Ala-Ipa hydrochloride | 84851-53-6

• 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: Ala-Ipa hydrochloride
• 英文别名: L-alanyl-isopropylamide hydrochloride；H-Ala-NH-i-Pr hydrochloride；H-Ala-NH-iPr*HCl；(2S)-2-amino-N-propan-2-ylpropanamide;hydrochloride
• CAS: 84851-53-6
• 化学式: C₆H₁₄N₂O*ClH
• 分子量: 166.651
• InChiKey: LWWYTOLUGSYYET-JEDNCBNOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.28
• 重原子数：
  10.0
• 可旋转键数：
  2.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.83
• 拓扑面积：
  55.12
• 氢给体数：
  2.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  Ala-Ipa hydrochloride 在 (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 、 N,N-二异丙基乙胺 、 三氟乙酸 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 生成
  参考文献：
  名称：

  Influence of Silaproline on Peptide Conformation and Bioactivity

  摘要：

  The analogue gamma-(dimethylsila)-proline, denoted silaproline (Sip), was synthesized in both enantiomerically pure forms by diastereoselective alkylation of a chiral glycine equivalent with use of Scholkopf's bis-lactim ether method. The effect of replacing a proline residue in model peptides by this new proline surrogate has been examined in the crystal state by X-ray diffraction and in solution by IR absorption and NMR techniques. Silaproline and proline-containing sequences exhibit very similar conformational properties. Silaproline was also substituted for proline in a neurotensin (8-13) analogue that retained biological activity and exhibited enhanced resistance to biodegradation.

  DOI：

  10.1021/ja017440q
• 作为产物：
  描述：

  Boc-L-Ala-NH-iPr 在 盐酸 作用下， 以 1,4-二氧六环 为溶剂， 以100%的产率得到Ala-Ipa hydrochloride
  参考文献：
  名称：

  Hydrophobic α,α-Disubstituted Disilylated TESDpg Induces Incipient 3₁₀-Helix in Short Tripeptide Sequence

  摘要：

  To evaluate the contribution of triethylsilyl a,a-di-n-propylglycine, namely TESDpg, to induce a defined secondary structure, we have prepared model tripeptides in which TESDpg was inserted in three different positions. Studies in solid state and in solution with adapted techniques showed that TESDpg was able to induce a nascent 310 helix in both crystal and solution states.

  DOI：

  10.1021/acs.orglett.7b01172

文献信息

• Synthesis of analogs of pepstatin. Effect of structure in subsites P1', P2', and P2 on inhibition of porcine pepsin
  作者：Daniel H. Rich、Francesco G. Salituro

  DOI：10.1021/jm00360a022

  日期：1983.6

  A series of pepstatin analogues having structural variations in the P2', P1', and P2 positions have been synthesized and tested for inhibition of porcine pepsin. The standard peptide for this study was Iva-Sta-Val-Ala-Iaa. Structural variations in the P2' and P1' positions have relatively little effect on Ki; however, small variations in the P2 position have a more dramatic effect on Ki and time-dependent

  已经合成了一系列在P2′，P1′和P2位置具有结构变化的胃抑素类似物，并测试了其对猪胃蛋白酶的抑制作用。这项研究的标准肽是Iva-Sta-Val-Ala-Iaa。P2'和P1'位置的结构变化对Ki的影响相对较小；然而，P2位置的微小变化对Ki和时间依赖性抑制具有更显着的影响。还合成了一系列胃抑素片段，并测试了其对猪胃蛋白酶的抑制作用。
• Structural Investigation of “cis” and “trans” Vinylogous Peptides:  <i>cis</i>-Vinylog Turn in Folded <i>cis</i>-Vinylogous Peptides, an Excellent Mimic of the Natural β-Turn
  作者：Claude Grison、Philippe Coutrot、Stéphane Genève、Claude Didierjean、Michel Marraud

  DOI：10.1021/jo051483y

  日期：2005.12.1

  Various sequences of modified peptides including those containing a cis- or trans-vinylogous residue have been studied using X-ray diffraction in the solid state and 1H NMR and IR spectroscopy in solution. A cis-vinylogous residue promotes an NH to CO intramolecular H-bond, closing a nine-membered pseudocycle that stabilizes a folded moiety that we proposed to name the cis-vinylogous turn. A trans-vinylogous

  使用固态X射线衍射以及溶液中的1 H NMR和IR光谱研究了修饰的肽的各种序列，包括那些含有顺式或反式乙烯基残基的肽。甲顺-vinylogous残基促进了NH到CO分子内氢键，关闭九元pseudocycle的稳定，我们提出以命名折叠部分顺-vinylogous转弯。甲反-vinylogous残基涉及伸展构象。两个连续的乙烯基残基保持其自身的结构倾向：“ Xaa tr ”-“ Xaa cis ”或“ Xaa cis ”-“ Xaa tr”“”序列被单折叠，而“ Xaa cis ”-“ Xaa cis ”序列被双折叠。具有全反式或全顺式或交替的顺式-反式基序的寡聚乙烯可能构成新型的折叠剂。
• The couple Pro/AzaPro : A means of β-turn formation control synthesis and conformation of two AzaPro-containing dipeptides
  作者：Alain Lecoq、Guy Boussard、Michel Marraud、André Aubry

  DOI：10.1016/s0040-4039(00)79134-9

  日期：1992.9

  On the basis of two synthesized AzaPro-containing dipeptides. the conformational influence of the azaproline residue (a nitrogen atom is substituted for the Pro-CH(alpha)) on the beta-turn occurrence was tested according to its relative position in the azadipeptide sequence.