H-Val-Gly-OBzl*HCl | 74221-51-5

• 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: H-Val-Gly-OBzl*HCl
• 英文别名: H-Val-Gly-OBzl.HCl；benzyl 2-[[(2S)-2-amino-3-methylbutanoyl]amino]acetate;hydrochloride
• CAS: 74221-51-5
• 化学式: C₁₄H₂₀N₂O₃*ClH
• 分子量: 300.785
• InChiKey: OCPBLMZEBTZBKB-ZOWNYOTGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.25
• 重原子数：
  20
• 可旋转键数：
  7
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  81.4
• 氢给体数：
  3
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  H-Val-Gly-OBzl*HCl 在 palladium on activated charcoal N-甲基吗啉 、 氢气 、 1-羟基苯并三唑 、 N,N'-二环己基碳二亚胺 作用下， 以 甲醇 、 乙酸乙酯 为溶剂， 25.0~40.0 ℃ 、294.18 kPa 条件下， 反应 100.0h， 生成 Ac-Phe-MeA-MeA-MeA-Val-Gly-OH
  参考文献：
  名称：

  Emerimicins III 和 IV 及其乙基丙氨酸 12 差向异构体。促进化学酶合成及其溶液结构的定性评价

  摘要：

  peptaibol 抗生素，emerimicin III 和 IV（Ac-Phe 1 -MeA 2 -MeA 3 -MeA 4 -Val 5 -Gly 6 -Leu 7 -MeA 8 -MeA 9 - Hyp 10 -Gln 11 -R-EtA 12 -Hyp 13 -Xxx 14 -Phol 15 ，其中 Xxx=Ala for emerimicin III 和 Xxx=MeA for emerimicin IV) 和它们的 EtA 12 差向异构体已经使用包括溶液相片段缩合和最终木瓜蛋白酶介导的偶联的组合方法合成1-6 和 7-15 片段

  DOI：

  10.1021/ja00037a010
• 作为产物：
  描述：

  BOC-缬氨酰-甘氨酸 在 盐酸 、 TEA 、 N,N'-二环己基碳二亚胺 作用下， 以 四氢呋喃 、 1,4-二氧六环 为溶剂， 反应 25.5h， 生成 H-Val-Gly-OBzl*HCl
  参考文献：
  名称：

  Synthesis of a Partial Sequence of Proinsulin Using the A-Chain of Natural Insulin. IV. Synthesis of a Peptide Corresponding to Positions 31–81 of Bovine Proinsulin

  摘要：

  Boc-Arg(Tos)-Arg(Tos)-Glu(OBut)-Val-Glu(OBut)-Gly-Pro-Gln-Val-Gly-N3 与牛脯胰岛素的 41-81 位相对应。通过去除偶联产物中的保护基团并在 QAE-Sephadex A-25 上进行色谱分析，得到了 Arg（Tos）-Arg（Tos）-Glu-Val-Glu-Gly-Pro-Gln-Val-Gly-Ala-Leu-Glu-Leu-Ala-Gly-Gly-Pro-Gla-Gly-Leu-Glu-Gly-Pro-Gln-Lys[Z(2-Cl)]-Arg-A 链的 S-磺酸盐纯品，它对应于牛脯脯氨酸的 31-81 位。

  DOI：

  10.1246/bcsj.53.201

文献信息

• Macrocyclization of Biaryl-Bridged Peptides through Late-Stage Palladium-Catalyzed C(sp²)–H Arylation
  作者：Qingqing Bai、Zengbing Bai、Huan Wang

  DOI：10.1021/acs.orglett.9b02945

  日期：2019.10.18

  Macrocyclic peptides are promising scaffolds of bioactive compounds and clinical therapeutics. Herein, we develop a strategy for the macrocyclization of biaryl-bridged peptides through late-stage Pd-catalyzed C(sp2)–H arylation. This method displays broad substrate scope and high efficiency in the synthesis of peptide conjugates with various bioactive molecules. Furthermore, we applied this method

  大环肽是有前途的生物活性化合物和临床疗法的支架。在本文中，我们开发了通过后期Pd催化的C（sp 2）–H芳基化作用对联芳基桥接的肽进行大环化的策略。该方法在具有各种生物活性分子的肽缀合物的合成中显示了广阔的底物范围和高效率。此外，我们应用这种方法制备了具有芳基-芳基交联键的肽大环。我们的结果表明，主链酰胺基团在Pd催化的C–H肽功能化中作为指导基团的有效性。
• Synthesis and structure of oxetane containing tripeptide motifs
  作者：Nicola H. Powell、Guy J. Clarkson、Rebecca Notman、Piotr Raubo、Nathaniel G. Martin、Michael Shipman

  DOI：10.1039/c4cc03507k

  日期：——

  A new class of peptidomimetic is reported in which one of the amide CO bonds of the peptide backbone is replaced by an oxetane ring. They are synthesised by conjugate addition of various α-amino esters to a 3-(nitromethylene)oxetane, reduction of the nitro group and further coupling with N–Z protected amino acids to grow the peptide chain. Structural insights are provided by X-ray diffraction and molecular dynamics simulations.

  报道了一类新的拟肽化合物，其肽骨架上的一个酰胺CO键被一个氧杂环丁烷环所替代。它们是通过各种α-氨基酯对3-(硝基亚甲基)氧杂环丁烷的共轭加成、硝基的还原以及进一步与N-Z保护的氨基酸耦合来合成并延伸肽链的。结构洞察来自于X射线衍射和分子动力学模拟结果。
• Optimum Cross-linking Spacer Length of Dimeric Neurokinin B Analogs for Interaction with NK-1 Tachykinin Receptors.
  作者：Hiroshi Matsumoto、Yasuyuki Shimohigashi、Yukio Takano、Kazuyasu Sakaguchi、Hiro-o Kamiya、Motonori Ohno

  DOI：10.1246/bcsj.66.196

  日期：——

  A series of dimeric analogs of neurokinin B (NKB) COOH-terminal heptapeptide were synthesized in order to find an optimum length of cross-linking spacer for bivalent interaction with tachykinin receptors. Dimerization was carried out at the NH2-terminus of heptapeptide with succinyl bis[(Gly)n–OH], in which the number of glycine varies from 0 to 4. Dimers D–(Gly)n–NKB4—10, namely succinyl bis[(Gly)n–Asp–Ser–Phe–Val–Gly–Leu–Met–NH2] (n = 0—4), were almost inactive in the assay using rat vas deferens, indicating that they have no interaction with NK-2 receptor subtype. In contrast, these dimers were very active in guinea pig ileum (GPI) containing all of NK-1, 2, and 3 receptors. Relative activity was highest when the cross-linking spacer with oligoglycine of n = 2, and decreased sharply for dimers with shorter and longer chain lengths (n = 0 and 1; 3 and 4). In order to specify receptor subtype (NK-1 or NK-3) in GPI to which dimers bind, dimers were examined under the conditions that NK-1 receptors are desensitized by substance P methyl ester. All dimers exhibited drastically diminished contractile activity, indicating that dimers exclusively interact with NK-1. This was further confirmed by blocking the response of NK-3 receptors with atropine, which had no effect on the contractile activity of dimers. The results suggested that dimers interact bivalently with NK-1 receptors by bridging adjacent two binding sites.

  为寻找与速激肽受体二价相互作用的最佳连接间隔长度，合成了一系列神经激肽B（NKB）羧基端七肽的二聚体类似物。通过琥珀酰双[甘氨酸（n）—OH]在七肽的氨基端进行二聚化，其中甘氨酸的数目从0到4变化。二聚体D–（甘氨酸）n–NKB4—10，即琥珀酰双[甘氨酸（n）–天冬氨酸–丝氨酸–苯丙氨酸–缬氨酸–甘氨酸–亮氨酸–蛋氨酸–NH2]（n = 0—4），在利用大鼠输精管进行的实验中几乎无活性，表明它们与NK-2受体亚型无相互作用。相比之下，这些二聚体在含有所有NK-1、NK-2和NK-3受体的大鼠回肠（GPI）中非常活跃。当连接间隔为n = 2的寡甘氨酸时，相对活性最高，而链长更短和更长的二聚体（n = 0和1；3和4）活性显著降低。为了明确二聚体在GPI中结合的受体亚型（NK-1或NK-3），在NK-1受体被甲酯化的P物质脱敏的条件下检测了二聚体。所有二聚体的收缩活性都急剧降低，表明二聚体专门与NK-1受体相互作用。进一步通过利用阿托品阻断NK-3受体的反应，证实了这一点，阿托品对二聚体的收缩活性没有影响。结果表明，二聚体通过桥接相邻的两个结合位点与NK-1受体发生二价相互作用。
• Amino Acids and Peptides. LIV. Application of 2-Adamantyl Derivatives as Protecting Groups to the Synthesis of Peptide Fragments Related to Sulfolobus solifataricus Ribnuclease. I.
  作者：Yoshio OKADA、Shima JOSHI、Noriyuki SHINTOMI、Yukihiro KONDO、Yuko TSUDA、Kazuko OHGI、Masachika IRIE

  DOI：10.1248/cpb.47.1089

  日期：——

  The 2-adamantyloxycarbonyl group was employed for the protection of the epsilon-amino group of Lys and the hydroxyl group of Tyr, and the 2-adamantyl ester was employed for the protection of the beta-carboxyl group of Asp in order to construct eight peptide segments as building blocks for the preparation of peptide fragments related to the sequence of Sulfolobus solifataricus Ribonuclease. The usefulness

  2-金刚烷基氧羰基用于保护Lys的ε-氨基和Tyr的羟基，2-金刚烷基酯用于保护Asp的β-羧基，以构建八个肽片段作为构建块，用于制备与Sulfolobus solifataricus核糖核酸酶序列有关的肽片段。证实了在我们实验室开发的上述保护基的有用性。
• Structure–CaSR–Activity Relation of <i>Kokumi</i> γ-Glutamyl Peptides
  作者：Yusuke Amino、Masakazu Nakazawa、Megumi Kaneko、Takashi Miyaki、Naohiro Miyamura、Yutaka Maruyama、Yuzuru Eto

  DOI：10.1248/cpb.c16-00293

  日期：——

  activities have been shown to be positively correlated, suggesting that kokumi gamma-glutamyl peptides are perceived through CaSRs in humans. Our research is based on the hypothesis that the discovery of highly active CaSR agonist peptides will lead to the creation of practical kokumi peptides. Through continuous study of the structure-CaSR-activity relation of a large number of gamma-glutamyl peptides, we have

  钙敏感受体（CaSR）的调节是诸如谷胱甘肽（gamma-glutamylcysteinylglycine）等gamma-谷氨酰肽的生理活性之一。γ-谷氨酰肽还具有增香作用，即浓香物质的感官活性，当添加到食品中时，可以改变五种基本口味。这些活性已经显示出正相关，这表明通过人的CaSR可以感知到kokumiγ-谷氨酰胺肽。我们的研究基于以下假设：高活性CaSR激动剂肽的发现将导致创建实用的kokumi肽。通过不断研究大量γ-谷氨酰胺肽的结构-CaSR-活性关系，我们已经确定了强烈的γ-谷氨酰肽的CaSR活性的结构要求如下：-存在N-末端γ-L-谷氨酰基残基；在L-构型的第二个残基处存在中等大小的脂族中性取代基；存在C端羧酸，优选存在甘氨酸作为第三组分。通过使用CaSR活性测定法筛选而选出的γ-谷氨酰肽的感官分析，发现γ-谷氨酰戊基甘氨酸是强效的kokumi肽。此外，含降冰片碱的γ-谷氨酰肽，即