O-α-D-xylopyranosyl-(1->6)-D-glucopyranose | 95272-12-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: O-α-D-xylopyranosyl-(1->6)-D-glucopyranose
• 英文别名: α-D-1,6-xylopyranose-D-glucopyranose；α-D-xylp(1-6)-D-Glcp；isoprimeverose；6-O-alpha-D-xylopyranosyl-D-glucopyranose；(3R,4S,5S,6R)-6-[[(2R,3R,4S,5R)-3,4,5-trihydroxyoxan-2-yl]oxymethyl]oxane-2,3,4,5-tetrol
• CAS: 95272-12-1
• 化学式: C₁₁H₂₀O₁₀
• 分子量: 312.274
• InChiKey: QYNRIDLOTGRNML-OTBYALQMSA-N

物化性质

• 沸点：
  608.4±55.0 °C(Predicted)
• 密度：
  1.74±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -4.7
• 重原子数：
  21
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  169
• 氢给体数：
  7
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  O-α-D-xylopyranosyl-(1->6)-D-glucopyranose 在 Bacillus α-D-xylosidase 作用下， 反应 2.0h， 生成 D-吡喃木糖 、 D-葡萄糖 、 O-α-D-xylopyranosyl-(1-4)-O-α-D-xylopyranosyl-(1-6)-D-glucopyranose
  参考文献：
  名称：

  Zong, Ning; Kamiyama, Yoshi; Yasui, Tsuneo, Agricultural and Biological Chemistry, 1989, vol. 53, # 12, p. 3329 - 3332

  摘要：

  DOI：
• 作为产物：
  描述：

  alkaline earth salt of/the/ methylsulfuric acid 反应 26.0h， 以2.52 g的产率得到O-α-D-xylopyranosyl-(1->6)-D-glucopyranose
  参考文献：
  名称：

  Zong, Ning; Kamiyama, Yoshi; Yasui, Tsuneo, Agricultural and Biological Chemistry, 1989, vol. 53, # 8, p. 2129 - 2140

  摘要：

  DOI：

文献信息

• Sequencing of xyloglucan oligosaccharides by partial Driselase digestion: the preparation and quantitative and qualitative analysis of two new tetrasac
  作者：Ester P. Lorences、Stephen C. Fry

  DOI：10.1016/0008-6215(94)00170-7

  日期：1994.10

  distinguished by the products of their partial digestion with Driselase, which hydrolyses the glucosidic bonds sequentially from the non-reducing terminus: a and b yielded cellobiose and Xyl-->Glc-->Glc, respectively showing that they were [formula: see text] and [formula: see text] respectively. Tetrasaccharide b was chromatographically identical, upon HPLC on Dionex CarboPac PA1, with the tetrasaccharide produced

  通过轻度酸水解将得自罗莎木葡聚糖的五糖（XXG）[分子式：见正文]转化为两种异构的四糖a和b（Xyl1.Glc3）。在90°C下于2 M三氟乙酸中水解的过程中，在20-40分钟后可获得a和b的最佳产率。通过制备纸色谱法和高压液相色谱法（HPLC）纯化每种四糖。两种异构体的特征在于它们用Driselase部分消化的产物，后者从非还原末端依次水解了糖苷键：a和b分别产生纤维二糖和Xyl-> Glc-> Glc，表明它们是[公式：参见文字]和[公式：参见文字]。在Dionex CarboPac PA1上进行HPLC分析后，四糖b的色谱图相同 通过Tropaeolumα-D-木糖苷酶的作用从XXG产生的四糖中得到支持，从而支持了所提出的结构。木糖葡聚糖寡糖通过完全Driselase消化后异伯葡萄糖（Xyl-> Glc）的产量定量测定。
• Identification of the Gene Encoding Isoprimeverose-producing Oligoxyloglucan Hydrolase in Aspergillus oryzae
  作者：Tomohiko Matsuzawa、Yasushi Mitsuishi、Akihiko Kameyama、Katsuro Yaoi

  DOI：10.1074/jbc.m115.701474

  日期：2016.3

  Aspergillus oryzae produces a unique -glucosidase, isoprimeverose-producing oligoxyloglucan hydrolase (IPase), that recognizes and releases isoprimeverose (-d-xylopyranose-(16)-d-glucopyranose) units from the non-reducing ends of oligoxyloglucans. A gene encoding A. oryzae IPase, termed ipeA, was identified and expressed in Pichia pastoris. With the exception of cellobiose, IpeA hydrolyzes a variety of oligoxyloglucans and is a member of the glycoside hydrolase family 3. Xylopyranosyl branching at the non-reducing ends was vital for IPase activity, and galactosylation at a -1,6-linked xylopyranosyl side chain completely abolished IpeA activity. Hepta-oligoxyloglucan saccharide (Xyl(3)Glc(4)) substrate was preferred over tri- (Xyl(1)Glc(2)) and tetra- (Xyl(2)Glc(2)) oligoxyloglucan saccharides substrates. IpeA transferred isoprimeverose units to other saccharides, indicating transglycosylation activity. The ipeA gene was expressed in xylose and xyloglucan media and was strongly induced in the presence of xyloglucan endo-xyloglucanase-hydrolyzed products. This is the first study to report the identification of a gene encoding IPase in eukaryotes.
• Kato, Yoji; Matsuda, Kazuo, Agricultural and Biological Chemistry, 1980, vol. 44, # 8, p. 1751 - 1758
  作者：Kato, Yoji、Matsuda, Kazuo

  DOI：——

  日期：——
• JOSIMURA, JOSINORI;KITABATA, SUMIO
  作者：JOSIMURA, JOSINORI、KITABATA, SUMIO

  DOI：——

  日期：——