L-phenylalanyl-L-leucine benzyl ester | 63649-15-0

• 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: L-phenylalanyl-L-leucine benzyl ester
• 英文别名: benzyl L-phenylalanyl-L-leucinate；H-Phe-leu-obzl；benzyl (2S)-2-[[(2S)-2-amino-3-phenylpropanoyl]amino]-4-methylpentanoate
• CAS: 63649-15-0
• 化学式: C₂₂H₂₈N₂O₃
• 分子量: 368.476
• InChiKey: WHGLYHPTKLTQMK-PMACEKPBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  27
• 可旋转键数：
  10
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  81.4
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  L-phenylalanyl-L-leucine benzyl ester 在 甲烷磺酸 、 1-羟基苯并三唑 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下， 以 二氯甲烷 为溶剂， 反应 51.5h， 生成 Boc-Tyr(Bzl)-Gly-Gly-Phe-Leu-OBzl
  参考文献：
  名称：

  Method of producing peptide

  摘要：

  本发明涉及一种肽的生产方法，其特征在于在缩合反应后将反应混合物与碱接触以在液相肽合成方法中在保持碱性条件的同时水解，直到酸组分的剩余未反应活性酯的比率降至1％或更低。根据本发明，可以通过连续液相合成方法简单高效地生产高纯度的目标肽。此外，本发明涉及一种肽的生产方法，其特征在于在液相肽合成方法中使用与水不相溶的酰胺型溶剂。根据本发明，可以通过液相合成方法生产各种肽，而不受目标肽的氨基酸序列的限制。

  公开号：

  US08716439B2
• 作为产物：
  描述：

  L-苯基丙氨酸叔丁酯 在 氯化亚砜 、 碳酸氢钠 、 4-氨甲基哌啶 、 三氟乙酸 作用下， 以 二氯甲烷 、 苯 为溶剂， 反应 5.0h， 生成 L-phenylalanyl-L-leucine benzyl ester
  参考文献：
  名称：

  Amino-Protecting Groups Subject to Deblocking under Conditions of Nucleophilic Addition to a Michael Acceptor. Structure−Reactivity Studies and Use of the 2-(tert-Butylsulfonyl)-2-propenyloxycarbonyl (Bspoc) Group

  摘要：

  A new type of amino-protecting group is described in which a Michael acceptor is incorporated into the protectant so that treatment with a nucleophile will trigger deblocking. Comparison of various Michael accepters showed that for several key electron-withdrawing groups, the order of reactivity was C6H5SO2 > Me3CSO2 > COOEt > CsH5SO > C(6)H(4)NO(2-)p. The reactivity of the nucleophile. (e.g., primary and secondary aliphatic amines) followed an order related to both intrinsic basicity and steric effects. beta-Substituents in the Michael acceptor caused significant retardation of the deblocking process. The Bspoc function was chosen for initial elaboration into a practical system for use in peptide synthesis. Bspoc amino acid chlorides were used as coupling agents and silica-tethered secondary amines as deblocking agents. With the latter, deblocking occurs cleanly and no byproducts remain in the organic solvent in which the deblocking is executed.

  DOI：

  10.1021/jo982141d

文献信息

• Direct Deamination of Primary Amines via Isodiazene Intermediates
  作者：Kathleen J. Berger、Julia L. Driscoll、Mingbin Yuan、Balu D. Dherange、Osvaldo Gutierrez、Mark D. Levin

  DOI：10.1021/jacs.1c09779

  日期：2021.10.27

  here a reaction that selectively deaminates primary amines and anilines under mild conditions and with remarkable functional group tolerance including a range of pharmaceutical compounds, amino acids, amino sugars, and natural products. An anomeric amide reagent is uniquely capable of facilitating the reaction through the intermediacy of an unprecedented monosubstituted isodiazene intermediate. In addition

  我们在这里报告了一种在温和条件下选择性地脱氨基伯胺和苯胺的反应，并且具有显着的官能团耐受性，包括一系列药物化合物、氨基酸、氨基糖和天然产物。端基异构酰胺试剂能够通过前所未有的单取代异二氮烯中间体作为中介促进反应。与现有协议相比，除了显着简化脱氨之外，我们的方法还可以将亚胺和胺导向化学作为无痕方法进行战略应用。机械和计算研究支持初级异二氮的中间作用，它与以前研究的次级异二氮表现出意想不到的差异，导致逃逸笼子的自由基物种参与链，
• The photoredox-catalyzed hydrosulfamoylation of styrenes and its application in the novel synthesis of naratriptan
  作者：Mingjun Zhang、Miaomiao Chen、Xin Ding、Jin Kang、Yongyue Gao、Xingxing He、Ziwen Wang、Aidang Lu、Qingmin Wang

  DOI：10.1039/d1cc04225d

  日期：——

  The hydrosulfamoylation of diverse aryl olefins provides facile access to alkylsulfonamides. Here we report a novel protocol utilizing radical-mediated addition and a thiol-assisted strategy to achieve the hydrosulfamoylation of diverse styrenes in modest to excellent yields under mild and economic reaction conditions. The methodology was found to provide an efficient and convenient approach for the

  多种芳基烯烃的氢氨磺酰化提供了容易获得烷基磺酰胺的途径。在这里，我们报告了一种新的协议，利用自由基介导的加成和硫醇辅助的策略，在温和和经济的反应条件下以适度到优异的产率实现各种苯乙烯的氢氨磺酰化。该方法被发现为合成抗偏头痛药物那拉曲坦提供了一种高效便捷的方法，也可用于天然产物或药物的后期功能化。
• Synthesis of peptide chloromethyl ketones and examination of their inhibitory effects on human spleen fibrinolytic proteinase(SFP) and human leukocyte elastase(LE).
  作者：YUKO TSUDA、YOSHIO OKADA、YOKO NAGAMATSU、UTAKO OKAMOTO

  DOI：10.1248/cpb.35.3576

  日期：——

  Various substrate-derived chloromethyl ketones were synthesized by a conventional method for the purpose of obtaining specific and potent irreversible inhibitors for human spleen fibrinolytic proteinase (SFP) and human leukocyte elastase (LE) in order to compare the properties of SFP with those of LE. It was found that Boc-Ala-Tyr-Leu-Val-CH2Cl among the peptide chloromethyl ketones exhibited the most effective and specific inhibition of SFP and LE. The two enzymes were inhibited by peptide chloromethyl ketones having a Val residue at the C-terminus in a similar manner, demonstrating a similarity between SFP and LE.

  为了比较人脾纤溶酶（SFP）和人白细胞弹力酶（LE）的性质，通过传统方法合成了多种来自底物的氯甲基酮，旨在获得对这两种酶具有特异性和强效的不可逆抑制剂。在各种肽氯甲基酮中，发现Boc-Ala-Tyr-Leu-Val-CH2Cl对SFP和LE表现出最有效和特异的抑制作用。这两种酶都被C-末端具有Val残基的肽氯甲基酮以类似方式抑制，这表明SFP和LE之间存在相似性。
• The use of penicillin acylase for selective N-terminal deprotection in peptide synthesis
  作者：Herbert Waldmann

  DOI：10.1016/s0040-4039(00)86668-x

  日期：1988.1

  Penicillin acylase from E. coli (EC 3.5.1.11) accepts a broad range of N-phenylacetyl-dipeptide esters as substrates. The enzyme hydrolyses the N-terminal protecting group selectively at room temp. and pH=8.1 without affecting the peptide- or the ester-bonds. Alternatively methyl-, benzyl-, tert-butyl and allyl esters can be cleaved chemically leaving the phenylacetamido moiety intact.

  来自大肠杆菌的青霉素酰基转移酶（EC 3.5.1.11）接受各种N-苯基乙酰基-二肽酯作为底物。该酶在室温下选择性水解N末端保护基。pH = 8.1，且不影响肽键或酯键。或者，可以化学裂解甲基，苄基，叔丁基和烯丙基酯，而使苯基乙酰胺基部分完整。
• Excited‐State Copper Catalysis for the Synthesis of Heterocycles
  作者：Arghya Banerjee、Satavisha Sarkar、Jagrut A. Shah、Nicoline C. Frederiks、Emmanuel A. Bazan‐Bergamino、Christopher J. Johnson、Ming‐Yu Ngai

  DOI：10.1002/anie.202113841

  日期：2022.1.21

  Visible-light-induced excited-state copper catalysis enables the synthesis of more than 10 distinct classes of heterocycles. The reaction tolerates a broad array of functional groups and complex molecular scaffolds, including derivatives of peptides, natural products, and marketed drugs.

  可见光诱导的激发态铜催化能够合成 10 多种不同类别的杂环化合物。该反应可耐受多种官能团和复杂的分子支架，包括肽衍生物、天然产物和市售药物。