O-benzyl-L-asparagine | 70328-12-0

• 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: O-benzyl-L-asparagine
• 英文别名: Asn-OBzl；L-asparagine benzyl ester；L-Asparagin-benzylester；Asparagine benzyl ester；benzyl (2S)-2,4-diamino-4-oxobutanoate
• CAS: 70328-12-0
• 化学式: C₁₁H₁₄N₂O₃
• 分子量: 222.244
• InChiKey: COSOUWSZFHWATE-VIFPVBQESA-N

物化性质

• 沸点：
  434.0±40.0 °C(Predicted)
• 密度：
  1.233±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -0.4
• 重原子数：
  16
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  95.4
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  O-benzyl-L-asparagine 生成 Boc-Glu(OcHex)-Asn-OBzl
  参考文献：
  名称：

  MOKOTOFF, MICHAEL;ZHAO, MING;ROTH, STEVEN M.;SHELLEY, JEAN A.;SLAVOSKI, J+, J. MED. CHEM., 33,(1990) N, C. 354-360

  摘要：

  DOI：
• 作为产物：
  描述：

  Boc-L-天冬酰胺苄酯 在 三氟乙酸 作用下， 以 二氯甲烷 为溶剂， 反应 0.5h， 生成 O-benzyl-L-asparagine
  参考文献：
  名称：

  Comparative Metabolomics and Structural Characterizations Illuminate Colibactin Pathway-Dependent Small Molecules

  摘要：

  The gene duster responsible for synthesis of the unknown molecule "colibactin" has been identified in mutualistic and pathogenic Escherichia coli. The pathway endows its producer with a long-term persistence phenotype in the human bowel, a probiotic activity used in the treatment of ulcerative colitis, and a carcinogenic activity under host inflammatory conditions. To date, functional small molecules from this pathway have not been reported. Here we implemented a comparative metabolomics and targeted structural network analyses approach to identify a catalog of small molecules dependent on the colibactin pathway from the meningitis isolate E. coli IHE3034 and the probiotic E. coli Nissle 1917. The structures of 10 pathway-dependent small molecules are proposed based on structural characterizations and network relationships. The network will provide a roadmap for the structural and functional elucidation of a variety of other small molecules encoded by the pathway. From the characterized small molecule set, in vitro bacterial growth inhibitory and mammalian CNS receptor antagonist activities are presented.

  DOI：

  10.1021/ja503450q

文献信息

• A class of novel conjugates of substituted purine and Gly-AA-OBzl: Synthesis and evaluation of orally analgesic activity
  作者：Guifeng Kang、Ming Zhao、Xiaoyi Zhang、Li Peng、Chunbo Li、Wei Mao、Weidong Ye、Shiqi Peng

  DOI：10.1016/j.bmcl.2009.05.077

  日期：2010.10

  five-step-reaction procedure and 19 novel conjugates N-[2-chloro-9-(tetrahydropyran-2-yl)-9H-purin-6-yl]-N-cyclopropylglycylamino acid benzylesters were provided. On mouse-tail flick model their in vivo analgesic activities were assayed. The results indicate that introducing Gly-OC2H5 into the 6-position of the substituted purine leads to ambiguous increase of the analgesic activity, while introducing Gly-AA-OBzl

  针对慢性疼痛的化学疗法，通过五步反应方法和19种新型缀合物N- [2-氯-9-（四氢吡喃-2-）偶联了两种止痛药，取代的嘌呤和Gly-AA-OBzl。提供了（yl）-9 H-嘌呤-6-yl] -N-环丙基糖基氨基酸苄酯。在鼠尾轻弹模型上，测定了它们的体内止痛活性。结果表明，将Gly-OC 2 H 5引入取代的嘌呤的6-位导致镇痛活性的模棱两可的增加，而将Gly-AA-OBzl引入该位置导致镇痛活性的显着增加。
• FACILE AMIDE FORMATION VIA S-NITROSO THIOACID INTERMEDIATES
  申请人：Xian Ming

  公开号：US20120190820A1

  公开（公告）日：2012-07-26

  Provided are methods for forming a reactive S-nitroso thioacid (NTA), comprising nitrosation of a thioacid with a nitrosation reagent. Also provided are methods for: acylating a nucleophile including selective acylation with a high degree of selectivity toward amines over hydroxyls; amide or peptide bond formation; forming a dipeptide or polypeptide; and peptide coupling/ligation, comprising use of thioacid and amine starting materials, wherein the reactions are mediated by very reactive S-nitroso thioacid (NTA) intermediates enabling extremely fast reactions under mild conditions, providing for broad applications.

  提供了形成反应性S-亚硝基硫酸（NTA）的方法，包括使用亚硝基试剂对硫酸进行亚硝基化。还提供了以下方法：酰化亲核试剂，包括对胺的选择性酰化，对羟基的选择性度高；酰胺或肽键形成；形成二肽或多肽；以及肽偶联/连接，包括使用硫酸和胺起始物质，其中反应由非常反应性的S-亚硝基硫酸（NTA）中间体介导，在温和条件下实现极快速的反应，适用于广泛的应用。
• Benzoxazepine compounds, their production and use
  申请人：Yukimasa Hidefumi

  公开号：US20080153801A1

  公开（公告）日：2008-06-26

  This invention provides new benzoxazepine compounds represented by the formula: [wherein R stands for a lower alkyl group optionally substituted with a hydroxyl group, X stands for an optionally substituted carbamoyl group or an optionally substituted heterocyclic group having a deprotonatable hydrogen atom, R 1 stands for a lower alkyl group and W stands for a halogen atom] having activities of lowering chlesterol-level and lowering trigluceride-level, and being useful for prophylaxis and therapy of hyperlipidemia.

  这项发明提供了新的苯并噁唑化合物，其化学式为：[其中R代表可选地取代羟基的低碳基，X代表可选地取代的氨基甲酰基或具有可去质子氢原子的可选地取代的杂环基，R1代表低碳基，W代表卤素原子]，具有降低胆固醇水平和三酰甘油水平的活性，并可用于预防和治疗高脂血症。
• 2,3-Diamino acid modifying 3S-tetrahydroisoquinoline-3-carboxylic acids: Leading to a class of novel agents with highly unfolded conformation, selective in vitro anti-platelet aggregation and potent in vivo anti-thrombotic activity
  作者：Xiaoyi Zhang、Wei Wang、Shenling Cheng、Ming Zhao、Meiqing Zheng、Heng Wei Chang、Jianhui Wu、Shiqi Peng

  DOI：10.1016/j.bmc.2010.01.009

  日期：2010.2

  In the preparation of anti-thrombotic agents the 2- and 3-positions of 3S-tetra-hydroisoquinoline-3-carboxylic acid (THIQA) were simultaneously modified with amino acids to form 20 novel N-(3S-N-amino-acyl-1,2,3,4-tetrahydroisoquinoline-3-carbonyl) amino acids (8a-t). On an in vitro platelet aggregation model 8a-t selectively inhibit ADP-induced platelet aggregation and their IC50 values are leas than 3.5 nM. On an extracorporeal circulation of arterioveinos cannula model of rats both orally and intraveously effective doses of 8a-t are less than 30 nmol/kg. Cerius(2) based stereoview of explores 8a-t having highly unfolded conformation. 3D QSAR analysis gives the importance of the unfolded conformation to high in vitro anti-platelet aggregation and in vivo anti-thrombotic potency rational understanding. (C) 2010 Elsevier Ltd. All rights reserved.
• Benzyl 1,2,3,5,11,11a-hexahydro-3,3-dimethyl-1-oxo-6H-imidazo[3′,4′:1,2]pyridin[3,4-b]indole-2-substituted acetates: One-pot-preparation, anti-tumor activity, docking toward DNA and 3D QSAR analysis
  作者：Jiawang Liu、Ming Zhao、Keduo Qian、Xiaoyi Zhang、Kuo-Hsiung Lee、Jianhui Wu、Yi-Nan Liu、Shiqi Peng

  DOI：10.1016/j.bmc.2010.01.038

  日期：2010.3

  To discover the anti-tumoral indoles a series of benzyl 1,2,3,5,11,11a-hexahydro-3,3-dimethyl-1-oxo-6H-imidazo[3',4':1,2]pyridin[3,4-b]indole-2-substituted acetates (2a-n) are prepared via one-pot-preparation. The IC50 values of 2a-n in vitro against human lung carcinoma, prostate cancer, nasopharyngeal carcinoma, vincristine-resistant KB subline and human breast carcinoma cells range from 40 nM to 60 mu M. On Sarcoma 180 (S180) tumor-bearing mouse model four of them (2e,g,h,i) significantly inhibited the tumor growth. At the dose of 0.1 mg/kg the efficacy of the most potent 2h was equal to that of 1.0 mg/kg of doxorubicin. In contrast to doxorubicin, at 1.0 mg/kg of dose 2e,g,h,i did not induce the treated S180 mice to have organ atrophy and body emaciation. The healthy mice receiving 10, 100 and 500 mg/kg of 2e,g,h,i gave no any neurotoxic response. Even up to the dose of 500 mg/kg the healthy mice occurred no death. The interaction of 2a-n with DNA was confirmed by the fluorescence quenching experiments and automated flexible ligand docking. By 3D QSAR analysis the IC50 values of 2a-n against prostate cancer cells were correlated with the structures and conformations of their side chains. To increase the data related to their physical-chemical properties the experimental Log P values were also provided. (C) 2010 Elsevier Ltd. All rights reserved.