Boc-Leu-Pro-O-Me | 68624-06-6

• 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-Leu-Pro-O-Me
• 英文别名: Boc-L-Leu-L-Pro-OMe；Boc-Leu-Pro-OMe；methyl (2S)-1-[(2S)-4-methyl-2-[(2-methylpropan-2-yl)oxycarbonylamino]pentanoyl]pyrrolidine-2-carboxylate
• CAS: 68624-06-6
• 化学式: C₁₇H₃₀N₂O₅
• 分子量: 342.436
• InChiKey: RQWCWDUGWXKMEV-STQMWFEESA-N

物化性质

• 沸点：
  469.1±40.0 °C(Predicted)
• 密度：
  1.103±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  24
• 可旋转键数：
  8
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.82
• 拓扑面积：
  84.9
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  Boc-Leu-Pro-O-Me 在 barium dihydroxide 作用下， 以 甲醇 为溶剂， 生成 丁氧羰基-亮氨酰-羟基化脯氨酸
  参考文献：
  名称：

  B类协同霉素的逐步合成策略

  摘要：

  描述了作为B类协同霉素核心结构的四个大环肽的合成，以及最终的B类衍生物的合成。我们对这些协同霉素衍生物的合成途径允许在大环的所有点上引入氨基酸取代，从而导致结构上多样化的B类类似物。

  DOI：

  10.1016/j.tetlet.2004.01.048
• 作为产物：
  描述：

  L-亮氨酸 在 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 、 sodium hydroxide 作用下， 以 1,4-二氧六环 、 二氯甲烷 、 水 为溶剂， 反应 18.33h， 生成 Boc-Leu-Pro-O-Me
  参考文献：
  名称：

  Zinc(II) complexes of Pro-Gly and Pro-Leu dipeptides: Synthesis, characterization, in vitro DNA binding and cleavage studies

  摘要：

  Dipeptide (Pro-Gly and Pro-Leu) Zinc(II) complexes 1 and 2 were designed and synthesized for potential use as cancer chemotherapeutic agents. In order to augment the DNA recognition of metallonuclease activity, zinc metal ion was tethered to peptide motif to carry out DNA site specific hydrolytic cleavage. The structural formulation of the complexes 1 and 2 was done by elemental analysis, spectroscopic methods (IR, NMR, electronic) and molar conductance measurements. Their in vitro DNA binding profile was investigated by UV-vis titrations, fluorescence titrations and circular dichroism which revealed that these complexes bind to CT DNA by electrostatic interactions via groove binding mode. Zn(II) Pro-Gly complex 1 showed greater binding affinity to CT DNA as compared to the Zn(II) Pro-Leu complex 2 due to steric constraints in the latter. The supercoiled pBR322 DNA cleavage activity of complex 1, ascertained by gel electrophoresis demonstrated efficient DNA cleaving ability via hydrolytic mechanistic pathway. Further, the molecular docking studies confirmed that complex 1 bind to the minor groove of DNA having AT-rich sequences with relative binding energy of -196.72 kJ mol(-1). (c) 2013 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.jphotobiol.2013.07.009

文献信息

• Discovery of Dipeptide-Derived Catalysts for the Enantioselective Addition of Dimethylzinc to Aldehydes
  作者：Seock Yong Kang、Yong Sun Park

  DOI：10.1002/ejoc.201200063

  日期：2012.3

  new class of modular chiral catalysts derived from various amino acid-L-Pro dipeptides was prepared, and the catalysts were tested for their ability to catalyze the enantioselective addition of dimethylzinc to aromatic aldehydes. Dipeptides derived from L-Asp-L-Pro were identified as effective catalysts for the addition at room temperature with up to 97:3 er and 95 % yield.

  制备了一类新的模块化手性催化剂，这些催化剂来源于各种氨基酸-L-Pro 二肽，并测试了催化剂催化二甲基锌对芳香醛的对映选择性加成的能力。源自 L-Asp-L-Pro 的二肽被确定为在室温下添加的有效催化剂，效率高达 97:3，产率为 95%。
• Unambiguous Stereochemical Assignment of Cyclo(Phe-Pro), Cyclo(Leu-Pro), and Cyclo(Val-Pro) by Electronic Circular Dichroic Spectroscopy
  作者：Alison Domzalski、Liliana Margent、Valeria Vigo、Faizunnahar Dewan、Naga Vara Kishore Pilarsetty、Yujia Xu、Akira Kawamura

  DOI：10.3390/molecules26195981

  日期：——

  many microbial cultures. Each of these DKPs has four possible stereoisomers due to the presence of two chirality centers. However, absolute configurations of natural DKPs are often ambiguous due to the lack of a simple, sensitive, and reproducible method for stereochemical assignment. This is an important problem because stereochemistry is a key determinant of biological activity. Here, we report a synthetic

  2,5-二酮哌嗪 (DKP) 是自然界中普遍存在的环状二肽。特别是，在许多微生物培养物中经常检测到环（Phe-Pro）、环（Leu-Pro）和环（Val-Pro）。由于存在两个手性中心，这些 DKP 中的每一个都具有四种可能的立体异构体。然而，由于缺乏简单、灵敏和可重复的立体化学分配方法，天然 DKP 的绝对构型往往不明确。这是一个重要的问题，因为立体化学是生物活性的关键决定因素。在这里，我们报告了一个合成的 DKP 库，其中包含 cyclo(Phe-Pro)、cyclo(Leu-Pro) 和 cyclo(Val-Pro) 的所有立体异构体。使用质谱、核磁共振和电子圆二色谱 (ECD) 对该文库进行光谱表征。事实证明，ECD 可以清楚地区分 DKP 立体异构体。因此，我们的 ECD 数据集可以作为对来自天然来源的环 (Phe-Pro)、环 (Leu-Pro) 和环 (Val-Pro) 样品进行明确立体化学分配的参考。DKP
• Synthesis, Cytotoxic and Antimicrobial Screening of a Proline-Rich Cyclopolypeptide
  作者：Rajiv Dahiya、Akhilesh Kumar、Rajul Gupta

  DOI：10.1248/cpb.57.214

  日期：——

  Present study describes the first total synthesis of a cyclic heptapeptide, stylisin 1 (8) via coupling of tetrapeptide Boc-L-tyrosinyl-L-prolyl-L-leucyl-L-proline-OH and tripeptide L-phenylalanyl-L-isoleucyl-L-proline-OMe followed by cyclization of linear heptapeptide segment. Structure elucidation of synthesized cyclopeptide was done on basis of detailed spectral as well as elemental analysis. From the results of pharmacological screening, it was concluded that cyclopeptide 8 possessed moderate cytotoxicity against Dalton's lymphoma ascites (DLA) and Ehrlich's ascites carcinoma (EAC) cell lines with IC50 (inhibitory concentration, 50%) values of 10.6 and 14.6 μM. Furthermore, cyclopeptide 8 exhibited moderate to good antimicrobial activity against Gram −ve (negative) bacteria Klebsiella pneumoniae and Pseudomonas aeruginosa, dermatophytes and Candida albicans with minimum inhibitory concentration (MIC) of 6 μg/ml.

  本研究描述了首个环七肽stylisin 1（8）的全程合成，通过四肽Boc-L-酪氨酰-L-脯氨酰-L-亮氨酰-L-脯氨酸-OH与三肽L-苯丙氨酰-L-异亮氨酰-L-脯氨酸-OMe的耦合，随后进行线性七肽片段的环化。合成环肽的结构阐明基于详细的谱学及元素分析。从药理筛选结果得出，环肽8对Dalton淋巴瘤腹水（DLA）和Ehrlich腹水癌（EAC）细胞系表现出中等细胞毒性，IC50（抑制浓度，50%）值分别为10.6和14.6 μM。此外，环肽8对革兰氏阴性菌肺炎克雷伯菌和铜绿假单胞菌、皮肤真菌及白色念珠菌表现出中等至良好的抗微生物活性，最小抑制浓度（MIC）为6 μg/ml。
• NOVEL SMALL MOLECULE DNAK INHIBITORS
  申请人：Sturgess Michael Alan

  公开号：US20100087466A1

  公开（公告）日：2010-04-08

  Methods of inhibiting HSP70 proteins, agents causing the inhibition of HSP70 proteins, and the effects of such inhibition on cell proliferation. Anti-microbial agents comprising small molecules, or pharmaceutical salts thereof, disclosed herein and further methods of use thereof are also disclosed. The disclosed small molecules, or pharmaceutical salts thereof, are effective in inhibiting microbial chaperone activity in microbes, such as homologs of HSP70. The disclosed small molecules, or pharmaceutical salts thereof, are also effective for the therapeutic treatment of cancer.

  抑制HSP70蛋白的方法，导致抑制HSP70蛋白的药剂，以及这种抑制对细胞增殖的影响。本文还披露了包含小分子或其药用盐的抗微生物药剂，以及其进一步的使用方法。所披露的小分子或其药用盐对微生物中的分子伴侣活性具有抑制作用，例如HSP70同源物。所披露的小分子或其药用盐还对癌症的治疗治疗有效。
• Antidiabetic<i>in vitro</i>and<i>in vivo</i>evaluation of cyclodipeptides isolated from<i>Pseudomonas fluorescens</i>IB-MR-66e
  作者：M. Lozano-González、B. Ovalle-Magallanes、M. Rangel-Grimaldo、S. De la Torre-Zavala、L. G. Noriega、C. Tovar-Palacio、A. R. Tovar、R. Mata

  DOI：10.1039/c9nj00645a

  日期：——

  Cyclodipeptides cyclo(l-Pro-l-Leu),1; cyclo(l-Pro-l-Val),2; and cyclo (l-Pro-l-Phe),3fromPseudomonas fluorescensIB-MR-66e showed α-glucosidase inhibitory activity.

  环二肽环(l-Pro-l-Leu),1; 环(l-Pro-l-Val),2; 和环(l-Pro-l-Phe),3来自Pseudomonas fluorescensIB-MR-66e，显示出α-葡萄糖苷酶抑制活性。