L-7-nitrotryptophan | 82575-95-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吲哚及其衍生物
• 英文名称: L-7-nitrotryptophan
• 英文别名: 7-nitrotryptophan；(2S)-2-amino-3-(7-nitro-1H-indol-3-yl)propanoic acid
• CAS: 82575-95-9
• 化学式: C₁₁H₁₁N₃O₄
• 分子量: 249.226
• InChiKey: BAAGPHWSKFTJTK-QMMMGPOBSA-N

物化性质

• 熔点：
  245-260 °C
• 沸点：
  534.7±50.0 °C(Predicted)
• 密度：
  1.541±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -1.2
• 重原子数：
  18
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  125
• 氢给体数：
  3
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  L-7-nitrotryptophan 在 Ruminococcus gnavus L-tryptophan decarboxylase 作用下， 以 aq. phosphate buffer 为溶剂， 反应 4.0h， 生成 7-nitro-tryptamine
  参考文献：
  名称：

  易于体外生物催化生产多种色胺。

  摘要：

  产品线多样化：色胺是生物活性天然产物中的重要合成子，但色胺类似物的一般合成路线有限。我们提出了一种高度活跃且混杂的生物合成级联，使用工程色氨酸合酶（TrpB）和天然色氨酸脱羧酶（TDC），能够从容易获得的吲哚中产生多种色胺。

  DOI：

  10.1002/cbic.201900069
• 作为产物：
  描述：

  3-(1-acetyl-7-nitroindol-3-yl)-2-aminopropanoic acid 生成 L-7-nitrotryptophan
  参考文献：
  名称：

  Dimethylallyltryptophan synthase. An enzyme-catalyzed electrophilic aromatic substitution

  摘要：

  Dimethylallyltryptophan (DMAT) synthase catalyzes the alkylation of L-tryptophan at C(4) by dimethylallyl diphosphate (DMAPP) in the first pathway-specific step in the biosynthesis of ergot alkaloids. The mechanism of the reaction was studied with analogs of both substrates. Five 7-substituted derivatives of N-acetyltryptophan (2, Z = OCH3, CH3, F, CF3, and NO2) were synthesized. The L enantiomers of the free amino acids were obtained by selective hydrolysis of the racemate using aminoacylase from Aspergillus. In addition, the E and Z fluoromethyl and difluoromethyl analogs of DMAPP (1, Y = CH3, CH2F, CHF2) were prepared. Rates of the enzyme-catalyzed reactions were measured for the dimethylallyl derivatives with L-tryptophan and for the L-tryptophan derivatives with DMAPP. In addition, the relative reactivities of the methanesulfonate derivatives of the DMAPP analogs were determined for solvolysis in aqueous acetone. A Hammett plot for the tryptophan analogs gave a good linear correlation with rho = -2.0. In addition, a Hammett plot of the logarithms of the relative rates of solvolysis and enzyme-catalyzed alkylation gave a positive linear correlation. These results indicate that the prenyl-transfer reaction catalyzed by DMAT synthase is an electrophilic aromatic substitution and is mechanistically similar to the electrophilic alkylation catalyzed by farnesyl diphosphate synthase.

  DOI：

  10.1021/ja00045a004

文献信息

• Unlocking Reactivity of TrpB: A General Biocatalytic Platform for Synthesis of Tryptophan Analogues
  作者：David K. Romney、Javier Murciano-Calles、Jöri E. Wehrmüller、Frances H. Arnold

  DOI：10.1021/jacs.7b05007

  日期：2017.8.9

  it can form Trp analogues directly from serine (Ser) and the corresponding indole analogue. However, many potentially useful substrates, including bulky or electron-deficient indoles, are poorly accepted. We have applied directed evolution to TrpB from Pyrococcus furiosus and Thermotoga maritima to generate a suite of catalysts for the synthesis of previously intractable Trp analogues. For the most challenging

  氨基酸色氨酸（Trp）的衍生物用作具有广泛生物学特性的复杂分子的化学和生物合成的前体。Trp类似物也可作为药物化学的基础材料和化学生物学的工具。虽然Trp类似物的对映选择性合成通常很长并且需要使用保护基，但是酶具有以更少的步骤合成原始产物的潜力，并且具有原始的化学和立体选择性，这是生物催化的特征。TrpB酶特别吸引人，因为它可以直接从丝氨酸（Ser）和相应的吲哚类似物形成Trp类似物。然而，许多潜在有用的底物，包括大体积的或缺乏电子的吲哚，都被人们接受。我们已经从激烈热球菌（Pyrococcus furiosus）和马氏热球菌（Thermotoga maritima）产生了一系列催化剂，用于合成以前难以处理的Trp类似物。对于最具挑战性的底物，例如硝基吲哚，提高活性的关键在于普遍保守且具有重要机械意义的残基E104的突变。新催化剂高水平表达（> 200 mg / L大肠杆菌培养），并可以通
• Engineered synthase for production of tryptophan derivatives and intransigent substrates
  申请人：California Institute of Technology

  公开号：US11332729B2

  公开（公告）日：2022-05-17

  This disclosure relates to modified tryptophan synthase and more particularly to modified beta-subunits of tryptophan synthase. The disclosure further relates to cells expressing such modified subunits and methods of producing non-canonical amino acids.

  本公开涉及修饰的色氨酸合成酶，特别是修饰的色氨酸合成酶β亚基。本公开还涉及表达这种修饰亚基的细胞和生产非经典氨基酸的方法。
• ENGINEERED SYNTHASE FOR PRODUCTION OF TRYPTOPHAN DERIVATIVES AND INTRANSIGENT SUBSTRATES
  申请人：California Institute of Technology

  公开号：EP3504332A1

  公开（公告）日：2019-07-03
• [EN] ENGINEERED SYNTHASE FOR PRODUCTION OF TRYPTOPHAN DERIVATIVES AND INTRANSIGENT SUBSTRATES<br/>[FR] SYNTHASE SPÉCIFIQUEMENT MODIFIÉE POUR LA PRODUCTION DE DÉRIVÉS DE TRYPTOPHANE ET DE SUBSTRATS NON TRANSITIONNELS
  申请人：CALIFORNIA INST OF TECHN

  公开号：WO2018039495A1

  公开（公告）日：2018-03-01

  This disclosure relates to modified tryptophan synthase and more particularly to modified beta-subunits of tryptophan synthase. The disclosure further relates to cells expressing such modified subunits and methods of producing non-canonical amino acids.
• Facile in Vitro Biocatalytic Production of Diverse Tryptamines
  作者：Allwin D. McDonald、Lydia J. Perkins、Andrew R. Buller

  DOI：10.1002/cbic.201900069

  日期：2019.8

  the product line: Tryptamines are important synthons in bioactive natural products, but general synthetic routes to tryptamine analogues are limited. We present a highly active and promiscuous biosynthetic cascade using an engineered tryptophan synthase (TrpB) and native tryptophan decarboxylase (TDC) capable of producing a diverse set of tryptamines from readily accessible indoles.

  产品线多样化：色胺是生物活性天然产物中的重要合成子，但色胺类似物的一般合成路线有限。我们提出了一种高度活跃且混杂的生物合成级联，使用工程色氨酸合酶（TrpB）和天然色氨酸脱羧酶（TDC），能够从容易获得的吲哚中产生多种色胺。