{(S)-2-[(2S,3S)-2-(2-tert-Butoxycarbonylamino-acetylamino)-3-methyl-pentanoylamino]-4-methyl-pentanoylamino}-acetic acid | 175444-84-5

• 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: {(S)-2-[(2S,3S)-2-(2-tert-Butoxycarbonylamino-acetylamino)-3-methyl-pentanoylamino]-4-methyl-pentanoylamino}-acetic acid
• CAS: 175444-84-5
• 化学式: C₂₁H₃₈N₄O₇
• 分子量: 458.555
• InChiKey: RCEFXDDDMRLCHQ-ZQIUZPCESA-N

反应信息

• 作为反应物：
  描述：

  {(S)-2-[(2S,3S)-2-(2-tert-Butoxycarbonylamino-acetylamino)-3-methyl-pentanoylamino]-4-methyl-pentanoylamino}-acetic acid 在 氢氟酸 、 (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 、 苯甲醚 、 N,N-二异丙基乙胺 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 3.75h， 生成 (S)-2-[2-((S)-1-{(S)-2-[(S)-2-(2-{(S)-2-[(2S,3S)-2-(2-Amino-acetylamino)-3-methyl-pentanoylamino]-4-methyl-pentanoylamino}-acetylamino)-3-phenyl-propionylamino]-3-methyl-butyrylamino}-2-phenyl-ethylcarbamoyl)-propionylamino]-4-methyl-pentanoic acid
  参考文献：
  名称：

  Partially Modified Retro-Inverso Pseudopeptides as Non-natural Ligands for the Human Class I Histocompatibility Molecule HLA-A2

  摘要：

  Syntheses of a series of partially modified retro-inverso analogues of the antigenic peptide M58-66 derived from the influenza virus matrix protein are reported. The retro-inverso modification Psi(NH-CO) was obtained by replacement of two successive amino acid residues with a 2-substituted malonate derivative and gem-diaminoalkyl residue. The resulting compounds 1-8 were tested for their binding to the human histocompatibility class I molecule HLA-A2 in an assembly assay using lysates of peptide transporter-deficient cells T2. Specific peptide-dependent HLA-A2 assembly was revealed by an enzyme-linked immunosorbent assay. Significant HLA-A2 assembly was detected in the presence of analogues [gGly(58)-(S)mLeu(59)]-M58-66 (1a), [gGly(61)-(R,S)mPhe(62)]M58-66 (4), [gVal(63)-(R,S)mPhe(64)]M58-66 (6), and [gPhe(64)-(R,S)mAla(65)]M58-66 (7). The introduction of the retro-inverso modification between P2-P3, P3-P4, P5-P6, and P8-P9 (compounds 2, 3, 5, and 8, respectively) however led to a dramatic reduction in peptide binding to HLA-A2. Interestingly, compound 1a which contains modification between P1-P2 was found to be the most potent analogue, being able to retain the original HLA-A2 binding profile of the parent peptide M58-66. Taken together, these results and recent binding data obtained in the context of murine MHC class I molecule H-2K(d) suggest that the incorporation of peptide bond surrogates in MHC class I-restricted epitopes is a useful approach to design molecules having both increased stability and high MHC-binding capacity. Depending on their agonist or antagonist effects at the T-cell receptor, such non-natural MHC ligands are likely to find many applications in the development of peptide-based vaccines or as potential therapeutic agents in the treatment of allergies and autoimmune diseases.

  DOI：

  10.1021/jm9509511
• 作为产物：
  描述：

  {(S)-2-[(2S,3S)-2-(2-tert-Butoxycarbonylamino-acetylamino)-3-methyl-pentanoylamino]-4-methyl-pentanoylamino}-acetic acid methyl ester 在 sodium hydroxide 作用下， 以 乙醇 为溶剂， 反应 2.0h， 以92%的产率得到{(S)-2-[(2S,3S)-2-(2-tert-Butoxycarbonylamino-acetylamino)-3-methyl-pentanoylamino]-4-methyl-pentanoylamino}-acetic acid
  参考文献：
  名称：

  Partially Modified Retro-Inverso Pseudopeptides as Non-natural Ligands for the Human Class I Histocompatibility Molecule HLA-A2

  摘要：

  Syntheses of a series of partially modified retro-inverso analogues of the antigenic peptide M58-66 derived from the influenza virus matrix protein are reported. The retro-inverso modification Psi(NH-CO) was obtained by replacement of two successive amino acid residues with a 2-substituted malonate derivative and gem-diaminoalkyl residue. The resulting compounds 1-8 were tested for their binding to the human histocompatibility class I molecule HLA-A2 in an assembly assay using lysates of peptide transporter-deficient cells T2. Specific peptide-dependent HLA-A2 assembly was revealed by an enzyme-linked immunosorbent assay. Significant HLA-A2 assembly was detected in the presence of analogues [gGly(58)-(S)mLeu(59)]-M58-66 (1a), [gGly(61)-(R,S)mPhe(62)]M58-66 (4), [gVal(63)-(R,S)mPhe(64)]M58-66 (6), and [gPhe(64)-(R,S)mAla(65)]M58-66 (7). The introduction of the retro-inverso modification between P2-P3, P3-P4, P5-P6, and P8-P9 (compounds 2, 3, 5, and 8, respectively) however led to a dramatic reduction in peptide binding to HLA-A2. Interestingly, compound 1a which contains modification between P1-P2 was found to be the most potent analogue, being able to retain the original HLA-A2 binding profile of the parent peptide M58-66. Taken together, these results and recent binding data obtained in the context of murine MHC class I molecule H-2K(d) suggest that the incorporation of peptide bond surrogates in MHC class I-restricted epitopes is a useful approach to design molecules having both increased stability and high MHC-binding capacity. Depending on their agonist or antagonist effects at the T-cell receptor, such non-natural MHC ligands are likely to find many applications in the development of peptide-based vaccines or as potential therapeutic agents in the treatment of allergies and autoimmune diseases.

  DOI：

  10.1021/jm9509511