n-octyl β-D-galactopyranosyl-(1->4)-α-D-glucopyranoside

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: n-octyl β-D-galactopyranosyl-(1->4)-α-D-glucopyranoside
• 英文别名: octyl-α-D-lactopyranoside；Gal(b1-4)Glc(a)-O-octyl；(2S,3R,4S,5R,6R)-2-[(2R,3S,4R,5R,6S)-4,5-dihydroxy-2-(hydroxymethyl)-6-octoxyoxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol
• 化学式: C₂₀H₃₈O₁₁
• 分子量: 454.515
• InChiKey: MASIZQYHVMQQKI-OCQBXKAFSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.8
• 重原子数：
  31
• 可旋转键数：
  12
• 环数：
  2.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  179
• 氢给体数：
  7
• 氢受体数：
  11

反应信息

• 作为产物：
  描述：

  Lactose 在 N-溴代丁二酰亚胺(NBS) 、 溶剂黄146 作用下， 以 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 72.42h， 生成 正辛基-Β-D-乳糖苷 、 n-octyl β-D-galactopyranosyl-(1->4)-α-D-glucopyranoside
  参考文献：
  名称：

  Protecting group-free immobilization of glycans for affinity chromatography using glycosylsulfonohydrazide donors

  摘要：

  A variety of applications in glycobiology exploit affinity chromatography through the immobilization of glycans to a solid support. Although several strategies are known, they may provide certain advantages or disadvantages in how the sugar is attached to the affinity matrix. Additionally, the products of some methods may be hard to characterize chemically due to non-specific reactions. The lack of specificity in standard immobilization reactions makes affinity chromatography with expensive oligosaccharides challenging. As a result, methods for specific and efficient immobilization of oligosaccharides remain of interest. Herein, we present a method for the immobilization of saccharides using N'-glycosylsulfonohydrazide (GSH) carbohydrate donors. We have compared GSH immobilization to known strategies, including the use of divinyl sulfone (DVS) and cyanuric chloride (CC), for the generation of affinity matrices. We compared immobilization methods by determining their immobilization efficiency, based on a comparison of the mass of immobilized carbohydrate and the concentration of active binding sites (determined using lectins). Our results indicate that immobilization using GSH donors can provide comparable amounts of carbohydrate epitopes on solid support while consuming almost half of the material required for DVS immobilization. The lectin binding capacity observed for these two methods suggests that GSH immobilization is more efficient. We propose that this method of oligosaccharide immobilization will be an important tool for glycobiologists working with precious glycan samples purified from biological sources. (C) 2015 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.carres.2015.09.005

文献信息

• Simple preparations of alkyl and cycloalkyl α-glycosides of maltose, cellobiose, and lactose
  作者：Shinkiti Koto、Motoko Hirooka、Takako Tashiro、Motokazu Sakashita、Masaharu Hatachi、Takayuki Kono、Miho Shimizu、Nahoko Yoshida、Sayaka Kurasawa、Natsuko Sakuma、Sunao Sawazaki、Akihiro Takeuchi、Naomi Shoya、Emi Nakamura

  DOI：10.1016/j.carres.2004.07.016

  日期：2004.10

  allyl, 4-pentenyl, and benzyl α-glycosides of maltose, cellobiose, and lactose were prepared (17–77% yield; α/β = 70/30–96/4) via a direct reaction of the free disaccharides with a binary AcBr–AcOH mixture, followed by glycosidation with alcohol using FeCl3 in MeNO2 or CH2Cl2, Zemplen deacetylation, and resolution of the anomeric mixture of glycosides by chromatography. Using MeCN as solvent for the

  摘要麦芽糖，纤维二糖和乳糖的烷基，环烷基，烯丙基，4-戊烯基和苄基α-糖苷的制备是（17-77％的收率；α/β= 70 / 30-96 / 4）。游离的二糖与二元AcBr-AcOH混合物混合，然后使用FeNO3在MeNO2或CH2Cl2中与酒精进行糖基化，Zemplen脱乙酰化，并通过色谱分离糖苷的异头混合物。使用MeCN作为糖苷化步骤的溶剂，还制备了相应的β-生物苷（16-61％产率；α/β= 25 / 75-5 / 95）。
• WO2008/124729
  申请人：——

  公开号：——

  公开（公告）日：——
• Protecting group-free immobilization of glycans for affinity chromatography using glycosylsulfonohydrazide donors
  作者：Daniel Hernandez Armada、Jobette T. Santos、Michele R. Richards、Christopher W. Cairo

  DOI：10.1016/j.carres.2015.09.005

  日期：2015.11

  A variety of applications in glycobiology exploit affinity chromatography through the immobilization of glycans to a solid support. Although several strategies are known, they may provide certain advantages or disadvantages in how the sugar is attached to the affinity matrix. Additionally, the products of some methods may be hard to characterize chemically due to non-specific reactions. The lack of specificity in standard immobilization reactions makes affinity chromatography with expensive oligosaccharides challenging. As a result, methods for specific and efficient immobilization of oligosaccharides remain of interest. Herein, we present a method for the immobilization of saccharides using N'-glycosylsulfonohydrazide (GSH) carbohydrate donors. We have compared GSH immobilization to known strategies, including the use of divinyl sulfone (DVS) and cyanuric chloride (CC), for the generation of affinity matrices. We compared immobilization methods by determining their immobilization efficiency, based on a comparison of the mass of immobilized carbohydrate and the concentration of active binding sites (determined using lectins). Our results indicate that immobilization using GSH donors can provide comparable amounts of carbohydrate epitopes on solid support while consuming almost half of the material required for DVS immobilization. The lectin binding capacity observed for these two methods suggests that GSH immobilization is more efficient. We propose that this method of oligosaccharide immobilization will be an important tool for glycobiologists working with precious glycan samples purified from biological sources. (C) 2015 Elsevier Ltd. All rights reserved.