(2R,3R)-3-amino-2-methyl-butyric acid | 139344-67-5

• 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: (2R,3R)-3-amino-2-methyl-butyric acid
• 英文别名: (R,R)-3-amino-2-methyl butanoic acid；2(R)-methyl-3(R)-aminobutanoic acid；(R,R)-3-amino-2-methylbutanoic acid；(2r,3r)-3-Amino-2-methylbutanoic acid
• CAS: 139344-67-5
• 化学式: C₅H₁₁NO₂
• 分子量: 117.148
• InChiKey: RRWPLOJQTOADRZ-QWWZWVQMSA-N

物化性质

• 沸点：
  220.7±23.0 °C(Predicted)
• 密度：
  1.063±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -2.5
• 重原子数：
  8
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.8
• 拓扑面积：
  63.3
• 氢给体数：
  2
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  (2R,3R)-3-amino-2-methyl-butyric acid 、 NAlpha-(5-氟-2,4-二硝基苯基)-L-亮氨酰胺 在 碳酸氢钠 作用下， 以 丙酮 为溶剂， 反应 1.0h， 生成
  参考文献：
  名称：

  Cyclic Depsipeptides, Grassypeptolides D and E and Ibu-epidemethoxylyngbyastatin 3, from a Red Sea Leptolyngbya Cyanobacterium

  摘要：

  Two new grassypeptolides and a lyngbyastatin analogue, together with the known dolastatin 12, have been isolated from field collections and laboratory cultures of the marine cyanobacterium Leptolyngbya sp. collected from the SS Thistlegorm shipwreck in the Red Sea. The overall stereostructures of grassypeptolides D (1) and E (2) and Ibu-epidemethoxylyngbyastatin 3 (3) were determined by a combination of 1D and 2D NMR experiments, MS analysis, Marfey's methodology, and HPLC-MS. Compounds 1 and 2 contain 2-methyl-3-aminobutyric acid and 2-aminobutyric acid, while biosynthetically distinct 3 contains 3-amino-2-methylhexanoic acid and the beta-keto amino acid 4-amino-2,2-dimethyl-3-oxopentanoic acid (Ibu). Grassypeptolides D (1) and E (2) showed significant cytotoxicity to HeLa (IC50 = 335 and 192 nM, respectively) and mouse neuro-2a blastoma cells (IC50 = 599 and 407 nM, respectively), in contrast to Ibu-epidemethoxylyngbyastatin 3 (neuro-2a cells, IC50 > 10 mu M) and dolastatin 12 (neuro-2a cells, IC50 > 1 mu M).

  DOI：

  10.1021/np200270d
• 作为产物：
  描述：

  惕格酸 在 palladium 10% on activated carbon 、 C₂₇H₂₈N₂O₂ 、 N,N-二甲基甲酰胺 正丁基锂 、 magnesium(II) perchlorate 、 草酰氯 、 氢气 作用下， 以 四氢呋喃 、 1,4-二氧六环 、 二氯甲烷 为溶剂， -40.0~60.0 ℃ 、101.33 kPa 条件下， 反应 20.5h， 生成 (2R,3R)-3-amino-2-methyl-butyric acid
  参考文献：
  名称：

  BETA-AMINO ACIDS AND METHODS AND INTERMEDIATES FOR MAKING SAME

  摘要：

  披露了未在β位取代的β-氨基酸；在β位用芳基取代的β-氨基酸；在α位用芳基取代的β-氨基酸；在α位带有两个取代基的β-氨基酸；和/或在α和β位用与α和β位的碳原子一起形成环的基团取代的β-氨基酸。还披露了制备上述β-氨基酸和其他β-氨基酸的方法，包括提供α，β-不饱和亚胺；将α，β-不饱和亚胺转化为2-取代异噁唑啉-5-酮；将2-取代异噁唑啉-5-酮转化为β-氨基酸。

  公开号：

  US20110218342A1

文献信息

• BETA-AMINO ACIDS AND METHODS AND INTERMEDIATES FOR MAKING SAME
  申请人：Sibi Mukund P.

  公开号：US20110218342A1

  公开（公告）日：2011-09-08

  Disclosed are β-amino acids that are unsubstituted in the β position; that are substituted in the β position with an aryl group; that are substituted in the α position with an aryl group; that bear two substituents in the α position; and/or that are substituted in the α and β positions with groups which, together with the carbon atoms at the α and β positions, form a ring. Also disclosed are methods for making the above-mentioned β-amino acids and other β-amino acids which involve providing an α,β-unsaturated imide; converting the α,β-unsaturated imide to a 2-substituted-isoxazolidin-5-one; and converting the 2-substituted-isoxazolidin-5-one to a β-amino acid.

  披露了未在β位取代的β-氨基酸；在β位用芳基取代的β-氨基酸；在α位用芳基取代的β-氨基酸；在α位带有两个取代基的β-氨基酸；和/或在α和β位用与α和β位的碳原子一起形成环的基团取代的β-氨基酸。还披露了制备上述β-氨基酸和其他β-氨基酸的方法，包括提供α，β-不饱和亚胺；将α，β-不饱和亚胺转化为2-取代异噁唑啉-5-酮；将2-取代异噁唑啉-5-酮转化为β-氨基酸。
• Toward a rational design of the assembly structure of polymetallic asymmetric catalysts: design, synthesis, and evaluation of new chiral ligands for catalytic asymmetric cyanation reactions
  作者：Ikuo Fujimori、Tsuyoshi Mita、Keisuke Maki、Motoo Shiro、Akihiro Sato、Sanae Furusho、Motomu Kanai、Masakatsu Shibasaki

  DOI：10.1016/j.tet.2007.02.081

  日期：2007.6

  New chiral ligands (4 and 5) for polymetallic asymmetric catalysts were designed based on the hypothesis that the assembled structure should be stable when made from a stable module 8. A metal-ligand 5:6+mu-oxo+OH complex was generated from Gd((OPr)-Pr-i)(3) and 4 or 5, and this complex was an improved asymmetric catalyst for the desymmetrization of meso-aziridines with TMSCN and conjugate addition of TMSCN to alpha,beta-unsaturated N-acylpyrroles, compared to the previously reported catalysts derived from 1-3. These two groups of catalysts produced opposing enantioselectivity even though the ligands had the same chirality. The functional difference in the asymmetric catalysts is derived from differences in the higher-order structure of the polymetallic catalysts. (C) 2007 Elsevier Ltd. All rights reserved.
• Enzymatic Resolution of α-Alkyl β-Amino Acids Using Immobilized Penicillin G Acylase
  作者：Giuliana Cardillo、Alessandra Tolomelli、Claudia Tomasini

  DOI：10.1021/jo9613500

  日期：1996.1.1
• Enantioselective synthesis of .beta.-amino acids. 2. Preparation of the like stereoisomers of 2-methyl- and 2-benzyl-3-aminobutanoic acid
  作者：Eusebio Juaristi、Jaime Escalante、Bernd Lamatsch、Dieter Seebach

  DOI：10.1021/jo00034a037

  日期：1992.4

  An improved procedure for the preparation of (R)- and (S)-3-aminobutanoic acids (2a) through diastereomer separation of the corresponding (1'S)-N-phenethyl derivatives 1 is reported. From 2a, the four possible stereisomeric perhydropyrimidin-4-ones 4 were prepared through the amide 2c and the Schiff base 3. In the cyclization of 3, the cis products 4 predominate ca. 95.5. These heterocycles can be alkylated (LDA, RX), as demonstrated by methylation and benzylation, with formation of a single diastereoisomer (5, 6). Hydrolysis (6 N aqueous HCl) of these 5,6-dialkylperhydropyrimidin-4-ones leads to the free amino acids 7-10.
• BLAGOEVA, I. B.;RACHINA, V. T.;POJARLIEFF, I. G., DOKL. BOLG. AN, 1982, 35, N 11, 1499-1502
  作者：BLAGOEVA, I. B.、RACHINA, V. T.、POJARLIEFF, I. G.

  DOI：——

  日期：——