allyl 2,3-di-O-benzyl-α-L-fucopyranoside | 228394-54-5

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: allyl 2,3-di-O-benzyl-α-L-fucopyranoside
• 英文别名: (2S,3R,4R,5S,6R)-2-methyl-4,5-bis(phenylmethoxy)-6-prop-2-enoxyoxan-3-ol
• CAS: 228394-54-5
• 化学式: C₂₃H₂₈O₅
• 分子量: 384.472
• InChiKey: ONXSEFUPFDANRT-CJBTUOLMSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  28
• 可旋转键数：
  9
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.39
• 拓扑面积：
  57.2
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  allyl 2,3-di-O-benzyl-α-L-fucopyranoside 在 吡啶 、 Wilkinson's catalyst 、 四丁基氟化铵 、 mercury dichloride 、 mercury(II) oxide 、 zinc dibromide 作用下， 以 四氢呋喃 、 乙醚 、 二氯甲烷 为溶剂， 反应 41.0h， 生成 Acetic acid (2S,3R,4R,5S,6R)-4,5-bis-benzyloxy-6-[(2R,3S,4R,5R)-5-(2-benzyloxycarbonylamino-6-oxo-1,6-dihydro-purin-9-yl)-3,4-dihydroxy-tetrahydro-furan-2-ylmethoxy]-2-methyl-tetrahydro-pyran-3-yl ester
  参考文献：
  名称：

  Structure and Total Synthesis of HF-7, a Neuroactive Glyconucleoside Disulfate from the Funnel-Web Spider Hololena curta

  摘要：

  Spider venom toxins have attracted considerable attention for their ability to block the action of excitatory amino acids such as glutamate and aspartate. A new neuroactive compound designated HF-7 was isolated in 1993 from the venom of a funnel-web spider, Hololena curta. HF-7 was shown to block kainate receptors and, albeit weakly, L-type calcium channels. Spectroscopic analysis established the structure of HF-7 as an unusual acetylated, disulfated fucopyranosyl guanosine, with the acetate ester attached at the 4-position of an alpha-linked fucose ring and two sulfates attached to the ribose ring. Because insufficient quantities of natural HF-7 were available for chemical degradation or X-ray diffraction analysis, total synthesis of three candidate structures was used to establish the identity of HF-7. Once HF-7 was fully characterized as 3'-O-(4 "-O-acetyl-alpha-L-fucopyranosyl)gnanosine-2',5-dusulfate, an improved, targeted synthesis of the natural product was developed.

  DOI：

  10.1021/ja990274q
• 作为产物：
  描述：

  溴甲苯 、 allyl α-L-fucopyranoside 在 B₂SnO 作用下， 生成 allyl 2,3-di-O-benzyl-α-L-fucopyranoside
  参考文献：
  名称：

  Structure and Total Synthesis of HF-7, a Neuroactive Glyconucleoside Disulfate from the Funnel-Web Spider Hololena curta

  摘要：

  Spider venom toxins have attracted considerable attention for their ability to block the action of excitatory amino acids such as glutamate and aspartate. A new neuroactive compound designated HF-7 was isolated in 1993 from the venom of a funnel-web spider, Hololena curta. HF-7 was shown to block kainate receptors and, albeit weakly, L-type calcium channels. Spectroscopic analysis established the structure of HF-7 as an unusual acetylated, disulfated fucopyranosyl guanosine, with the acetate ester attached at the 4-position of an alpha-linked fucose ring and two sulfates attached to the ribose ring. Because insufficient quantities of natural HF-7 were available for chemical degradation or X-ray diffraction analysis, total synthesis of three candidate structures was used to establish the identity of HF-7. Once HF-7 was fully characterized as 3'-O-(4 "-O-acetyl-alpha-L-fucopyranosyl)gnanosine-2',5-dusulfate, an improved, targeted synthesis of the natural product was developed.

  DOI：

  10.1021/ja990274q

文献信息

• Synthesis, NMR and Conformational Studies of Fucoidan Fragments 1:¹Desulfated 2,3- and 3,4-Branched Trisaccharide Fragments and Constituting Disaccharides
  作者：Elena A. Khatuntseva、Nadezhda E. Ustuzhanina、Georgij V. Zatonskii、Alexander S. Shashkov、Anatoly I. Usov、Nikolay E. Nifant'ev

  DOI：10.1080/07328300008544140

  日期：2000.1.1

  Two fucotriosides with vicinal disubstitution alpha -L-Fuc-(1-->2)[alpha -L-Fuc-(1-->3)[alpha -L-Fuc-OPr (1) and alpha -L-Fuc-(1-->3)[alpha -L-Fuc-(1-->4)]alpha -L-Fuc-OPr (2), which are related to fragments of natural polysaccharides fucoidans, have been synthesized together with constituent disaccharides 3-5, Spectral and conformational properties of tri- and disaccharides have been investigated by (1)H, (13)C and NOE NMR spectroscopy.
• SYNTHESIS, NMR, AND CONFORMATIONAL STUDIES OF FUCOIDAN FRAGMENTS 4: 4-MONO- AND 4,4′-DISULFATED (1→3)-α-<scp>l</scp>-FUCOBIOSIDE AND 4-SULFATED FUCOSIDE FRAGMENTS
  作者：Alexey G. Gerbst、Nadezhda E. Ustuzhanina、Alexey A. Grachev、Natalya S. Zlotina、Elena A. Khatuntseva、Dmitry E. Tsvetkov、Alexander S. Shashkov、Anatoly I. Usov、Nikolay E. Nifantiev

  DOI：10.1081/car-120013500

  日期：2002.9.23

  Propyl 4-O-sulfonato- and 4,4'-di-O-sulfonato-3-O-alpha-L-fucopyranosyl-alpha-L-fucopyranosides, which are related to fragments of brown algal fucoidans, have been synthesized. Their spectral (H-1 and C-13 NMR, NOE) and conformational properties have been studied in combination with molecular modeling and compared with the respective non-sulfated propyl fucobioside. Correlations between chemical shifts and conformational properties of these compounds were investigated.