4-methylumbelliferyl β-laminarapentaoside | 618879-32-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 4-methylumbelliferyl β-laminarapentaoside
• 英文别名: 7-[(2S,3R,4S,5R,6R)-4-[(2S,3R,4S,5R,6R)-4-[(2S,3R,4S,5R,6R)-4-[(2S,3R,4S,5R,6R)-3,5-dihydroxy-6-(hydroxymethyl)-4-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4-methylchromen-2-one
• CAS: 618879-32-6
• 化学式: C₄₀H₅₈O₂₈
• 分子量: 986.884
• InChiKey: LZIPXOKICNWCJY-ULQSJXLRSA-N

物化性质

• 沸点：
  1326.9±65.0 °C(Predicted)
• 密度：
  1.78±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -7.2
• 重原子数：
  68
• 可旋转键数：
  15
• 环数：
  7.0
• sp3杂化的碳原子比例：
  0.78
• 拓扑面积：
  442
• 氢给体数：
  16
• 氢受体数：
  28

反应信息

• 作为反应物：
  描述：

  苯甲醛二甲缩醛 、 4-methylumbelliferyl β-laminarapentaoside 在 对甲苯磺酸 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 生成 4-methylumbelliferyl ω-4,6-O-benzylidene-β-laminarapentaoside
  参考文献：
  名称：

  Enzymatic synthesis of 4-methylumbelliferyl (1→3)-β-d-glucooligosaccharides—new substrates for β-1,3-1,4-d-glucanase

  摘要：

  The transglycosylation reactions catalyzed by beta-1,3-D-glucanases (laminaranases) were used to synthesize a number of 4-methylumbelliferyl (MeUmb) (1 --> 3)-beta-D-gluco-oligosaccharides having the common structure [beta-D-Glcp-(1 --> 3)](n)-beta-D-Glcp-MeUmb, where n = 1-5. The beta-1,3-D-glucanases used were purified from the culture liquid of Oerskovia sp. and from a homogenate of the marine mollusc Spisula sachalinensis. Laminaran and curdlan were used as (1 --> 3)-beta-D-glucan donor substrates, while MeUmb-beta-D-glucoside (MeUmbGlcp) was employed as a transglycosylation acceptor. Modification of [beta-D-Glcp-(1 --> 3)](2)-beta-D-Glcp-MeUmb (MeUmbG(3)) gives 4,6-O-benzylidene-D-glucopyranosyl or 4,6-O-ethylidene-D-glucopyranosyl groups at the non-reducing end of artificial oligosaccharides. The structures of all oligosaccharides obtained were solved by H-1 and C-13 NMR spectroscopy and electrospray tandem mass spectrometry. The synthetic oligosaccharides were shown to be substrates for a beta-1,3-1,4-D-glucanase from Rhodothermus marinus, which releases MeUmb from beta-di- and beta-triglucosides and from acetal-protected beta-triglucosides. When acting upon substrates with d.p. > 3, the enzyme exhibits an endolytic activity, primarily cleaving off MeUrnbGlcP and MeUmbG(2). (C) 2003 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0008-6215(03)00199-x

文献信息

• Enzymatic synthesis of 4-methylumbelliferyl (1→3)-β-d-glucooligosaccharides—new substrates for β-1,3-1,4-d-glucanase
  作者：Rainer Borriss、Martin Krah、Harry Brumer、Maxim A. Kerzhner、Dina R. Ivanen、Elena V. Eneyskaya、Lyudmila A. Elyakova、Sergei M. Shishlyannikov、Konstantin A. Shabalin、Kirill N. Neustroev

  DOI：10.1016/s0008-6215(03)00199-x

  日期：2003.7

  The transglycosylation reactions catalyzed by beta-1,3-D-glucanases (laminaranases) were used to synthesize a number of 4-methylumbelliferyl (MeUmb) (1 --> 3)-beta-D-gluco-oligosaccharides having the common structure [beta-D-Glcp-(1 --> 3)](n)-beta-D-Glcp-MeUmb, where n = 1-5. The beta-1,3-D-glucanases used were purified from the culture liquid of Oerskovia sp. and from a homogenate of the marine mollusc Spisula sachalinensis. Laminaran and curdlan were used as (1 --> 3)-beta-D-glucan donor substrates, while MeUmb-beta-D-glucoside (MeUmbGlcp) was employed as a transglycosylation acceptor. Modification of [beta-D-Glcp-(1 --> 3)](2)-beta-D-Glcp-MeUmb (MeUmbG(3)) gives 4,6-O-benzylidene-D-glucopyranosyl or 4,6-O-ethylidene-D-glucopyranosyl groups at the non-reducing end of artificial oligosaccharides. The structures of all oligosaccharides obtained were solved by H-1 and C-13 NMR spectroscopy and electrospray tandem mass spectrometry. The synthetic oligosaccharides were shown to be substrates for a beta-1,3-1,4-D-glucanase from Rhodothermus marinus, which releases MeUmb from beta-di- and beta-triglucosides and from acetal-protected beta-triglucosides. When acting upon substrates with d.p. > 3, the enzyme exhibits an endolytic activity, primarily cleaving off MeUrnbGlcP and MeUmbG(2). (C) 2003 Elsevier Science Ltd. All rights reserved.