Ethyl-β-D-xylopyranosid | 6743-62-0

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: Ethyl-β-D-xylopyranosid
• 英文别名: Aethyl-β-D-xylopyranosid；Ethyl beta-D-xylopyranoside；(2R,3R,4S,5R)-2-ethoxyoxane-3,4,5-triol
• CAS: 6743-62-0
• 化学式: C₇H₁₄O₅
• 分子量: 178.185
• InChiKey: UBUITGRMYNAZAX-XZBKPIIZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -1.6
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  79.2
• 氢给体数：
  3
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  ethyl-(tri-O-acetyl-β-D-xylopyranoside) 生成 Ethyl-β-D-xylopyranosid
  参考文献：
  名称：

  Janson; Lindberg, Acta Chemica Scandinavica (1947), 1959, vol. 13, p. 138,142

  摘要：

  DOI：

文献信息

• Studies on the Constituents of Cimicifuga Species. XVIII. Four New Xylosides from the Aerial Parts of Cimicifuga simplex WORMSK.
  作者：Akiko KUSANO、Makio SHIBANO、Genjiro KUSANO

  DOI：10.1248/cpb.44.167

  日期：——

  Four new xylosides (1-4) were isolated from the aerial parts of Cimicifuga simplex (Ranunculaceae), and their structures were determined to be 24-epi-7β-hydroxy-24-O-acetylhydroshengmanol-3-O-β-D-xylopyranoside (1), 25-O-methyl-24-O-acetylhydroshengmanol-3-O-β-D-xylopyranoside (2), 25-O-methyl-7β-hydroxy-24-O-acetylhydroshengmanol-3-O-β-D-xylopyranoside (3) and 25-O-methyl-1α-hydroxy-24-O-acetylhydroshengmanol-3-O-β-D-xylopyranoside (4).

  从类叶升麻(毛茛科)的地上部分中分离得到了4个新的木糖苷类化合物，其结构分别被鉴定为24-表-7β-羟基-24-O-乙酰基氢化升麻醇-3-O-β-D-吡喃木糖苷(1)、25-O-甲基-24-O-乙酰基氢化升麻醇-3-O-β-D-吡喃木糖苷(2)、25-O-甲基-7β-羟基-24-O-乙酰基氢化升麻醇-3-O-β-D-吡喃木糖苷(3)和25-O-甲基-1α-羟基-24-O-乙酰基氢化升麻醇-3-O-β-D-吡喃木糖苷(4)。
• Ethanolysis of selected catalysis by functionalized acidic ionic liquids: an unexpected effect of ILs structural functionalization on selectivity phenomena
  作者：Janusz Nowicki、Ewa Nowakowska-Bogdan

  DOI：10.1039/d1nj04885f

  日期：——

  Functionalization of acidic imidazolium ILs (addition of OH groups, deactivation of C2–H proton) changes the selectivity of the carbohydrate ethanolysis reaction.

  酸性咪唑类离子液体的官能化（加入OH基团，去活化C2-H质子）改变了碳水化合物乙醇解反应的选择性。
• Methods for improving the efficiency of simultaneous saccharification and fermentation reactions
  申请人：Gutierrez Christina

  公开号：US10138499B2

  公开（公告）日：2018-11-27

  The present disclosure is directed, in a first aspect, to the use of inverting beta-xylosidase enzymes to reduce byproduct formation and increase the yield of fermentation products, as well as, in a second aspect, to the use of retaining beta-xylosidase enzymes to improve production of alkyl-beta-xylopyranoside compounds, in a simultaneous saccharification and fermentation reactions.

  本公开的内容在第一方面是关于在同时进行的糖化和发酵反应中，使用倒置β-木糖苷酶来减少副产品的形成并提高发酵产品的产量，以及在第二方面是关于使用保留β-木糖苷酶来提高烷基-β-木吡喃糖苷化合物的产量。
• Separation of lignin and sugars from biomass pre-treatment liquors
  申请人：Stichting Energieonderzoek Centrum Nederland

  公开号：US10793927B2

  公开（公告）日：2020-10-06

  The invention relates to an improved process for separating lignin and monomeric sugars from a liquor comprising lignin and monomeric sugars in a solvent mixture of water and at least one organic solvent, which employs membrane filtration techniques such as nanofiltration and selective water removal, preferably by permeation through a membrane which is selective for water molecules. The invention further relates to a modular system for executing the process according to the invention. The process and system according to the invention are particularly suitable to be incorporated with pre-treatment of lignocellulosic biomass, in particular by organosolv fractionation or solvolysis.

  本发明涉及一种改进的工艺，用于从在水和至少一种有机溶剂的混合溶剂中含有木质素和单体糖的液体中分离木质素和单体糖，该工艺采用膜过滤技术，如纳滤和选择性脱水，最好是通过对水分子有选择性的膜进行渗透。本发明还涉及一种用于执行本发明工艺的模块化系统。根据本发明的工艺和系统特别适合与木质纤维素生物质的预处理相结合，尤其是通过有机溶胶分馏或溶解。
• METHODS FOR IMPROVING THE EFFICIENCY OF SIMULTANEOUS SACCHARIFICATION AND FERMENTATION REACTIONS
  申请人：Danisco US Inc.

  公开号：EP2516663B1

  公开（公告）日：2020-02-12