Z-(S)-Ala-(S)-Leu-NH2 | 18323-56-3

• 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: Z-(S)-Ala-(S)-Leu-NH2
• 英文别名: Z-L-Ala-L-Leu-NH2；Cbz-Ala-Leu-NH2；Z-Ala-Leu-NH2；Z-L-Ala-L-Leu-NH₂；Cbz-L-Ala-L-Leu-NH2；N-(N-benzyloxycarbonyl-L-alanyl)-L-leucine amide；benzyl N-[(2S)-1-[[(2S)-1-amino-4-methyl-1-oxopentan-2-yl]amino]-1-oxopropan-2-yl]carbamate
• CAS: 18323-56-3
• 化学式: C₁₇H₂₅N₃O₄
• 分子量: 335.403
• InChiKey: RVVQEXKXIZCDGV-JSGCOSHPSA-N

物化性质

• 熔点：
  188-189 °C
• 沸点：
  598.8±45.0 °C(Predicted)
• 密度：
  1.152±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.4
• 重原子数：
  24
• 可旋转键数：
  9
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.47
• 拓扑面积：
  111
• 氢给体数：
  3
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  Z-(S)-Ala-(S)-Leu-NH2 在 palladium on activated charcoal 氢气 作用下， 以 乙醇 为溶剂， 反应 1.5h， 以100%的产率得到(S)-2-((S)-2-aminopropanoylamino)-4-methylpentanoic acid amide
  参考文献：
  名称：

  Design and Synthesis of Potent Inhibitors of the Malaria Aspartyl Proteases Plasmepsin I and II. Use of Solid-Phase Synthesis to Explore Novel Statine Motifs

  摘要：

  Picomolar to low nanomolar inhibitors of the two aspartic proteases plasmepsin (Plm) I and II, from the malaria parasite Plasmodium falciparum, have been identified from sets of libraries containing novel statine-like templates modified at the amino and carboxy terminus. The syntheses of the novel statine templates were carried out in solution phase using efficient synthetic routes and resulting in excellent stereochemical control. The most promising statine template was attached to solid support and diversified by use of parallel synthesis. The products were evaluated for their Plm I and II inhibitory activity as well as their selectivity over cathepsin D. Selected inhibitors were, in addition, evaluated for their inhibition of parasite growth in cultured infected human red blood cells. The most potent inhibitor in this report, compound 16, displays K-i values of 0.5 and 2.2 nM for Plm I and II, respectively. Inhibitor 16 is also effective in attenuating parasite growth in red blood cells showing 51% inhibition at a concentration of 5 muM. Several inhibitors have been identified that exhibit K-i values between 0.5 and 74 nM for both Plm I and II. Some of these inhibitors also show excellent selectivity vs cathepsin D.

  DOI：

  10.1021/jm031106i
• 作为产物：
  描述：

  苄氧羰基-L-丙氨酸 在 α-chymotrypsin immobilised on Celite 、 Tris buffer 、 caesium carbonate 、 三乙胺 作用下， 以 甲醇 、 乙腈 为溶剂， 反应 48.0h， 生成 Z-(S)-Ala-(S)-Leu-NH2
  参考文献：
  名称：

  在动态控制的肽合成中，通过使用氨基甲酰基甲酯作为酰基供体，扩大了α-胰凝乳蛋白酶的底物耐受性

  摘要：

  在动力学控制方法中 肽 通过α-胰凝乳蛋白酶介导的合成，可通过切换蛋白酶来实现蛋白酶底物耐受性的扩大。 酰基供体从常规的甲酯到氨基甲酰基甲酯。因此，作为典型实例，通过使用固有不良的甲基酯获得极低的偶联效率。氨基酸 基质， 翼，通过使用此特殊功能得到了显着改善 酯。在其他氨基酸残基如Gly和Ser的偶联中也观察到其改善作用。羧基 成分。

  DOI：

  10.1039/b004180g

文献信息

• Superiority of the carbamoylmethyl ester as an acyl donor for the kinetically controlled amide-bond formation mediated by α-chymotrypsinElectronic supplementary information (ESI) available: elemental analyses and HPLC separation data. See http://www.rsc.org/suppdata/p1/b1/b108735p/
  作者：Toshifumi Miyazawa、Eiichi Ensatsu、Nobuhiro Yabuuchi、Ryoji Yanagihara、Takashi Yamada

  DOI：10.1039/b108735p

  日期：2002.1.23

  The superiority of the carbamoylmethyl ester as an acyl donor for the α-chymotrypsin-catalysed kinetically controlled peptide-bond formation is demonstrated in the couplings of an inherently poor amino acid substrate, Ala, with various amino acid residues as amino components and in the couplings of non-protein amino acids such as halogenophenylalanines as carboxylic components. Furthermore, this approach is applied to the amide-bond formation between an amino acid residue and a chiral amine, which is highly diastereoselective.

  研究表明，羰甲基氨基甲酸酯作为酰基供体在α-糜蛋白酶催化的动力学控制的肽键形成反应中具有优越性，这体现在天然不良氨基酸底物Ala与各种氨基酸残基作为氨基组分的偶联反应中，以及与非蛋白氨基酸如卤代苯丙氨酸作为羧基组分的偶联反应中。此外，这种方法还应用于氨基酸残基与手性胺之间的酰胺键形成反应，具有高度立体选择性。
• Kinetically Controlled Peptide Synthesis Mediated by Papain Using the Carbamoylmethyl Ester as an Acyl Donor
  作者：Toshifumi Miyazawa、Takao Horimoto、Kayoko Tanaka

  DOI：10.1007/s10989-014-9393-0

  日期：2014.9

  carbamoylmethyl (Cam) esters as acyl donors in the presence of a cysteine protease, papain, immobilized on Celite. Several segment condensations were also achieved generally in high yields without danger of racemization and formation of the secondary-hydrolysis product. Moreover, partial sequences of some bioactive peptides were prepared through segment condensations, and aimed-at peptides were obtained generally

  在固定于硅藻土的半胱氨酸蛋白酶木瓜蛋白酶存在下，通常以高收率合成一系列二肽，其中氨基甲酰基甲基（Cam）酯为酰基供体。通常也以高收率获得数个段的缩合，而没有消旋化和形成二次水解产物的危险。此外，一些生物活性肽的部分序列是通过片段缩合制备的，并且通常以高收率获得了针对性的肽，而没有羧基组分的C-末端残基的外消旋化。因此，在半胱氨酸介导的偶联中再次确定了Cam酯在动力学控制的肽合成中的优越性。 如先前报道的被丝氨酸蛋白酶催化的那些。
• Reverse Proteolysis Promoted by in Situ Generated Peptide Ester Fragments
  作者：Nicole Wehofsky、Norman Koglin、Sven Thust、Frank Bordusa

  DOI：10.1021/ja0344213

  日期：2003.5.1

  The resulting substrate mimetics act as efficient acyl donor components and show the typical behavior of substrate mimicry enabling irreversible reactions with originally nonspecific acyl moieties. Neither a workup of the substrate mimetic intermediate nor changes of the reaction conditions during the whole synthesis process are required. Model peptide syntheses using trypsin, alpha-chymotrypsin, and

  在这篇文章中，我们描述了使用甲基硫酯作为通用前体原位制备蛋白酶特异性反应物的一般合成概念。前体酯很容易通过标准合成程序获得，并可直接用作蛋白酶介导的肽偶联反应的反应物。或者，它们可以作为原位制备各种底物模拟物的初始构建块。后者的合成是通过母体硫酯 (Y-(Xaa)(n)-SMe-->Y-(Xaa)(n)-SR; R: CH(2) CH(2)COOH、CH(2)C(6)H(5)、C(6)H(4)NHC(:NH)NH(2))，它们以顺序方式和平行于随后的酶促反应。所得底物模拟物充当有效的酰基供体组分，并显示出底物模拟的典型行为，能够与最初非特异性的酰基部分发生不可逆反应。在整个合成过程中既不需要底物模拟中间体的后处理，也不需要改变反应条件。使用胰蛋白酶、α-胰凝乳蛋白酶和 V8 蛋白酶作为生物催化剂的模型肽合成证明了该方法的功能，并说明了其对蛋白酶介导反应的合成价值以及该方法与最先进的固相肽的
• Broadening of the substrate tolerance of α-chymotrypsin by using the carbamoylmethyl ester as an acyl donor in kinetically controlled peptide synthesis
  作者：Toshifumi Miyazawa、Kayoko Tanaka、Eiichi Ensatsu、Ryoji Yanagihara、Takashi Yamada

  DOI：10.1039/b004180g

  日期：——

  In the kinetically controlled approach of peptide synthesis mediated by α-chymotrypsin, the broadening of the protease’s substrate tolerance is achieved by switching the acyl donor from the conventional methyl ester to the carbamoylmethyl ester. Thus, as a typical example, the extremely low coupling efficiency obtained by employing the methyl ester of an inherently poor amino acid substrate, Ala, is

  在动力学控制方法中 肽 通过α-胰凝乳蛋白酶介导的合成，可通过切换蛋白酶来实现蛋白酶底物耐受性的扩大。 酰基供体从常规的甲酯到氨基甲酰基甲酯。因此，作为典型实例，通过使用固有不良的甲基酯获得极低的偶联效率。氨基酸 基质， 翼，通过使用此特殊功能得到了显着改善 酯。在其他氨基酸残基如Gly和Ser的偶联中也观察到其改善作用。羧基 成分。
• Mechanoenzymatic peptide and amide bond formation
  作者：José G. Hernández、Karen J. Ardila-Fierro、Deborah Crawford、Stuart L. James、Carsten Bolm

  DOI：10.1039/c7gc00615b

  日期：——

  Mechanochemical chemoenzymatic peptide and amide bond formation catalysed by papain was studied by ball milling. Despite the high-energy mixing experienced inside the ball mill, the biocatalyst proved stable and highly efficient to catalyse the formation of α,α- and α,β-dipeptides. This strategy was further extended to the enzymatic acylation of amines by milling, and to the mechanosynthesis of a derivative

  通过球磨研究了木瓜蛋白酶催化的机械化学化学酶促肽和酰胺键的形成。尽管在球磨机内部经历了高能混合，但是生物催化剂被证明是稳定且高效的，以催化α，α-和α，β-二肽的形成。该策略进一步扩展到通过研磨将胺酶促酰化，并扩展到有价值的二肽L-丙氨酰基-L-谷氨酰胺衍生物的机械合成。