D-leucine benzyl ester | 46741-65-5

• 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: D-leucine benzyl ester
• 英文别名: (R)-2-amino-4-methyl-pentanoic acid benzyl ester；(R)-benzyl 2-amino-4-methylpentanoate；benzyl D-leucinate；D-Leu-O-Bn；D-Leu-OBzl；D-Leu-OBn；benzyl (2R)-2-amino-4-methylpentanoate
• CAS: 46741-65-5
• 化学式: C₁₃H₁₉NO₂
• 分子量: 221.299
• InChiKey: MBRRYUQWSOODEO-GFCCVEGCSA-N

物化性质

• 沸点：
  302.5±17.0 °C(Predicted)
• 密度：
  1.040±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  16
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.46
• 拓扑面积：
  52.3
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  D-leucine benzyl ester 在 Streptomyces spp. 83D₁₂ D-aminopeptidase 作用下， 以 二甲基亚砜 为溶剂， 反应 0.08h， 生成 D-亮氨酸
  参考文献：
  名称：

  Aminolytic reaction catalyzed by d-stereospecific amidohydrolases from Streptomyces spp

  摘要：

  From investigation of 2000 soil isolates, we identified two serine-type amidohydrolases that can hydrolyze D-aminoacyl derivatives from the culture supernatant of Streptomyces species 82F2 and 83D12. The enzymes, redesignated as 82F2-DAP and 83D12-DAP, were purified for homogeneity and characterized. Each enzyme had molecular mass of approximately 40 kDa, and each showed moderate stability with respect to temperature and pH. Among hydrolytic activities toward D-aminoacyl-pNAs, the enzymes showed strict specificity toward D-Phe-pNA, but showed broad specificity toward D-aminoacyl esters. The specific activity for D-Phe-pNA hydrolysis of 82F2-DAP was ten-fold higher than that of 83D12-DAP. As a second function, each enzyme showed peptide bond formation activity by its function of aminolysis reaction. Based on results of D-Phe D-Phe synthesis under various conditions, we propose a reaction mechanism for D-Phe D-Phe production. Furthermore, the enzymes exhibited peptide elongation activity, producing oligo homopeptide in a one-pot reaction. We cloned the genes encoding each enzyme, which revealed that the primary structure of each enzyme showed 30-60% identity with those of peptidases belonging to the clan SE, S12 peptidase family categorized as serine peptidase with D-stereospecificity. (C) 2011 Elsevier Masson SAS. All rights reserved.

  DOI：

  10.1016/j.biochi.2011.04.020
• 作为产物：
  描述：

  D-亮氨酸苄酯对甲苯磺酸盐 在 potassium carbonate 作用下， 以 水 为溶剂， 生成 D-leucine benzyl ester
  参考文献：
  名称：

  Methods and compositions for treating amyloid-related diseases

  摘要：

  描述了用于治疗或预防与淀粉样蛋白相关疾病的方法、化合物、药物组合物和试剂盒。

  公开号：

  US20060223855A1
• 作为试剂：
  描述：

  D-亮氨酸 、 苯甲醇 在 盐酸 、 苯 、 乙酸乙酯 、 amine 、 Sodium sulfate-III 、 乙醚 、 D-leucine benzyl ester 、 hydrochloride salt 作用下， 反应 2.0h， 生成 D-leucine benzyl ester
  参考文献：
  名称：

  Phosphinic acid amides as matrix metalloprotease inhibitors

  摘要：

  本发明提供了一些化合物，这些化合物可用作基质金属蛋白酶的抑制剂，并且在治疗这些酶过度活性所表现的疾病方面具有有效性。特别地，本发明涉及一种结构为式（I）的化合物：##STR1## 其中R.sub.1、R.sub.2、R.sub.3和R.sub.4如权利要求书所述，其立体异构体或对映体，或其药学上可接受的盐，或生物可水解的烷氧酰胺，酯基氧酰胺，酰亚胺或其衍生物。此外，还公开了使用这些化合物或含有这些化合物的药物组合物治疗基质金属蛋白酶活性所表现的疾病的方法和药物组合物。

  公开号：

  US05830915A1

文献信息

• Peptidyl calcium channel blockers
  申请人：Warner-Lambert Company

  公开号：US06423689B1

  公开（公告）日：2002-07-23

  The present invention provides compounds that block calcium channels having the Formula I shown below. The present invention also provides methods of using the compounds of Formula I to treat stroke, cerebral ischemia, head trauma, or epilepsy and to pharmaceutical compositions that contain the compounds of Formula I.

  本发明提供了阻断钙通道的化合物，其具有下面所示的I式。本发明还提供了利用I式化合物治疗中风、脑缺血、头部创伤或癫痫的方法，以及含有I式化合物的药物组合物。
• Relationship between Structure and Papain Inhibitory Activity of Epoxysuccinyl Amino Acid Derivatives
  作者：Masaharu Tamai、Takashi Adachi、Kiyoshi Oguma、Shigeo Morimoto、Kazunori Hanada、Sadafumi Ohmura、Masahiro Ohzeki

  DOI：10.1080/00021369.1981.10864575

  日期：1981.3

  A number of amino acid derivatives of DL-Zra/w-epoxysuccinic acid, with a general formula of R1O-ES-AA-OR2 (ES, DL-trans-epoxysuccinyl group; AA, amino acid residue) were newly synthesized and used for the study of structure-activity relationships of papain inhibition. Branched-alkyl amino acids, such as Leu, He and Val, as AA and hydrogen or an alkyl group substituted with a phenyl or cycloalkyl group as R1 were desirable for activity, respectively. However, R2 or the optical activities of ES and AA not so much influenced on the activity.

  一些DL-Zra/w-环氧琥珀酸氨基酸衍生物被新合成并用于木瓜蛋白酶抑制的结构-活性关系研究。通式为R1O-ES-AA-OR2（ES，DL-反式环氧琥珀酰基团；AA，氨基酸残基）。AA为支链烷基氨基酸，如Leu、He和Val，R1为氢或被苯基或环烷基取代的烷基，这类衍生物具有较好的活性。但R2或ES和AA的光学活性对活性的影响不大。
• Substituted diarylalkyl amides as calcium channel antagonists
  申请人：——

  公开号：US06458781B1

  公开（公告）日：2002-10-01

  The present invention provides compounds that block calcium channels and have the Formula I: The present invention also provides pharmaceutical compositions containing the compounds of Formula I and methods of using them to treat stroke, cerebral ischemia, head trauma, and epilepsy.

  本发明提供了阻断钙通道并具有化学式I的化合物。 本发明还提供了含有化学式I化合物的药物组合物，以及使用它们治疗中风、脑缺血、头部创伤和癫痫的方法。
• Enzymes in organic synthesis: use of subtilisin and a highly stable mutant derived from multiple site-specific mutations
  作者：Chi Huey Wong、S. T. Chen、William J. Hennen、Jeffrey A. Bibbs、Y. F. Wang、Jennifer L. C. Liu、Michael W. Pantoliano、Marc Whitlow、Philip N. Bryan

  DOI：10.1021/ja00159a006

  日期：1990.1

  wild-type enzyme to organic synthesis has been demonstrated in the regioselective acylation of nucleosides in anhydrous dimethylformamide (with 65-100% regioselectivity at the 5'-position), in the enantioselective hydrolysis of N-protected and unprotected common and uncommon amino acid esters inmore » water (with 85-98% enantioselectivity for the L-isomer), and in the synthesis of di- and oligopeptides

  发现通过六个位点特异性突变（Met50Phe、Gly169Ala、Asn76Asp、Gln206Cys、Tyr2l7Lys 和 Asn2l8Ser）衍生自枯草杆菌蛋白酶 BPN' 的枯草杆菌蛋白酶突变体（枯草杆菌蛋白酶 8350）在水溶液中比野生溶液中的稳定性高 100 倍在无水二甲基甲酰胺中比野生型稳定 50 倍。使用酯、硫酯和酰胺底物以及过渡态类似物抑制剂 Boc-Ala-Val-Phe-CFsub 3} 的动力学研究表明，野生型和突变型酶具有非常相似的特异性和催化作用特性。野生型酶的抑制常数 (Ki = 5.0 mu}M) 是突变酶 (Ki = 1.1 mu}M) 的约 5 倍，表明突变酶与反应过渡态的结合比野生型酶。该结果与观察到的相应酯和酰胺底物的速率常数一致；即，突变体的 ksub cat}/Ksub m} 值大于野生型酶的值。突变酶和野生型酶在有机合成中的应用已在无
• Peptide bond formation by aminolysin-A catalysis: A simple approach to enzymatic synthesis of diverse short oligopeptides and biologically active puromycins
  作者：Hirokazu Usuki、Yukihiro Yamamoto、Jiro Arima、Masaki Iwabuchi、Shozo Miyoshi、Teruhiko Nitoda、Tadashi Hatanaka

  DOI：10.1039/c0ob00403k

  日期：——

  peptide bonds to give linear homo-oligopeptides, hetero-dipeptides, and cyclic dipeptides using cost-effective substrates in a one-pot reaction. Aminolysin-A can recognize several C-terminal-modified amino acids, including the L- and D-forms, as acyl donors as well as free amines, including amino acids and puromycin aminonucleoside, as acyl acceptors. The absence of amino acid esters prevents the formation

  新S9系列的氨肽酶从嗜热放线菌衍生Acidothermus了解纤维素被催化丝氨酸的定点突变克隆和工程化到transaminopeptidase 491到半胱氨酸。经过工程改造的生物催化剂，称为氨基溶素A，可以在一锅反应中使用经济高效的底物来催化肽键的形成，从而生成线性同型寡肽，杂二肽和环状二肽。氨基溶素A可以识别多个C末端修饰的氨基酸（包括L-和D-形式）作为酰基供体，以及游离胺（包括氨基酸和嘌呤霉素氨基核苷）作为酰基受体。氨基酸酯的缺乏阻止了肽的形成。因此，反应机理涉及氨解而不是水解的逆反应。氨基溶素系统将是通过简单方法制备结构多样的肽模拟物的有益工具。