N^α-[(1,1-dimethylethoxy)carbonyl]-N-methyl-L-leucinamide | 67308-27-4

• 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: N^α-[(1,1-dimethylethoxy)carbonyl]-N-methyl-L-leucinamide
• 英文别名: (S)-(3-methyl-1-methylcarbamoylbutyl)carbamic acid tert-butyl ester；(S)-2-(tert-butoxycarbonylamino)-N,4-dimethylpentanamide；N'-methyl-N-(tert-butoxycarbonyl)-L-leucinamide；Boc-Leu-NHMe；((S)-3-Methyl-1-methylcarbamoyl-butyl)-carbamic acid tert-butyl ester；N-BOC-L-leucine-N-methylamide；1,1-Dimethylethyl N-[(1S)-3-methyl-1-[(methylamino)carbonyl]butyl]carbamate；tert-butyl N-[(2S)-4-methyl-1-(methylamino)-1-oxopentan-2-yl]carbamate
• CAS: 67308-27-4
• 化学式: C₁₂H₂₄N₂O₃
• 分子量: 244.334
• InChiKey: AAZMHUWBYVBUKN-VIFPVBQESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.5
• 重原子数：
  17
• 可旋转键数：
  6
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.83
• 拓扑面积：
  67.4
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  N^α-[(1,1-dimethylethoxy)carbonyl]-N-methyl-L-leucinamide 在 吡啶 、 potassium carbonate 、 对甲苯磺酸 、 N,N-二异丙基乙胺 、 红铝 作用下， 以 乙醚 、 乙醇 、 二氯甲烷 、 水 、 丙酮 、 甲苯 、 乙腈 为溶剂， 反应 18.08h， 生成 C₃₇H₅₉N₃O₆Si
  参考文献：
  名称：

  Biphenyl/diphenyl ether renin inhibitors: Filling the S1 pocket of renin via the S3 pocket

  摘要：

  Structure-based design led to the discovery of a novel class of renin inhibitors in which an unprecedented phenyl ring filling the S1 site is attached to the phenyl ring filling the S3 pocket. Optimization for several parameters including potency in the presence of human plasma, selectivity against CYP3A4 inhibition and improved rat oral bioavailability led to the identification of 8d which demonstrated antihypertensive efficacy in a transgenic rat model of human hypertension. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2011.06.043
• 作为产物：
  描述：

  BOC-L-亮氨酸 在 potassium carbonate 作用下， 以 甲醇 、 N,N-二甲基甲酰胺 为溶剂， 反应 27.0h， 生成 N^α-[(1,1-dimethylethoxy)carbonyl]-N-methyl-L-leucinamide
  参考文献：
  名称：

  稳定 8-氨基喹啉附加肽中的分叉氢键

  摘要：

  酰胺 NH 和前一个残基的酰胺 N 之间的氢键相互作用在含脯氨酸的蛋白质和肽中普遍存在。然而，由于二面角有限，NH−H⋅⋅⋅N 氢键相互作用在非脯氨酰天然肽中很少见。在此，我们通过分叉的 N⋅⋅⋅H⋅⋅⋅N 氢键稳定了 8-氨基喹啉附加的非脯氨酰肽中的这种类型的相互作用。设计、合成了掺入8-氨基喹啉的模型肽2a - i ，并解析了2a - c和2i的晶体结构。晶体数据分析表明，氨基喹啉的酰胺NH-H参与与前面氨基酸残基的氮和喹啉中的氮的分叉氢键相互作用。晶体堆积、赫什菲尔德表面和指纹图的分析证实，分子间 O⋅⋅⋅H 接触对稳定分叉 N⋅⋅⋅H⋅⋅⋅N 氢键相互作用有显着贡献。此外，还进行了NMR实验和CD光谱来检查溶液中的优选构象，并且数据证实了晶体结构构象。

  DOI：

  10.1002/asia.202400248

文献信息

• Modified amino acids
  申请人：Technische Universität Wien

  公开号：EP1826199A1

  公开（公告）日：2007-08-29

  The present invention provides a compound of the general formula 1, wherein X is the connection between the CO-hydrazine and the NR1-oxalic acid or ester group, and uses and synthesis methods. These compounds represent amino acid derivatives, wherein the amine group is turned into an acidic group by the oxalic acid group and the carboxylic acid is turned into an amine functionality by the hydrazine group; as well as peptidomimetics comprising the compound and methods for their synthesis.

  本发明提供了一种一般式1的化合物， 其中X是CO-肼和NR1-草酸或酯基之间的连接，并提供了使用和合成方法。这些化合物代表氨基酸衍生物，其中氨基团通过草酸基转化为酸性基团，羧酸通过肼基转化为氨基功能团；以及包括该化合物的肽类似物和其合成方法。
• Competitive formation of 10- and 7-membered hydrogen-bonded rings of proline-containing model peptides
  作者：Yusuke Jin、Kenji Tonan、Shun-ichi Ikawa

  DOI：10.1016/s1386-1425(02)00031-8

  日期：2002.10

  N-tert-butoxycarbonyl-prolyl-Xaa-NHCH3 [Xaa = Gly (glycyl), Ala (alanyl), Phe (phenylalanyl), Leu (leucyl), Ile (isoleucyl), and Val (valyl)] were studied by proton nuclear magnetic resonance and infrared spectroscopy. Variation of chemical shifts of amide protons with composition change of DMSO-d6/CDCl3 mixed solvents were found to be a good measure of intramolecular hydrogen bonding of peptides in CDCl3

  含有脯氨酸的模型肽的分子内氢键结构，具有序列N-叔丁氧基羰基-脯氨酰基-Xaa-NHCH3 [Xaa =甘氨酸（甘氨酰基），丙氨酸（丙氨酰基），苯丙氨酸（苯丙氨酰基），亮（甘氨酸），胰岛通过异质子核磁共振和红外光谱研究了（异sole基）和Val（戊基）。发现酰胺质子化学位移随DMSO-d6 / CDCl3混合溶剂组成的变化而变化，是衡量CDCl3溶液中肽的分子内氢键的好方法。已经显示，在蛋白质中应分别具有β-和γ-转角样结构的10元和7元氢键合的环彼此竞争地形成。建议两个氢键合的环之间的平衡由Xaa残基的侧链所引起的位阻决定。从化学位移的溶剂组成依赖性变化估计形成10元和7元氢键环的自由能delG10和delG7。已发现deltaG10与蛋白质β转换的第（i + 2）位残基Xaa的出现频率之间具有良好的相关性。
• Diacid Linkers That Promote Parallel β-Sheet Secondary Structure in Water
  作者：Felix Freire、John D. Fisk、Aaron J. Peoples、Monika Ivancic、Ilia A. Guzei、Samuel H. Gellman

  DOI：10.1021/ja802042c

  日期：2008.6.1

  report the development of diacid units that promote formation of a two-stranded parallel beta-sheet secondary structure between peptide segments attached via their N-termini. These linker units are formed by attaching glycine to one carboxyl group of cis-1,2-cyclohexanedicarboxylic acid (CHDA). Parallel sheet formation in water is observed when l-residue strands are attached to the CHDA-Gly unit with either

  我们报告了二酸单位的发展，这些单位促进了通过其 N 总站连接的肽段之间形成双链平行β-折叠二级结构。这些接头单元是通过将甘氨酸连接到顺式 1,2- 环己烷二甲酸 (CHDA) 的一个羧基而形成的。当 L-残基链以两种绝对构型中的任何一种连接到 CHDA-Gly 单元时，在水中观察到平行片形成。
• Influence of Neighboring Groups on the Thermodynamics of Hydrophobic Binding: An Added Complex Facet to the Hydrophobic Effect
  作者：Nader N. Nasief、David Hangauer

  DOI：10.1021/jm401609a

  日期：2014.3.27

  proentropic in others. A remarkable enthalpy–entropy compensation relationship was also observed, reflecting the fact that the hydrophobic effect is governed by the thermodynamic status of the associated aqueous environment. This study could improve our understanding of the hydrophobic effect and may enhance our ability to design potent ligands that are capable of modulating biological processes.

  使用等温滴定量热法（ITC）对在浅疏水口袋中结合的配体侧链进行系统修饰的热力学后果进行了评估，无论是否存在相邻的配体羧酸酯基团。数据显示，羧酸盐可能会通过改变未结合状态和结合状态下水合水的H键/组织状态来显着改变这些修饰的相对热力学特征。发现该羧酸酯基团在某些情况下是前焓的，对熵的，而在另一些情况下是反焓的，对熵的。还观察到了显着的焓-熵补偿关系，这反映了疏水作用受相关水环境的热力学状态支配的事实。
• Design and Synthesis of Sulfur Based Inhibitors of Matrix Metalloproteinase-1.
  作者：Tetsunori Fujisawa、Shinjiro Odake、Yuji Ogawa、Junko Yasuda、Yasuo Morita、Tadanori Morikawa

  DOI：10.1248/cpb.50.239

  日期：——

  Fibroblast collagenase (MMP-1), a member of the matrix metalloproteinases family, is believed to be a pathogenesis of arthritis, by cleaving triple-helical type II collagen in cartilage. From the similarity of the active site zinc binding mode with hydroxamate, we designed and synthesized α-mercaptocarbonyl possessing compounds (3—5), which incorporated various peptide sequences as enzyme recognition sites. The P4–P1 peptide incorporating compound (3) exhibited as potent inhibition as the hydroxamate (1) and the carboxylate (2) type inhibitors, with an IC50 of 10−6 M order against MMP-1. But the inhibitor (3) related compounds (6—8) displayed decreased or no inhibitory potencies. These results suggest that the existence of both the carbonyl and thiol groups might be critical for the inhibition, and the distance between the two functional groups is important for inhibitory potency. For Pn′ peptide incorporating compounds (4a—k), except for 4h and 4k, all compounds showed IC50 values under sub-nanomolar. Among them, for potent inhibition, Leu was better than Phe and Val as the P1′ amino acid, and the P2′ position amino acid was necessary, and preferentially Phe. Insertion of the Pn peptide into 4d or 4k, giving compounds 5a—c, did not increase the activities of 4d and 4k. Substitution of the mercapto group with other functional groups lost the activity of compound 4a. The stereochemical preference at the thiol-attached position was also determined by preparation of both isomers of 4a. It was found that the S configuration compound (36b) is approximately 100 times more potent than the corresponding R-isomer (36a).

  成纤维细胞胶原酶（MMP-1）是基质金属蛋白酶家族的一员，被认为是关节炎的病理机制之一，它通过切割软骨中的三重螺旋II型胶原蛋白发挥作用。基于其活性位点锌结合模式与羟肟酸的相似性，我们设计并合成了含有α-巯基羰基的化合物（3—5），这些化合物包含了作为酶识别位点的不同肽序列。包含P4–P1肽的化合物（3）表现出与羟肟酸（1）和羧酸（2）类型抑制剂相当的强抑制作用，对MMP-1的IC50值为10−6小于M的量级。然而，与抑制剂（3）相关的化合物（6—8）显示出下降或无抑制活性。这些结果表明，羰基和巯基的共存可能对抑制作用至关重要，并且这两个官能团之间的距离对抑制效能也很重要。对于Pn'肽的包含化合物（4a—k），除了4h和4k以外，所有化合物的IC50值均低于亚纳摩尔。其中，在强抑制作用方面，Leu作为P1'氨基酸优于Phe和Val，而P2'位的氨基酸是必要的，并且优先选择Phe。将Pn肽插入4d或4k生成化合物5a—c，并未增加4d和4k的活性。将巯基替换为其他官能团则失去了化合物4a的活性。通过合成4a的两种异构体还确定了在巯基连接位置的立体化学偏好，发现S构型的化合物（36b）的效能约为相应R-异构体（36a）的100倍。