proline allyl ester hydro-p-toluenesulfonate | 88224-07-1

• 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: proline allyl ester hydro-p-toluenesulfonate
• 英文别名: L-proline allyl ester hydrotosylate；pTosOH*H-Pro-OAll；Prolin-allylester Hydrotosylat
• CAS: 88224-07-1
• 化学式: C₇H₈O₃S*C₈H₁₃NO₂
• 分子量: 327.401
• InChiKey: BLLVRAFOVXYZHA-FJXQXJEOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.71
• 重原子数：
  22.0
• 可旋转键数：
  4.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.4
• 拓扑面积：
  92.7
• 氢给体数：
  2.0
• 氢受体数：
  5.0

反应信息

• 作为反应物：
  描述：

  proline allyl ester hydro-p-toluenesulfonate 在 四氯化钛 4-二甲氨基吡啶 、 三乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 14.0h， 生成 N,N'-<(1R,2R,3R,4S)-Bicyclo<2.2.1>hept-5-en-2,3-diyldicarbonyl>-bis<(S)-prolin-allylester>
  参考文献：
  名称：

  Waldmann, Herbert, Liebigs Annalen der Chemie, 1990, # 7, p. 671 - 680

  摘要：

  DOI：
• 作为产物：
  描述：

  对甲苯磺酸 、 烯丙醇 、 L-脯氨酸 以 苯 为溶剂， 以98%的产率得到proline allyl ester hydro-p-toluenesulfonate
  参考文献：
  名称：

  Waldmann, Herbert; Kunz, Horst, Liebigs Annalen der Chemie, 1983, # 10, p. 1712 - 1725

  摘要：

  DOI：

文献信息

• Synthesis of Functional <i>Ras</i> Lipoproteins and Fluorescent Derivatives
  作者：Karsten Kuhn、David J. Owen、Benjamin Bader、Alfred Wittinghofer、Jürgen Kuhlmann、Herbert Waldmann

  DOI：10.1021/ja002723o

  日期：2001.2.1

  protein. Furthermore, a preliminary study on the biological activity of the natural Ras protein derivative (containing the normal farnesyl and palmitoyl lipid residues) has shown full biological activity. This result highlights the usefulness of these compounds as invaluable tools for the study of Ras signal transduction processes and the plasma membrane localization of the Ras proteins.

  对于生物信号转导的研究，获得正确脂化的蛋白质至关重要。此外，获得包含正确蛋白质结构但可能额外携带不同脂质基团或标记（即荧光标签）的生物缀合物，通过这些标记可以在生物系统中追踪蛋白质，可以提供宝贵的试剂。我们在此报告一系列修饰 Ras 蛋白合成技术的发展。这些经过修饰的 Ras 蛋白携带许多不同的天然和非天然脂质残基，并且该过程还扩展为还提供了获得许多荧光标记衍生物的途径。马来酰亚胺基团提供了以特定和有效方式将化学合成的脂肽分子连接到截短形式的 H-Ras 蛋白的关键。此外，对天然 Ras 蛋白衍生物（含有正常法呢基和棕榈酰脂质残基）的生物活性的初步研究已显示出完整的生物活性。这一结果突出了这些化合物作为研究 Ras 信号转导过程和 Ras 蛋白的质膜定位的宝贵工具的有用性。
• Piperidine is preferred to morpholine for Fmoc cleavage in solid phase glycopeptide synthesis as exemplified by preparation of glycopeptides related to HIV gp120 and mucins
  作者：Tatjana Vuljanic、Karl-Erik Bergquist、Henrik Clausen、Sarbari Roy、Jan Kihlberg

  DOI：10.1016/0040-4020(96)00369-9

  日期：1996.6

  deallylation. The derivatives 5 and 8 were used for solid phase synthesis of glycopeptides related to HIV gp120 and mucins. In these syntheses piperidine was found to give efficient Fmoc removal whereas deprotection with morpholine was slow and incomplete for some steps. In contrast to previous concerns β-elimination and epimerization of glycopeptide stereocenters was not encountered when piperidine

  在Tn的抗原[将Fmoc-丝氨酸/苏氨酸（AC的被保护的衍生物3 GalNAcα）-OH，化合物5和8 ]已经制备通过将Fmoc-丝氨酸/苏氨酸- O-烯丙基糖基化与3,4,6-三- ø -乙酰基-2-叠氮基-2-脱氧-D-吡喃半乳糖基氯（2），然后将叠氮基转化为乙酰胺并脱脱甲酰。导数5和8用于固相合成与HIV gp120和粘蛋白有关的糖肽。在这些合成中，发现哌啶可有效去除Fmoc，而吗啉的脱保护作用缓慢且在某些步骤中不完全。与先前的关注相反，当哌啶用于Fmoc脱保护时，没有遇到糖肽立体中心的β-消除和差向异构化。然而，发现对于糖肽而言，其侧链脱保护并从固相切割。
• Synthesis of the palmitoylated and prenylated C-terminal lipopeptides of the human R- and N-Ras proteins
  作者：T. Schmittberger、H. Waldmann

  DOI：10.1016/s0968-0896(98)00251-x

  日期：1999.5

  For the study of biological phenomena influenced by the R- and N-Ras proteins, characteristic peptides which embody the correct lipid modifications of their parent proteins (palmitoyl thioesters, geranylgeranyl thioethers, and farnesyl thioethers), as well as analogues thereof, may serve as efficient tools. For the construction of such acid- and base labile peptide conjugates the allyl ester was developed as C-terminal protecting group. Allyl esters are cleaved selectively and in high yields from lipidated peptides by Pd(0)-mediated allyl transfer to accepting N- or C-nucleophiles like morpholine and N,N-dimethylbarbituric acid. This protecting group technique formed the key step in the synthesis of the characteristic S-palmitoylated and S-isoprenylated C-terminus of human R-Ras and human N-Ras proteins, as well as several analogues thereof. Deprotections are so mild that no undesired side reactions of the lipid conjugates are observed. (C) 1999 Elsevier Science Ltd. All rights reserved.
• Chemoenzymatic Synthesis of N-<i>Ras</i> Lipopeptides
  作者：Edgar Nägele、Michael Schelhaas、Norman Kuder、Herbert Waldmann

  DOI：10.1021/ja9805627

  日期：1998.7.1

  For the study of biological phenomena influenced by the plasma-membrane-bound Ras proteins and other lipidated proteins, characteristic peptides which embody the correct lipid modifications of their parent proteins (palmitoyl thioesters and farnesyl thioethers), as well as analogues thereof, may serve as suitable tools. For the construction of such acid- and base-labile peptide conjugates, the enzyme-labile p-acetoxybenzyloxycarbonyl (AcOZ) urethane blocking group was developed. The acetate moiety within the AcOZ group is easily saponified by treatment with acetyl esterase or lipase. After cleavage of the acetate group the resulting quinone methide spontaneously fragments, resulting in the liberation of the desired peptide or peptide conjugates. This enzymatic protecting group technique formed the key step in the synthesis of the characteristic S-palmitoylated and S-farnesylated C-terminus of the human N-Ras protein. Deprotections are so mild that no undesired side reactions of the lipid conjugates are observed (i.e., no hydrolysis or beta-elimination of the thioester and no acid-mediated attack on the double bonds of the farnesyl group). The combination of enzymatic protecting group techniques with classical chemical methods allowed access to various fluorescent-labeled and differently lipid-modified Rns lipopeptides. Their application in biological experiments enabeled the study of the structural requirements for the acylation of Ras sequence motifs in vivo and gave insight into the subcellular site at which these modifications occur. The results indicate that the plasma membrane is a major site of cellular S-acylation. This supports a mechanism for the selective subcellular localization of lipidated proteins, including the Rns proteins themselves, by kinetic targeting to the plasma membrane.
• Mapping Concentration Profiles within the Diffusion Layer of an Electrode: Application to Redox Catalysis
  作者：Christian Amatore、Cécile Pebay、Onofrio Scialdone、Sabine Szunerits、Laurent Thouin

  DOI：10.1002/1521-3765(20010702)7:13<2940::aid-chem2940>3.0.co;2-u

  日期：2001.7.2

  Catalytic reductions of some aromatic halides were performed at a millimetric electrode with several redox mediators. The resulting concentration profiles were monitored amperometrically by placing an ultramicroelectrode inside the diffusion layer produced at the former electrode. The features of redox catalysis and the subsequent structuring of the diffusion layer were investigated experimentally under steady-state conditions imposed by the spontaneous convection of the solution. The concentration profiles established from the probe measurements were in agreement with our theoretical predictions, based on fast kinetics of redox catalysis. Under these conditions, very similar to preparative electrosynthesis, the diffusion layer separates into two domains where pure diffusion takes place and the concentration profiles therein are mainly linear. We demonstrate that the limit between these two zones does not depend on kinetics, but is rather fixed by the product of the ratio of the bulk concentrations of each species and the ratio of their diffusion coefficients.