L-天冬酰胺叔丁酯 | 25456-86-4

• 物质功能分类: 生物化工 - 氨基酸及其衍生物 - 天冬酰胺类衍生物
• 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: L-天冬酰胺叔丁酯
• 中文别名: H-Asn-OtBu
• 英文名称: L-asparagine tert-butyl ester
• 英文别名: tert-butyl L-asparaginate；H-Asn-OtBu；asparagine tert-butyl ester；H-L-Asn-OtBu；L-Asn-O-t-Bu；tert-butyl (2S)-2,4-diamino-4-oxobutanoate
• CAS: 25456-86-4
• 化学式: C₈H₁₆N₂O₃
• 分子量: 188.227
• InChiKey: VLLGKVRQXXHELH-YFKPBYRVSA-N

物化性质

• 沸点：
  340.2±32.0 °C(Predicted)
• 密度：
  1.113±0.06 g/cm3(Predicted)
• 溶解度：
  溶于氯仿、二氯甲烷、乙酸乙酯、DMSO、丙酮等。

计算性质

• 辛醇/水分配系数(LogP)：
  -0.9
• 重原子数：
  13
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  95.4
• 氢给体数：
  2
• 氢受体数：
  4

安全信息

• 危险类别码：
  R52
• 海关编码：
  2924199090
• 危险性防范说明：
  P261,P305+P351+P338
• 危险性描述：
  H315,H319,H335
• 储存条件：
  室温

SDS

Material Safety Data Sheet

---

Section 1. Identification of the substance
Product Name: H-Asn-OtBu
Synonyms:

---

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

---

Section 3. Composition/information on ingredients.
Ingredient name: H-Asn-OtBu
CAS number: 25456-86-4

---

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.

---

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.

---

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.

---

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, refrigerated.
Storage:

---

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.

---

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: C8H16N2O3
Molecular weight: 188.2

---

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.

---

Section 11. Toxicological information
No data.

---

Section 12. Ecological information
No data.

---

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.

---

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

---

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.

---

SECTION 16 - ADDITIONAL INFORMATION
N/A

反应信息

• 作为反应物：
  描述：

  L-天冬酰胺叔丁酯 在 二甲胺 、 原甲酸三甲酯 作用下， 以 吡啶 、 苯 为溶剂， 生成 tert-butyl (2S,4S)-3-[(2R)-2-acetamidopropanoyl]-2-(4-chloro-3-nitrophenyl)-6-oxo-1,3-diazinane-4-carboxylate
  参考文献：
  名称：

  Dipeptide Surrogates Containing Asparagine-Derived Tetrahydropyrimidinones:  Preparation, Structure, and Use in Solid Phase Synthesis

  摘要：

  DOI：

  10.1021/ja9639271
• 作为产物：
  描述：

  Z-L-天冬酰胺叔丁酯 在 palladium-carbon 氢气 、 甲醇 作用下， 以 乙酸乙酯 为溶剂， 反应 1.0h， 生成 L-天冬酰胺叔丁酯
  参考文献：
  名称：

  Process for the manufacture of cystine-containing peptides

  摘要：

  本发明涉及一种改进的方法，用于从含有S-三苯基甲基保护基的半胱氨酸氨基酸序列中制备含半胱氨酸的肽，其中S-三苯基甲基半胱氨酸序列直接与碘氧化以产生半胱氨酸二硫键。

  公开号：

  US04271068A1

文献信息

• Allenone-Mediated Racemization/Epimerization-Free Peptide Bond Formation and Its Application in Peptide Synthesis
  作者：Zhengning Wang、Xuewei Wang、Penghui Wang、Junfeng Zhao

  DOI：10.1021/jacs.1c04614

  日期：2021.7.14

  peptide synthesis (SPPS). The robustness of the allenone-mediated peptide bond formation was showcased incisively by the synthesis of carfilzomib, which involved a rare racemization-/epimerization-free N to C peptide elongation strategy. Furthermore, the successful synthesis of the model difficult peptide ACP (65–74) on a solid support suggested that this method was compatible with SPPS. This method combines

  Allenone 首次被鉴定为一种高效的肽偶联剂。肽键以α-羰基乙烯基酯为关键中间体形成，其形成和随后的氨解以无外消旋/差向异构化的方式自发进行。丙二烯酮偶联试剂不仅对简单酰胺和二肽的合成有效，而且还适用于肽片段缩合和固相肽合成 (SPPS)。卡非佐米的合成充分展示了丙二烯酮介导的肽键形成的稳健性，该合成涉及一种罕见的无消旋化/差向异构化的 N 到 C 肽延伸策略。此外，在固体支持物上成功合成模型困难肽 ACP (65-74) 表明该方法与 SPPS 兼容。该方法结合了传统活性酯和偶联剂的优点，同时克服了两种策略的缺点。因此，这种丙二烯酮介导的肽键形成策略代表了肽合成的颠覆性创新。
• Total Synthesis of TMC-95A and -B via a New Reaction Leading to <i>Z</i>-Enamides. Some Preliminary Findings as to SAR
  作者：Songnian Lin、Zhi-Qiang Yang、Benjamin H. B. Kwok、Michael Koldobskiy、Craig M. Crews、Samuel J. Danishefsky

  DOI：10.1021/ja049821k

  日期：2004.5.1

  A full account of the total syntheses of proteasome inhibitors TMC-95A and -B is provided. A key feature of the syntheses involved installation of a cis-propenylamide moiety by a thermal rearrangement of an alpha-silylallyl amide. The scope and mechanism of the enamide-forming reaction are discussed. Also provided are some preliminary results from SAR studies. It was found that simplified analogues

  提供了蛋白酶体抑制剂 TMC-95A 和 -B 的全合成的完整说明。合成的一个关键特征涉及通过α-甲硅烷基烯丙基酰胺的热重排安装顺式丙烯酰胺部分。讨论了烯酰胺形成反应的范围和机理。还提供了一些 SAR 研究的初步结果。发现简化的类似物可以保留蛋白酶体抑制的全部效力。
• [EN] COMPOSITIONS AND METHODS FOR THE TREATMENT OF BACTERIAL INFECTIONS<br/>[FR] COMPOSÉS ET MÉTHODES POUR LE TRAITEMENT D'INFECTIONS BACTÉRIENNES
  申请人：CIDARA THERAPEUTICS INC

  公开号：WO2018006063A1

  公开（公告）日：2018-01-04

  Compositions and methods for the treatment of bacterial infections include compounds containing dimers of cyclic heptapeptides conjugated to one or more monosaccharide or oligosaccharide moieties. In particular, compounds can be used in the treatment of bacterial infections caused by Gram-negative bacteria.

  用于治疗细菌感染的组合物和方法包括含有环七肽二聚体与一个或多个单糖或寡糖基团结合的化合物。特别是，这些化合物可用于治疗由革兰氏阴性细菌引起的细菌感染。
• Cycloalkylcarbonylamino Acid Ester Derivative and Process for Producing The Same
  申请人：Kobayashi Nobuo

  公开号：US20090137799A1

  公开（公告）日：2009-05-28

  Cycloalkylcarbonylamino acid ester derivatives, which are raw material intermediates for a novel cycloalkane carboxamide derivative having an action that selectively inhibits cathepsin K, and a production process thereof, are provided. A cycloalkylcarbonylamino acid ester derivative represented by formula (I), or a pharmaceutically acceptable salt thereof: (wherein, R 1 and R 2 represent alkyl groups, alkenyl groups, alkynyl groups, aromatic hydrocarbon groups, heterocyclic groups, etc., R 8 represents an alkyl group having 1 to 6 carbon atoms, and ring A represents a cyclic alkylidene group having 5, 6 or 7 carbon atoms).

  环烷基羰基氨基酸酯衍生物是一种新型环烷烃羧酰胺衍生物的原料中间体，具有选择性抑制卡特普辛K的作用，提供其生产工艺。 表示为式（I）的环烷基羰基氨基酸酯衍生物，或其药学上可接受的盐： （其中，R1和R2代表烷基、烯基、炔基、芳香烃基、杂环基等，R8代表具有1至6个碳原子的烷基，环A代表具有5、6或7个碳原子的环烷基亚基）。
• Ynamide-Mediated Thiopeptide Synthesis
  作者：Jinhua Yang、Changliu Wang、Silin Xu、Junfeng Zhao

  DOI：10.1002/anie.201811586

  日期：2019.1.28

  two‐step strategy for thiopeptide bond formation with readily available monothiocarboxylic acids as thioacyl donors is described. The α‐thioacyloxyenamide intermediates formed from the ynamides and monothiocarboxylic acids can be purified, characterized, and stored. The balance between their activity and stability enables them to act as effective thioacylating reagents to afford thiopeptide bonds under mild

  不足的合成策略不足以将硫酰胺键位点引入肽主链，因此无法探索作为肽和蛋白质化学生物学工具的硫酰胺替代物的全部潜力。描述了一种新颖的由酰胺介导的两步策略，用于以易于获得的单硫代羧酸作为硫代酰基供体的硫肽键形成。由乙酰胺和一硫代羧酸形成的α-硫代酰氧烯酰胺中间体可以进行纯化，表征和储存。它们的活性和稳定性之间的平衡使它们能够充当有效的硫酰化试剂，在温和的反应条件下提供硫肽键。氨基酸官能团，例如OH，CONH 2，并且在巯基肽合成过程中不需要保护吲哚NH基团。这种策略的模块化性质使得在溶液和固相中都可以将硫酰胺键定点结合到肽主链中。