Boc-γ-L-二高亮氨酸 | 146453-32-9

• 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
• 中文名称: Boc-γ-L-二高亮氨酸
• 中文别名: (R)-4-(Boc-氨基)-6-甲基庚酸；(R)-4-(叔丁氧羰基)氨基-6-甲基庚酸
• 英文名称: (R)-4-(tert-butoxycarbonylamino)-6-methylheptanoic acid
• 英文别名: Boc-(R)-γ⁴-Leu-OH；Boc γ-leu-OH；(4R)-4-[(tert-butoxycarbonyl)amino]-6-methylheptanoic acid；Boc-(R)-γ4-HHLeu-OH；(R)-4-(Boc-amino)-6-methylheptanoic acid；(4R)-6-methyl-4-[(2-methylpropan-2-yl)oxycarbonylamino]heptanoic acid
• CAS: 146453-32-9
• 化学式: C₁₃H₂₅NO₄
• 分子量: 259.346
• InChiKey: ILHMTULQPDRVLS-SNVBAGLBSA-N

物化性质

• 熔点：
  110-111℃
• 密度：
  1.033

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  18
• 可旋转键数：
  8
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.85
• 拓扑面积：
  75.6
• 氢给体数：
  2
• 氢受体数：
  4

安全信息

• WGK Germany：
  3
• 海关编码：
  2924199090

SDS

Material Safety Data Sheet

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Section 1. Identification of the substance
Product Name: (R)-4-(Boc-amino)-6-methylheptanoic acid
Synonyms:

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Section 2. Hazards identification
Harmful by inhalation, in contact with skin, and if swallowed.

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Section 3. Composition/information on ingredients.
Ingredient name: (R)-4-(Boc-amino)-6-methylheptanoic acid
CAS number: 146453-32-9

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Section 4. First aid measures
Skin contact: Immediately wash skin with copious amounts of water for at least 15 minutes while removing
contaminated clothing and shoes. If irritation persists, seek medical attention.
Eye contact: Immediately wash skin with copious amounts of water for at least 15 minutes. Assure adequate
flushing of the eyes by separating the eyelids with fingers. If irritation persists, seek medical
attention.
Inhalation: Remove to fresh air. In severe cases or if symptoms persist, seek medical attention.
Ingestion: Wash out mouth with copious amounts of water for at least 15 minutes. Seek medical attention.

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Section 5. Fire fighting measures
In the event of a fire involving this material, alone or in combination with other materials, use dry
powder or carbon dioxide extinguishers. Protective clothing and self-contained breathing apparatus
should be worn.

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Section 6. Accidental release measures
Personal precautions: Wear suitable personal protective equipment which performs satisfactorily and meets local/state/national
standards.
Respiratory precaution: Wear approved mask/respirator
Hand precaution: Wear suitable gloves/gauntlets
Skin protection: Wear suitable protective clothing
Eye protection: Wear suitable eye protection
Methods for cleaning up: Mix with sand or similar inert absorbent material, sweep up and keep in a tightly closed container
for disposal. See section 12.
Environmental precautions: Do not allow material to enter drains or water courses.

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Section 7. Handling and storage
Handling: This product should be handled only by, or under the close supervision of, those properly qualified
in the handling and use of potentially hazardous chemicals, who should take into account the fire,
health and chemical hazard data given on this sheet.
Store in closed vessels.
Storage:

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Section 8. Exposure Controls / Personal protection
Engineering Controls: Use only in a chemical fume hood.
Personal protective equipment: Wear laboratory clothing, chemical-resistant gloves and safety goggles.
General hydiene measures: Wash thoroughly after handling. Wash contaminated clothing before reuse.

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Section 9. Physical and chemical properties
Appearance: Not specified
Boiling point: No data
No data
Melting point:
Flash point: No data
Density: No data
Molecular formula: C13H25NO4
Molecular weight: 259.3

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Section 10. Stability and reactivity
Conditions to avoid: Heat, flames and sparks.
Materials to avoid: Oxidizing agents.
Possible hazardous combustion products: Carbon monoxide, nitrogen oxides.

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Section 11. Toxicological information
No data.

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Section 12. Ecological information
No data.

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Section 13. Disposal consideration
Arrange disposal as special waste, by licensed disposal company, in consultation with local waste
disposal authority, in accordance with national and regional regulations.

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Section 14. Transportation information
Non-harzardous for air and ground transportation.

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Section 15. Regulatory information
No chemicals in this material are subject to the reporting requirements of SARA Title III, Section
302, or have known CAS numbers that exceed the threshold reporting levels established by SARA
Title III, Section 313.

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SECTION 16 - ADDITIONAL INFORMATION
N/A

反应信息

• 作为反应物：
  描述：

  Boc-γ-L-二高亮氨酸 在 N-甲基吗啉 、 盐酸 、 1-羟基苯并三唑 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 、 三氟乙酸 作用下， 以 四氢呋喃 、 1,4-二氧六环 、 二氯甲烷 、 苯 为溶剂， 反应 69.0h， 生成 (R)-4-[(S)-4-((R)-4-{(R)-4-[(S)-4-((R)-4-tert-Butoxycarbonylamino-5-methyl-hexanoylamino)-pentanoylamino]-6-methyl-heptanoylamino}-5-methyl-hexanoylamino)-pentanoylamino]-6-methyl-heptanoic acid benzyl ester
  参考文献：
  名称：

  γ-肽形成更稳定的二级结构比α-肽：合成和H-（缬氨酸-丙氨酸-亮氨酸）的γ-六肽类似物的螺旋NMR溶液结构2 -OH †

  摘要：

  为了与相应的α-和β-六肽H-（Val-Ala-Leu）2 -OH（A）和H-（β-HVal-β-HAla-β-HLeu）2 -OH（B）进行比较，我们现在准备了由手性相似的（S）-4-氨基丁酸，（R）-4-氨基-5-甲基己酸和（R）-4-氨基-6-甲基庚酸构建的相应的γ-六肽1。通过对受保护氨基酸Boc-Val-OH，Boc-Ala-OH和Boc-Leu-OH进行双重Arndt - Eistert同源性制备前体（方案1和2），或通过涉及相应醛的烯化/加氢的高级途径（Boc-戊醛，Boc-丙氨酸和Boc-亮氨酸；方案3）。常规肽偶合方法（EDC / HOBT）提供的γ-六肽1（通过中间γ-二-和γ-三肽衍生物9 - 11）。在（D 5）吡啶和CD 3 OH溶液（COSY，TOCSY，HSQC，HMBC，ROESY）中进行的NMR测量分析表明，γ-六肽1采用右旋螺旋结构（（P）-2.6 1

  DOI：

  10.1002/hlca.19980810514
• 作为产物：
  描述：

  2-甲基-2-丙基[(2S)-4-甲基-1-氧代-2-戊烷基]氨基甲酸酯 在 palladium on activated charcoal ruthenium trichloride 、 sodium periodate 、 氢气 、 双(三甲基硅烷基)氨基钾 作用下， 以 甲醇 、 四氯化碳 、 甲苯 、 乙腈 为溶剂， 反应 47.25h， 生成 Boc-γ-L-二高亮氨酸
  参考文献：
  名称：

  基于钌催化的苯基氧化成羧酸的非天然氨基酸的合成

  摘要：

  开发了一种从天然 a-氨基酸开始合成具有蛋白质侧链的对映纯 b-、g-和 d-氨基酸的有效方法。该方法基于钌催化的苯基氧化成羧酸。b-氨基酸可以从 Boc-苯丙氨醇开始制备。由于最初选择的起始叶立德链长，所描述的合成 g-和 d-氨基酸的路线允许在氨基和羧基官能团之间插入任何链长。开发非天然氨基酸的新合成方法是一个蓬勃发展的研究领域，因为此类化合物可用于药理学相关分子、生物活性肽类似物和肽模拟物的合成。1-3 最近，新的生物有机方法使非天然氨基酸能够整合到蛋白质框架中。4 此外，含有非天然氨基酸的寡肽能够形成明确的二级结构。最近的研究表明，包含 b- 或 g- 氨基酸的短链肽可以在溶液或固态中采用螺旋片或反向构象，如 NMR、X 射线和建模研究所证明的那样。5,6 天然的 a- 肽与类似的 b- 和 g- 肽之间令人惊讶的差异是螺旋稳定性随着残基的同源化而增加。7 正如最近所证明的，8 b

  DOI：

  10.1055/s-2005-861812

文献信息

• Consequences of Isostructural Main‐Chain Modifications for the Design of Antimicrobial Foldamers: Helical Mimics of Host‐Defense Peptides Based on a Heterogeneous Amide/Urea Backbone
  作者：Paul Claudon、Aude Violette、Karen Lamour、Marion Decossas、Sylvie Fournel、Béatrice Heurtault、Julien Godet、Yves Mély、Brigitte Jamart‐Grégoire、Marie‐Christine Averlant‐Petit、Jean‐Paul Briand、Guy Duportail、Henri Monteil、Gilles Guichard

  DOI：10.1002/anie.200905591

  日期：2010.1.8

  Fraternal twins: Oligoureas and γ‐peptides are isosteric, quasi‐isostructural helical foldamers endowed with distinct biomolecular recognition properties. Combination of the two backbones to generate urea/amide hybrids (see picture) was found to give more potent yet less cytotoxic antimicrobial helical foldamers.

  异卵双胞胎：寡聚尿素和γ肽是等规的准结构螺旋折叠子，具有独特的生物分子识别特性。发现两个主链的组合产生尿素/酰胺杂化物（参见图片）可提供更有效的细胞毒性抗菌螺旋折叠剂。
• Facile stereoselective synthesis of γ-substituted γ-amino acids from the corresponding α-amino acids
  作者：Martin Smrcina、Pavel Majer、Eva Majerová、Tatiana A. Guerassina、Michael A. Eissenstat

  DOI：10.1016/s0040-4020(97)00840-5

  日期：1997.9

  method for the synthesis of γ-substituted, γ-amino acids from α-amino acids was developed. The key step of the procedure is complete reduction of the keto functionality of α-amino acyl Meldrum's acid by sodium acetoxyborohydride. The resulting amino alkyl Meldrum's acid undergoes thermal decarboxylative ring closure to a 5-substituted pyrrolidinone which yields the corresponding γ-amino acid after basic

  开发了一种从α-氨基酸合成γ-取代的γ-氨基酸的简便的立体选择方法。该方法的关键步骤是用乙酰氧基硼氢化钠完全还原α-氨基酰基麦德鲁姆酸的酮官能度。所得的氨基烷基麦德鲁姆酸经历热脱羧闭环成5-取代的吡咯烷酮，其在碱性水解后产生相应的γ-氨基酸。该过程的总产率为40％至65％。
• Potent Antimicrobial Activity of Lipidated Short α,γ-Hybrid Peptides
  作者：Sushil N. Benke、Hirekodathakallu V. Thulasiram、Hosahudya N. Gopi

  DOI：10.1002/cmdc.201700370

  日期：2017.10.9

  Herein we report the potent antimicrobial activity of α,γ‐hybrid lipopeptides composed of 1:1 alternating α‐ and γ‐amino acids. Along with their potent antimicrobial activity against various Gram‐positive and Gram‐negative bacteria, these hybrid lipopeptides were found to be less hemolytic. Studies into the mechanism of action revealed that these short cationic lipopeptides bind and disrupt the bacterial

  本文中，我们报告了由1：1交替的α-和γ-氨基酸组成的α，γ-混合脂肽的有效抗菌活性。这些杂合脂肽除了具有针对各种革兰氏阳性和革兰氏阴性细菌的强效抗菌活性外，还具有较小的溶血作用。对作用机理的研究表明，这些短阳离子脂肽结合并破坏细菌细胞膜。时间杀灭动力学分析表明，有效的α，γ-混合脂肽可在不到20分钟的时间内完全抑制细菌生长。总体而言，这些α，γ-混合脂肽显示出令人鼓舞的抗菌活性以及较低的溶血活性，使其非常适合进一步探索有效的脂肽抗生素的设计。
• 13-Helix folding of a β/γ-peptide manifold designed from a “minimal-constraint” blueprint
  作者：Claire M. Grison、Sylvie Robin、David J. Aitken

  DOI：10.1039/c6cc02142e

  日期：——

  A bottom-up design rationale was used to select an alternating β/γ-peptide motif which folds into a well-defined 13-helix in solution.

  采用自下而上的设计原理选择了一个交替的β/γ-肽基序，该基序在溶液中折叠成一个明确定义的13螺旋结构。
• Synthesis of Enantiomerically Pure β- and γ-Amino Acids from Aspartic and Glutamic Acid Derivatives
  作者：A. El Marini、M. L. Roumestant、Ph. Viallefont、D. Razafindramboa、M. Bonato、M. Follet

  DOI：10.1055/s-1992-26315

  日期：——

  An efficient synthesis of enantiomerically pure β- and γ-amino acids starting from commercially available aspartic and glutamic acid derivatives is described. The acid function, α to the amino group, is first transformed to a good leaving group and the product reacted with organocuprates to yield β-and γ-amino esters. After deprotection β- and γ-amino acids are obtained in good overall yields.

  描述了一种高效合成手性纯的β-和γ-氨基酸的方法，该方法从市售的谷氨酸和天冬氨酸衍生物出发。首先将氨基酸的α位羧基转化为良好的离去基团，然后与有机铜试剂反应，生成β-和γ-氨基酸酯。经过脱保护步骤后，以良好的总产率获得β-和γ-氨基酸。