Z-Pro-Ala-OMe | 51782-87-7

• 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-Pro-Ala-OMe
• 英文别名: Benzyloxycarbonylprolyl Alanine Methyl Ester；benzyl (2S)-2-[[(2S)-1-methoxy-1-oxopropan-2-yl]carbamoyl]pyrrolidine-1-carboxylate
• CAS: 51782-87-7
• 化学式: C₁₇H₂₂N₂O₅
• 分子量: 334.372
• InChiKey: WZEHNUMRTRKLTC-JSGCOSHPSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.8
• 重原子数：
  24
• 可旋转键数：
  7
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.47
• 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：

  Z-Pro-Ala-OMe 在 potassium hydroxide 、 盐酸 作用下， 以 甲醇 、 水 为溶剂， 反应 0.25h， 生成 Z-Pro-Ala
  参考文献：
  名称：

  非天然三肽作为Isatins不对称醛醇缩合反应的高度对映选择性有机催化剂

  摘要：

  实现了非天然三肽作为靛红的不对称醛醇缩合反应的高度对映选择性有机催化剂的开发。以d-丙氨酸残基为C末端氨基酸残基的H-Pro-Gly- d -Ala-OH表现出最佳的对映选择性。H-Pro-Gly- d -Ala-OH催化的靛红反应生成的各种羟醛加合物的收率高达93％，ee高达97％。通过DFT计算对过渡态的研究表明，通过d-丙氨酸控制的空间环境实现了高光学纯度。

  DOI：

  10.1016/j.tetlet.2018.12.049
• 作为产物：
  描述：

  氯甲酸苄酯 在 sodium hydroxide 、 1-羟基苯并三唑 、 N,N'-二环己基碳二亚胺 作用下， 以 二氯甲烷 为溶剂， 反应 2.33h， 生成 Z-Pro-Ala-OMe
  参考文献：
  名称：

  几种正苄氧基羰基二肽甲酯和乙酯的碱水解动力学

  摘要：

  系统地研究了合成保护的二肽甲酯和乙酯的碱水解反应速率。从动力学数据计算出活化能，指数前因子和40°C时的参考值。水解速率显示出强烈依赖于序列Gly⪢Ala / Met / Phe⪢Leu⪢Val / Pro的C末端氨基酸。令人惊讶地，N-末端氨基酸也发挥作用，但是顺序不同。N端苯丙氨酸尤其显示出相对加速作用。值得注意的是，与相应的甲酯/甲醇/水相比，乙醇/水中的含甘氨酸的二肽乙酯的酯水解明显更快。

  DOI：

  10.1016/s0040-4020(01)87839-x

文献信息

• Chemical Synthesis of a Heat-stable Enterotoxin Produced by Enterotoxigenic<i>Escherichia coli</i>Strain 18D
  作者：Shoko Yoshimura、Makoto Miki、Haruo Ikemura、Saburo Aimoto、Yasutsugu Shimonishi、Tae Takeda、Yoshifumi Takeda、Toshio Miwatani

  DOI：10.1246/bcsj.57.125

  日期：1984.1

  Two peptides with the two primary structures of 18 amino acid residues proposed for a heat-stable enterotoxin from enterotoxigenic Escherichia coli strain 18D were synthesized by solution methods and their physicochemical and biological properties were compared with those of native toxin. One of these peptides (Asn–Thr–Phe–Tyr–Cys–Cys–Glu–Leu–Cys–Cys–Asn–Pro–Ala–Cys–Ala–Gly–Cys–Tyr) showed the same heat-stability and 1H-NMR spectrum as those of the native toxin and evoked fluid secretion in suckling mice at a dose of 1.5–2.0 ng, which is similar to the effective dose of native toxin. Moreover, its toxicity was neutralized by antisera against the native toxin. The other peptide (Asn–Thr–Phe–Tyr–Cys–Cys–Glu–Leu–Cys–Cys–Tyr–Pro–Ala–Cys–Ala–Gly–Cys–Asn) showed different physicochemical and biological behaviors from those of the native toxin and exhibited toxic activity at a dose of 50–80 ng, which is about thirty times the effective dose of the native toxin. Moreover, its toxicity was not neutralized by antisera against the native toxin. These observations indicate that the former peptide is identical to native toxin but that the latter peptide differs in properties from the native toxin.

  利用溶液法合成了产肠毒素大肠杆菌18D菌株中一种热稳定肠毒素所提出的两种由18个氨基酸残基组成的主要结构肽段，并将其理化性质和生物学性质与天然毒素进行了比较。其中一种肽段（天冬酰胺-苏氨酸-苯丙氨酸-酪氨酸-半胱氨酸-半胱氨酸-谷氨酸-亮氨酸-半胱氨酸-半胱氨酸-天冬酰胺-脯氨酸-丙氨酸-半胱氨酸-丙氨酸-甘氨酸-半胱氨酸-酪氨酸）与天然毒素表现出相同的热稳定性、1H-NMR 谱图，且在 1.5-2.0 ng 剂量下诱发乳鼠分泌液体，这与天然毒素的有效剂量相似。此外，该肽段的毒性可被针对天然毒素的抗血清中和。另一种肽段（天冬酰胺-苏氨酸-苯丙氨酸-酪氨酸-半胱氨酸-半胱氨酸-谷氨酸-亮氨酸-半胱氨酸-半胱氨酸-酪氨酸-脯氨酸-丙氨酸-半胱氨酸-丙氨酸-甘氨酸-半胱氨酸-天冬酰胺）与天然毒素表现出不同的理化性质和生物学行为，其毒性活动所需的剂量为50-80ng，约为天然毒素有效剂量的三十倍。此外，该肽段的毒性不能被针对天然毒素的抗血清中和。这些观察结果表明，前一种肽段与天然毒素相同，但后一种肽段在性质上与天然毒素不同。
• Dynamic combinatorial libraries of hydrazone-linked pseudo-peptides: dependence of diversity on building block structure and chirality
  作者：Jingyuan Liu、Kevin R. West、Chantelle R. Bondy、Jeremy K. M. Sanders

  DOI：10.1039/b617217b

  日期：——

  Expanding on our earlier building block architecture [(MeO)2CH–Linker–Pro–X–NHNH2 where X = Phe, Cha], we have produced a series of new pseudo-dipeptides [(MeO)2CH–Linker–Pro–X–NHNH2 where X = Val, Leu, Ile, Ala] for use in hydrazone-based dynamic combinatorial libraries (DCLs); reverse order analogues [Phe-Pro and Val-Pro] and two enantio-analogues [Pro-Phe and Pro-Val] were also prepared. The behaviours of these building blocks in DCLs, as single components and in mixtures, were studied systematically using HPLC and mass spectrometry in order to gain insight into the relationship between building block structure and good library diversity. Subtle changes in building block structure lead to significant changes in library distribution and in the ability to produce diverse libraries in mixtures.

  基于我们早期的构建模块架构[(MeO)2CH–Linker–Pro–X–NHNH2，其中X = Phe, Cha]，我们合成了一系列新的伪二肽[(MeO)2CH–Linker–Pro–X–NHNH2，其中X = Val, Leu, Ile, Ala]，用于基于脒的动态组合库（DCLs）；反向顺序类似物[Phe-Pro和Val-Pro]以及两种对映异构类似物[Pro-Phe和Pro-Val]也被制备。我们系统地研究了这些构建模块在DCL中的行为，无论是单独成分还是混合物，都使用了高效液相色谱法和质谱法，以深入了解构建模块结构与良好库多样性之间的关系。构建模块结构的细微变化导致了库分布的显著变化以及在混合物中产生多样性库的能力的变化。
• Alkylamides of carboxyalkanoyl peptides and method for preparation
  申请人：Spofa, Spojene podniky pro zdravotnickou vyrobu

  公开号：US04554100A1

  公开（公告）日：1985-11-19

  A method is described for the preparation of novel alkylamides of carboxyalkanoyl peptides of the formula ##STR1## wherein R is an aralky or an alkyl group of 1-5 carbon atoms, A is a residue of peptidically bound proline or alanine, B is a straight bond or a residue of peptidically bound proline or alanine and X is a CH.dbd.CH group or a methylene group of 1-3 carbon atoms. The described compounds are capable of inhibiting elastase.

  描述了一种制备新颖的羧基肽烷酰胺的方法，其化学式为##STR1##，其中R是1-5个碳原子的芳基或烷基基团，A是肽键结合的脯氨酸或丙氨酸残基，B是直链键或肽键结合的脯氨酸或丙氨酸残基，X是CH.dbd.CH基团或1-3个碳原子的亚甲基基团。所述化合物具有抑制弹性酶的能力。
• Unnatural tripeptide as highly enantioselective organocatalyst for asymmetric aldol reaction of isatins
  作者：Kazumasa Kon、Yoshihito Kohari、Miki Murata

  DOI：10.1016/j.tetlet.2018.12.049

  日期：2019.1

  The development of unnatural tripeptides as highly enantioselective organocatalysts for the asymmetric aldol reaction of isatins was achieved. H-Pro-Gly-d-Ala-OH with the d-alanine residue as the C-terminal amino acid residue expressed the best enantioselectivity. The H-Pro-Gly-d-Ala-OH-catalyzed reaction of isatins gave various aldol adducts with up to 93% yield and up to 97% ee. Investigation of the

  实现了非天然三肽作为靛红的不对称醛醇缩合反应的高度对映选择性有机催化剂的开发。以d-丙氨酸残基为C末端氨基酸残基的H-Pro-Gly- d -Ala-OH表现出最佳的对映选择性。H-Pro-Gly- d -Ala-OH催化的靛红反应生成的各种羟醛加合物的收率高达93％，ee高达97％。通过DFT计算对过渡态的研究表明，通过d-丙氨酸控制的空间环境实现了高光学纯度。
• MC-1. A “designer” surfactant engineered for peptide synthesis in water at room temperature
  作者：Margery Cortes-Clerget、Summer E. Spink、Gregory P. Gallagher、Laurent Chaisemartin、Edith Filaire、Jean-Yves Berthon、Bruce H. Lipshutz

  DOI：10.1039/c9gc01050e

  日期：——

  Aqueous micellar catalysis has previously been shown to be an enabling technology for green peptide synthesis. Nonetheless, in response to limitations associated with use of selected amino acids in peptide constructions, a new surfactant has been designed, inspired by the commonplace use of the environmentally egregious dipolar aprotic solvent DMSO. A new amphiphile, MC-1, introduces a highly polar

  胶束水催化作用先前已被证明是绿色肽合成的一项可行技术。然而，响应于在肽结构中使用选定氨基酸的局限性，在环境上令人讨厌的偶极非质子溶剂DMSO的普遍使用的启发下，已经设计了一种新的表面活性剂。新的两亲物MC-1将高极性砜组分引入表面活性剂的非极性区域，从而引入其衍生的纳米胶束的内芯。这不仅导致解决了溶解性问题，而且导致了高收率，易于处理反应混合物以及消除了助溶剂。革兰氏反应也在本文中描述。