Z-Thr-Thr-OMe | 83674-34-4

• 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: Z-Thr-Thr-OMe
• 英文别名: methyl (2S,3R)-3-hydroxy-2-[[(2S,3R)-3-hydroxy-2-(phenylmethoxycarbonylamino)butanoyl]amino]butanoate
• CAS: 83674-34-4
• 化学式: C₁₇H₂₄N₂O₇
• 分子量: 368.387
• InChiKey: IGCCEMHVVQBXOX-RFHZTLPTSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.3
• 重原子数：
  26.0
• 可旋转键数：
  8.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.47
• 拓扑面积：
  134.19
• 氢给体数：
  4.0
• 氢受体数：
  7.0

反应信息

• 作为反应物：
  描述：

  Z-Thr-Thr-OMe 在 一水合肼 作用下， 以 甲醇 为溶剂， 反应 24.0h， 以70%的产率得到Z-Thr-Thr-NHNH2
  参考文献：
  名称：

  Tuftsin analogs: synthesis, structure-function relationships, and implications for specificity of tuftsin's bioactivity

  摘要：

  Thirteen analogues of the natural macrophage activator peptide tuftsin, ten of which are novel, were synthesized with the aim of exploring the relation between their biological potency and their capacity to attach specifically to cellular tuftsin's receptors. The analogues representing modifications and chain extensions at various parts of the parent tuftsin molecule can be classified as N-terminal analogues, C-terminal analogues, "within-chain" derivatives, or dimers of tuftsin and retrotuftsin. The various synthetic routes employed to prepare the analogues are described. A direct correlation was found between the ability of analogues to inhibit [3H-Arg4]tuftsin specific binding to mice peritoneal macrophages and their capacity to enhance phagocytosis or to inhibit tuftsin-mediated phagocytosis by the cells and to potentiate the cell's immune response.

  DOI：

  10.1021/jm00160a027
• 作为产物：
  描述：

  L-苏氨酸甲酯 、 Z-Thr-N3 在 三乙胺 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 44.0h， 生成 Z-Thr-Thr-OMe
  参考文献：
  名称：

  Tuftsin analogs: synthesis, structure-function relationships, and implications for specificity of tuftsin's bioactivity

  摘要：

  Thirteen analogues of the natural macrophage activator peptide tuftsin, ten of which are novel, were synthesized with the aim of exploring the relation between their biological potency and their capacity to attach specifically to cellular tuftsin's receptors. The analogues representing modifications and chain extensions at various parts of the parent tuftsin molecule can be classified as N-terminal analogues, C-terminal analogues, "within-chain" derivatives, or dimers of tuftsin and retrotuftsin. The various synthetic routes employed to prepare the analogues are described. A direct correlation was found between the ability of analogues to inhibit [3H-Arg4]tuftsin specific binding to mice peritoneal macrophages and their capacity to enhance phagocytosis or to inhibit tuftsin-mediated phagocytosis by the cells and to potentiate the cell's immune response.

  DOI：

  10.1021/jm00160a027

文献信息

• Transformation of C-terminal serine and threonine extended precursors into C-terminal .alpha.-amidated peptides: a possible chemical model for the .alpha.-amidating action of pituitary enzymes
  作者：Darshan Ranganathan、Sujata Saini

  DOI：10.1021/ja00003a048

  日期：1991.1

  The chemical model presented here affords a mild and practical methodology for the preparation of C-terminal amides from C-terminal Ser/Thr extended precursors. Further, the oxalamides derived from N-terminal and nonterminal Ser/Thr peptides constitute an entirely novel class of peptide analogues possessing extended planar bis-peptide regions, the study of whose conformational and reactivity profile

  此处介绍的化学模型为从 C 端 Ser/Thr 扩展前体制备 C 端酰胺提供了一种温和实用的方法。此外，源自 N 末端和非末端 Ser/Thr 肽的草酰胺构成了一类全新的肽类似物，具有扩展的平面双肽区域，其构象和反应性特征的研究将证明是有趣的
• Protein Backbone Modification by Novel C.alpha.-C Side-Chain Scission
  作者：Darshan Ranganathan、Narendra K. Vaish、Kavita Shah

  DOI：10.1021/ja00094a008

  日期：1994.7

  alpha-Ketoamide (-NH-CO-CO-) units in intact peptides are generated from Ser/Thr residues via Ru(VIII)catalyzed C-alpha-C side-chain scission. Facets associated with this novel cu-carbon modification have been probed with 75 peptides chosen to represent every possible peptide environment. The reactions were carried out at room temperature with in situ generated Ru(VIII) in biphasic (CH3CN/CCl4/pH 3 phosphate buffer, 1:1:2 v/v) medium. Whereas Ser/Thr residues placed at the C-terminal end in peptides undergo N-C bond scission leading to des-Ser/Thr peptide amides-thus acting as Gly equivalents in simulating the alpha-amidating action of pituitary enzymes-those located at the N-terminal or nonterminal or even at the C-terminal position (protected as amide) were found to undergo oxidative C-C bond scission (involving C-alpha and C side-chain bond), resulting in the generation of alpha-ketoamide (-NH-CO-CO-) units in the intact peptide backbone. The difference in the products arising from C-alpha-C side-chain scission of Ser/Thr esters and amides is rationalized on the basis of a common mechanism involving either oxaloesters [Pep-NH-CO-COX; X = OMe] or oxalamides [X = NH2 or NH-Pep] arising from the oxidation of initially formed carbinolamide intermediates [Pep-NH-CH(OH)-COX],wherein, while the former are shown to undergo hydrolysis to terminal amides [Pep-NH2], the oxalamides are found to be stable to hydrolysis. Ancillary noteworthy findings are those of peptide bond scission when contiguous Ser-Ser/Thr-Thr residues are present and the oxidative cleavage at C-terminal Tyr/Trp sites generating des amides. The oxidative methodology presented here is mild, simple, and practical and proceeds with chiral retention. The insensitivity of a large number of amino acid residues, such as Gly, Ala, Leu, Asn, Gln, Asp, Glu, Pro, Arg, Phe, Lys, Val, and Aib, and N-protecting groups, such as Boc, Z, and Bz, toward Ru(VIII) under the experimental conditions should make this methodology practical and useful. Sulfur-containing amino acids Cys and Met get oxidized to sulfones in the products.
• RANGANATHAN, DARSHAN;SAINI, SUJATA, J. AMER. CHEM. SOC., 113,(1991) N, C. 1042-1044
  作者：RANGANATHAN, DARSHAN、SAINI, SUJATA

  DOI：——

  日期：——