoselective, practical, and rapid manner. The use of cyclopropyl and thioether substrates support the radical

  简单地使用分子氧和碳酸盐碱即可实现易于获得的1,1-二氰基烷烃与手性或非手性胺之间的高效酰胺化方法。该氧化方案可以高度化学选择性，实用和快速的方式应用于空间和电子挑战性底物。环丙基和硫醚底物的使用可支持α-过氧丙二腈物种的自由基形成，后者可以环化成二恶英，后者可以单价氧化丙二腈α-碳二酮以提供能够与胺亲核试剂反应的活化的酰基氰化物。
• Amino acids and peptides. XXVIII. Synthesis of peptide fragments related to eglin c and studies on the relationship between their structure and effects on human leukocyte elastase, cathepsin G and .ALPHA.-chymotrypsin.
  作者：Satoshi TSUBOI、Kazunori NAKABAYASHI、Yoshikazu MATSUMOTO、Naoki TENO、Yuko TSUDA、Yoshio OKADA、Yoko NAGAMATSU、Junichiro YAMAMOTO

  DOI：10.1248/cpb.38.2369

  日期：——

  Various peptide fragments related to eglin c, which consists of 70 amino acid residues, were synthesized by a conventional solution method and their inhibitory effects on leukocyte elastase, cathepsin G and α-chymotrypsin were examined. Among them, H-Arg-Glu-Tyr-Phe-OMe (eglin c 22-25) and H-Ser-Pro-Val-Thr-Leu-Asp-Leu-Arg-Tyr-OMe (eglin c 41-49) inhibited cathepsin G and α-chymotrypsin but not leukocyte elastase, while H-Thr-Asn-Val-Val-OMe (eglin c 60-63) inhibited leukocyte elastase but not cathepsin G or α-chymotrypsin, although eglin c potently inhibited leukocyte elastase, cathepsin G and α-chymotrypsin. These results indicated that the interaction sites of eglin c with leukocyte elastase, cathepsin G and α-chymotrypsin might be different.

  采用常规的溶液法合成了与来自家蚕血淋巴的抗蛋白酶eglin c（由70个氨基酸残基构成）相关的各种肽片段，并检验了它们对白细胞弹性蛋白酶、组织蛋白酶G和α-胰凝乳蛋白酶的抑制效应。其中，H-Arg-Glu-Tyr-Phe-OMe（eglin c 22-25）和H-Ser-Pro-Val-Thr-Leu-Asp-Leu-Arg-Tyr-OMe（eglin c 41-49）能抑制组织蛋白酶G和α-胰凝乳蛋白酶，但不能抑制白细胞弹性蛋白酶，而H-Thr-Asn-Val-Val-OMe（eglin c 60-63）能抑制白细胞弹性蛋白酶，但不能抑制组织蛋白酶G或α-胰凝乳蛋白酶，尽管eglin c对白细胞弹性蛋白酶、组织蛋白酶G和α-胰凝乳蛋白酶都具有强抑制作用。这些结果提示，eglin c与白细胞弹性蛋白酶、组织蛋白酶G和α-胰凝乳蛋白酶的相互作用部位可能各不相同。
• SMALL MOLECULE MODULATORS OF PCSK9 AND METHODS OF USE THEREOF
  申请人：ADAERATA, LIMITED PARTNERSHIP

  公开号：US20160031935A1

  公开（公告）日：2016-02-04

  A compound of Formula (I): or a pharmaceutically acceptable salt, hydrate, solvate, or racemic mixture or stereoisomer thereof, and methods for preventing or treating an LDL-cholesterol-related disease or disorder using such compound(s), and kits and compositions comprising such compound(s).

  公式（I）的化合物：或其药用可接受的盐、水合物、溶剂合物、或其拉克米混合物或立体异构体，以及使用这种化合物预防或治疗LDL胆固醇相关疾病或紊乱的方法，以及包含这种化合物的试剂盒和组合物。
• Synthesis and biological evaluation of a novel series of curcumin-peptide derivatives as PepT1-mediated transport drugs
  作者：Jiyun Zhang、Hongmei Wen、Fei Shen、Xinzhi Wang、Chenxiao Shan、Chuan Chai、Jian Liu、Wei Li

  DOI：10.1016/j.bioorg.2019.103163

  日期：2019.11

  bioactivities. However its relatively poor solubility limited its absorption and bioavailability. In this study, a novel series of CUR-peptide conjugates were designed and synthesized as PepT1-mediated transport drugs and their solubility, cellular uptakes and anti-tumor activities were evaluated. Ten compounds showed better water solubility than CUR due to the dipeptide moiety. Compared with CUR, compound 5e

  姜黄素（CUR）是姜黄的天然黄色颜料，具有广泛的生物活性。然而，其相对较差的溶解度限制了其吸收和生物利用度。在这项研究中，设计并合成了一系列新的CUR-肽缀合物作为PepT1介导的转运药物，并评估了它们的溶解度，细胞摄取和抗肿瘤活性。由于二肽部分，十种化合物显示出比CUR更好的水溶性。与CUR相比，化合物5e的活性稍好，5d的活性与CUR相似。此外，化合物5d和5e在Caco-2细胞中可完成较高的细胞摄取，并通过添加PepT1典型底物甘氨酰肌氨酸（Gly-Sar）剂量依赖性地抑制。化合物5d和5e改善了PepT1介导的CUR吸收，而没有影响活性。这些新的CUR二肽缀合物可作为未来药物开发的有前途的先导化合物。
• Selektive Spaltung substituierter Phenylsulfenyl-Schutzgruppen bei Peptidsynthesen
  作者：W. Kessler、B. Iselin

  DOI：10.1002/hlca.19660490415

  日期：——

  The selective cleavage of the N-sulphenyl protecting group from amino-acids and peptides containing additional acid-labile protecting residues has been investigated. Among various nucleophilic reagents tested for their ability to effect rapid and specific removal of the N-sulphenyl groups, hydrogen cyanide, sulfurous acid and thioacetamide have been found to be particularly suitable. The application

  已经研究了N-硫苯基保护基团从氨基酸和含有其他酸不稳定保护残基的肽上的选择性裂解。在测试其能快速和特异性去除N-硫苯基的能力的各种亲核试剂中，已经发现氰化氢，亚硫酸和硫代乙酰胺是特别合适的。描述和讨论了该方法在肽的固相合成中的应用。