Maltohexaose | 133644-78-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: Maltohexaose
• 英文别名: (2R,3R,4S,5S,6R)-2-[(2R,3S,4R,5R,6R)-6-[(2R,3S,4R,5R,6R)-6-[(2R,3S,4R,5R,6R)-6-[(2R,3S,4R,5R,6R)-4,5-dihydroxy-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6S)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol
• CAS: 133644-78-7
• 化学式: C₃₆H₆₂O₃₁
• 分子量: 990.87
• InChiKey: OCIBBXPLUVYKCH-QXVNYKTNSA-N

物化性质

• 沸点：
  1307.8±65.0 °C(Predicted)
• 密度：
  1.87±0.1 g/cm3(Predicted)
• 物理描述：
  Solid
• 碰撞截面：
  286.4 Ų [M+Na]+ [CCS Type: DT, Method: stepped-field]

计算性质

• 辛醇/水分配系数(LogP)：
  -13.3
• 重原子数：
  67
• 可旋转键数：
  16
• 环数：
  6.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  506
• 氢给体数：
  20
• 氢受体数：
  31

反应信息

• 作为反应物：
  描述：

  Maltohexaose 在 porcine-pancreatic alpha-amylase phosphate buffer 、 硫酸 作用下， 生成 可溶性淀粉
  参考文献：
  名称：

  麦芽寡糖酶水解的动力学：与酸水解的比较

  摘要：

  摘要研究了猪胰α-淀粉酶催化的麦芽低聚糖G 3 -G 6的水解，反应温度为25°。确定了与酶攻击的不同位置相对应的动力学参数，并评估了产物抑制作用。在反应速率和在70℃下在0.1m H 2 SO 4中水解的作用方式方面比较了酶水解。建立了水解机理的数学模型，并对实验结果进行了很好的合理化。

  DOI：

  10.1016/0008-6215(87)80045-9
• 作为产物：
  描述：

  对氟苯甲醇 以 水 为溶剂， 生成 Maltohexaose
  参考文献：
  名称：

  Determination of kinetic parameters for maltotriose and higher malto-oligosaccharides in the reactions catalyzed by α-d-glucan phosphorylase from potato

  摘要：

  For kinetic studies on its synthetic and phosphorolytic reactions, alpha-D-glucan phosphorylase form potatoes was purified chromatographically until free of D-enzyme. Purified maltotriose (G3) is a poor primer in the phosphorylase-catalyzed synthetic reaction, showing an anomalous time course and making previous attempts to determine its kinetic parameters unsuccessful. In the present work the true rate of the G3-primed reaction was obtained from linear plots obtained by incorporating a sufficient quantity of beta-amylase in the digest to eliminate the more rapidly reacting G4 formed from the G3. A K(m) value of 9.4 +/- 0.8 mM for G3 was calculated from the data by a nonlinear least-squares method. Kinetic parameters for a series of higher malto-oligosaccharides (G4-G8) were also determined in both the synthetic and the phosphorolytic directions. A large change in the values of K(m) and V/e was seen on going from G3 to G4 for the synthetic reaction, and from G4 to G5 for the phosphorolytic. For the higher saccharides the V/e values do not vary strongly with increasing d.p., while the K(m) values tend to decrease, as has seen in the reactions of other plant phosphorylases.

  DOI：

  10.1016/0008-6215(91)84131-w

文献信息

• Oligosaccharide conjugates for targeting bacteria and uses related thereto
  申请人：Emory University

  公开号：US09821071B2

  公开（公告）日：2017-11-21

  This disclosure relates to conjugates for targeting bacteria and related uses. In certain embodiments, the disclosure relates to methods of transferring a molecule of interest into bacteria comprising mixing bacteria with a non-naturally occurring conjugate under conditions such that the conjugate is transported across the bacterial cell wall. Typically, the conjugate comprises an oligosaccharide and a molecule of interest. In certain embodiments, the molecule of interest may be a tracer or an antibiotic.

  这份披露涉及用于靶向细菌和相关用途的共轭物。在某些实施例中，该披露涉及将感兴趣的分子转移至细菌的方法，包括将细菌与非自然存在的共轭物混合在一起，在条件下使共轭物被跨越细菌细胞壁。通常，共轭物包括寡糖和感兴趣的分子。在某些实施例中，感兴趣的分子可能是示踪剂或抗生素。
• BITTER TASTE MODIFIERS INCLUDING SUBSTITUTED 1-BENZYL-3-(1-(ISOXAZOL-4-YLMETHYL)-1H-PYRAZOL-4-YL)IMIDAZOLIDINE-2,4-DIONES AND COMPOSITIONS THEREOF
  申请人：SENOMYX, INC.

  公开号：US20160376263A1

  公开（公告）日：2016-12-29

  The present invention includes compounds and compositions known to modify the perception of bitter taste, and combinations of said compositions and compounds with additional compositions, compounds, and products. Exemplary compositions comprise one or more of the following: cooling agents; inactive drug ingredients; active pharmaceutical ingredients; food additives or foodstuffs; flavorants, or flavor enhancers; food or beverage products; bitter compounds; sweeteners; bitterants; sour flavorants; salty flavorants; umami flavorants; plant or animal products; compounds known to be used in pet care products; compounds known to be used in personal care products; compounds known to be used in home products; pharmaceutical preparations; topical preparations; cannabis-derived or cannabis-related products; compounds known to be used in oral care products; beverages; scents, perfumes, or odorants; compounds known to be used in consumer products; silicone compounds; abrasives; surfactants; warming agents; smoking articles; fats, oils, or emulsions; and/or probiotic bacteria or supplements.

  本发明涵盖已知用于改变苦味感知的化合物和组合物，以及所述组合物和化合物与额外的组合物、化合物和产品的组合。示例组合物包括以下一种或多种：冷却剂；无活性药物成分；活性药用成分；食品添加剂或食品；调味剂或调味增强剂；食品或饮料产品；苦味化合物；甜味剂；苦味剂；酸味调味剂；咸味调味剂；鲜味调味剂；植物或动物产品；已知用于宠物护理产品中的化合物；已知用于个人护理产品中的化合物；已知用于家用产品中的化合物；制药制剂；局部制剂；大麻衍生或与大麻相关的产品；已知用于口腔护理产品中的化合物；饮料；香味、香水或除臭剂；已知用于消费品中的化合物；硅化合物；磨料；表面活性剂；发热剂；吸烟物品；脂肪、油脂或乳化剂；和/或益生菌或补充剂。
• [EN] ANTI-MICROBIAL AGENT-POLYMER CONJUGATES AND METHODS OF USE THEREOF<br/>[FR] CONJUGUÉS D'AGENT ANTIMICROBIEN-POLYMÈRE ET LEURS PROCÉDÉS D'UTILISATION
  申请人：UNIV CALIFORNIA

  公开号：WO2018195078A1

  公开（公告）日：2018-10-25

  The present disclosure provides a conjugate comprising an anti-microbial agent and a hydrophilic polymer; and compositions, including pharmaceutical compositions, comprising the conjugates. The present disclosure provides a conjugate comprising a polymyxin covalently linked to a maltodextrin polymer; and compositions, including pharmaceutical compositions, comprising the conjugates. The present disclosure provides methods of inhibiting growth of a bacterium, and methods of treating a bacterial infection.

  本公开提供了一种包含抗微生物剂和亲水性聚合物的共轭物；以及包括药物组合物在内的组合物。本公开提供了一种包含共价连接到麦芽糖聚合物的多粘菌素的共轭物；以及包括药物组合物在内的组合物。本公开提供了抑制细菌生长的方法，以及治疗细菌感染的方法。
• GLUCOSYRINGIC ACID ANALOGS AS SWEETNESS PROFILE MODIFIERS
  申请人：PepsiCo, Inc.

  公开号：US20180020708A1

  公开（公告）日：2018-01-25

  The present disclosure provides novel sweetener compositions comprising a compound having a structure according to Formula I: wherein R 1 , R 2 , R 3 , and R 4 are described herein. Also provided are methods of modulating sweetness profile of a product by adding a compound of Formula I to the product, such as a beverage product or a food product. For example, the compound described herein can be added to increase the overall sweetness of a nutritive sweetener sweetened beverages; decrease the sweetness time-of-onset for high potency sweeteners such as rebaudioside A; decreasing bitter, metallic and licorice off-notes of high potency sweeteners; and improve the sweet quality of sweetened products.

  本公开提供了包含具有如下式I的结构的化合物的新型甜味剂组合物： 其中R1、R2、R3和R4如本文所述。还提供了通过向产品添加式I的化合物来调节产品的甜味特性的方法，例如饮料产品或食品产品。例如，本文描述的化合物可添加以增加富含甜味剂的饮料的整体甜度；减少高效甜味剂（如甜菊糖A）的甜味起始时间；减少高效甜味剂的苦味、金属味和甘草味等异味；并改善甜味产品的甜味质量。
• [EN] AMINOACRIDINE AND AMINOPYRENE DYES AND THEIR USE AS FLUORESCENT TAGS, IN PARTICULAR FOR CARBOHYDRATE ANALYSIS<br/>[FR] COLORANTS AMINOACRIDINE ET AMINOPYRÈNE ET LEUR UTILISATION COMME MARQUEURS FLUORESCENTS, EN PARTICULIER POUR L'ANALYSE DES HYDRATES DE CARBONE
  申请人：MAX PLANCK GESELLSCHAFT

  公开号：WO2021110280A1

  公开（公告）日：2021-06-10

  The invention relates to novel fluorescent dyes with multiple negatively charged groups in their ionized form which are 9-aminoacridines or 1-aminopyreneshaving of one of the following general formulae A-E: or salts or protonated forms thereof, wherein the ionizable groups are typically selected from the following: OH, SH, COOH, SO3H, OSO3H,SO2NHCN, P(O)(OH)2, P(O)(OH)2. The invention further relates to the use of these dyes as fluorescent tags, in particular for reducing sugars and glycans, and to carbohydrate-dye conjugates comprising these dyes as well as to methods for preparing the same.

  该发明涉及具有多个带负电荷基团的新型荧光染料，其在离子化形式下为9-氨基蒽啶或1-氨基吡啶，具有以下通用式A-E之一：或其盐或质子化形式，其中可离子化的基团通常选择自以下基团：OH、SH、COOH、SO3H、OSO3H、SO2NHCN、P(O)(OH)2、P(O)(OH)2。该发明还涉及将这些染料用作荧光标记物，特别是用于还原糖和糖类，以及包括这些染料的碳水化合物-染料共轭物，以及制备它们的方法。