(S)-3-(benzyloxycarbonylamino)-5-methylhexanoic acid | 118247-68-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: (S)-3-(benzyloxycarbonylamino)-5-methylhexanoic acid
• 英文别名: N-Benzyloxycarbonyl-L-Homoleucine；(S)-3-(((Benzyloxy)carbonyl)amino)-5-methylhexanoic acid；(3S)-5-methyl-3-(phenylmethoxycarbonylamino)hexanoic acid
• CAS: 118247-68-0
• 化学式: C₁₅H₂₁NO₄
• 分子量: 279.336
• InChiKey: NXDHEHGNNDPBNL-ZDUSSCGKSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  20
• 可旋转键数：
  8
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.47
• 拓扑面积：
  75.6
• 氢给体数：
  2
• 氢受体数：
  4

安全信息

• 危险性防范说明：
  P261,P280,P301+P312,P302+P352,P305+P351+P338
• 危险性描述：
  H302,H315,H319,H335
• 储存条件：
  室温

反应信息

• 作为反应物：
  描述：

  (S)-3-(benzyloxycarbonylamino)-5-methylhexanoic acid 在 氢溴酸 、 溶剂黄146 作用下， 以90%的产率得到L-β-高亮氨酸
  参考文献：
  名称：

  β-肽作为催化剂：聚-β-亮氨酸作为烯酮的Juli-Colonna不对称环氧化的催化剂。

  摘要：

  聚-β-亮氨酸已被评估为朱尼-科隆娜烯不对称环氧化的催化剂。发现β3-异构体是查尔酮（70％ee）和某些类似物环氧化的有效催化剂。

  DOI：

  10.1039/b106368p
• 作为产物：
  描述：

  N-苄氧羰基-L-亮氨酸 在 silver trifluoroacetate 、 氯甲酸乙酯 作用下， 生成 (S)-3-(benzyloxycarbonylamino)-5-methylhexanoic acid
  参考文献：
  名称：

  旋光性β-氨基酸N-羧基氢化物的合成。

  摘要：

  已经开发了通过使用三溴化磷将Nβ-Boc或Nβ-Cbzβ-氨基酸环化来一般合成旋光性β-氨基酸N-羧基酸酐（β-NCA）的方法。β-NCA的形成已通过光谱法以及β-高丙氨酸-N-羧基酸酐的X射线结构测定得到了证实。β-NCA分子可以以高收率聚合，以产生在溶液中采用稳定手性构象的旋光性聚（β-肽）。例如，通过L-β-高苯丙氨酸-N-羧基酸酐的聚合来合成螺旋低聚物（L-β-高苯丙氨酸）。

  DOI：

  10.1021/ol000122w

文献信息

• Convenient in situ synthesis of nonracemic N-protected β-amino aldehydes from β-amino acids. Applications in Wittig reactions and heterocycle synthesis
  作者：Simon B. Davies、M.Anthony McKervey

  DOI：10.1016/s0040-4039(98)02573-8

  日期：1999.2

  N-Z-γ-amino alcohols derived from nonracemic β-amino acids are smoothly oxidised by manganese dioxide in acetonitrile to afford aldehydes which can be trapped in situ in Wittig reactions with carbonyl-substituted phosphoranes. The application of this methodology to the synthesis of the alkaloids (S)-(+)-N-BOC-coniie, (S)-(−)-coniceine and a pipecoline precursor is described.

  源自非外消旋β-氨基酸的N - Z -γ-氨基醇在乙腈中被二氧化锰平滑氧化，得到醛，这些醛可在Wittig反应中与羰基取代的磷烷原位捕获。描述了该方法在生物碱（S）-（+）- N -BOC-coniie，（S）-（-）-coniceine和胡椒碱前体的合成中的应用。
• Effective Methods for the Synthesis ofN-Methylβ-Amino Acids from All Twenty Commonα-Amino Acids Using 1,3-Oxazolidin-5-ones and 1,3-Oxazinan-6-ones
  作者：Andrew B. Hughes、Brad E. Sleebs

  DOI：10.1002/hlca.200690235

  日期：2006.11

  N-Methyl β-amino acids are generally required for application in the synthesis of potentially bioactive modified peptides and other oligomers. Previous work highlighted the reductive cleavage of 1,3-oxazolidin-5-ones to synthesise N-methyl α-amino acids. Starting from α-amino acids, two approaches were used to prepare the corresponding N-methyl β-amino acids. First, α-amino acids were converted to

  应用N-甲基β-氨基酸通常是潜在合成具有生物活性的修饰的肽和其他寡聚体的应用。先前的工作强调了1，3-恶唑烷-5-酮的还原裂解以合成N-甲基α-氨基酸。从α-氨基酸开始，使用两种方法来制备相应的N-甲基β-氨基酸。首先，α -氨基酸转化为Ñ甲基α -氨基酸由所谓的“-1,3-恶唑-5-酮的策略”，将它们再由同系阿恩特-艾斯特方法，得到Ñ-protected Ñ -甲基β -氨基酸选自20种常见衍生α -氨基酸。这些化合物的制备产率为23–57％（相对于N-甲基α-氨基酸）。在第二种方法中，可以通过Arndt–Eistert方法将12个N保护的α-氨基酸直接同源，然后将所得的β-氨基酸以30–45％的产率转化为1,3-恶二嗪-6-酮。 。最后，还原裂解以41–63％的收率提供了所需的N-甲基β-氨基酸。
• 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。
• Chemoenzymatic Synthesis of 4-Amino-2-hydroxy Acids:  A Comparison of Mutant and Wild-Type Oxidoreductases
  作者：Andrew Sutherland、Christine L. Willis

  DOI：10.1021/jo980821a

  日期：1998.10.1

  We describe a new chemoenzymatic synthesis of enantiopure 4-amino-2-hydroxy acids using two biotransformations in a single-pot process in aqueous medium. These compounds are valuable as gamma-turn mimics for investigations into the secondary structure of peptides. The enzyme substrates are a series of carbobenzyloxy (CBZ)-protected 4-amino-2-keto esters, prepared efficiently from the L-amino acids, alanine, leucine, phenylalanine, and valine. First, the alpha-amino acids were converted to the corresponding beta-amino acids in a simple five-step procedure. A further one-carbon homologation via ozonolysis of the corresponding beta-keto cyanophosphoranes gave the required alpha-keto esters in good yield. The enzyme catalyzed hydrolyses of all the alpha-keto esters to the corresponding alpha-keto acids proceeded smoothly with the lipase from Candida rugosa. Using the same reaction pot, it was found that wild-type lactate dehydrogenases from either Bacillus stearothermophilus (BS-LDH) or Staphylococcus epidermidis (SE-LDH) could be used to specifically reduce the ketone of the alanine-derived alpha-keto acid 2, giving the (S)- and (R)-2-hydroxy acids, respectively, in good yields. However, the more bulky alpha-keto acids 3, 4, and 5 (derived from valine, leucine, and phenylalanine) were not substrates for these enzymes. In contrast, the genetically engineered H205Q mutant of D-hydroxyisocaproate dehydrogenase proved to be an ideal catalyst for the reduction of all the alpha-keto acids 2-5, giving excellent yields of the CBZ-protected (2R,4S)-4-amino-2-hydroxy acids as single diastereomers. This genetically engineered oxidoreductase has great potential value in synthesis due to its broad substrate specificity and high catalytic activity. For example, reduction of 1 mmol of N-protected (S)-4-amino-2-oxopentanoic acid 2 took just 4 h with the H205Q mutant giving, after esterification, the (R)-2-alcohol 25 in 85% yield, whereas with SE-LDH the reaction required 4 days to give a 67% yield of 25.
• Synthesis of gastrin antagonists, analogs of the C-terminal tetrapeptide of gastrin, by introduction of a .beta.-homo residue
  作者：M. Rodriguez、P. Fulcrand、J. Laur、A. Aumelas、J. P. Bali、Jean Martinez

  DOI：10.1021/jm00123a003

  日期：1989.3

  A series of analogues of Boc-Trp-Leu-Asp-Phe-NH2, a potent gastrin agonist, were synthesized by introducing a beta-homo residue in the sequence. These compounds were tested in vivo on acid secretion, in the anesthetized rat, and for their ability to inhibit binding of labeled gastrin to its receptors on gastric mucosal cells. These analogues behaved as gastrin antagonists. The most potent compounds in this series were Boc-Trp-Leu-beta-homo-Asp-NHCH2C6H5 (10) (IC50 = 1 microM, ED50 = 0.2 mg/kg), Boc-Trp-Leu-beta-homo-Asp-NHCH2CH2C6H5 (11) (IC50 = 0.75 microM, ED50 = 0.5 mg/kg), Boc-Trp-Leu-beta-homo-Asp-Phe-NH2 (12) (IC50 = 1.5 microM, ED50 = 0.1 mg/kg), and Boc-Trp-Leu-beta-homo-Asp-D-Phe-NH2 (13) (IC50 = 2 microM, ED50 = 0.1 mg/kg). We could demonstrate the importance of the region of the peptide bond between leucine and aspartic acid and of the structure of the C-terminal dipeptide Asp-Phe-NH2, for exhibiting biological activity on acid secretion.