O-β-D-galactopyranosyl-(1->3)-O-β-D-galactopyranosyl-(1-4)-D-glucitol | 13295-84-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: O-β-D-galactopyranosyl-(1->3)-O-β-D-galactopyranosyl-(1-4)-D-glucitol
• 英文别名: O-β-D-Galactopyranosyl-(1->3)-O-β-D-galactopyranosyl-(1->4)-D-sorbitol；Gal(b1-3)Gal(b1-?)Glc-ol；(2S,3R,4R,5R)-4-[(2S,3R,4S,5S,6R)-3,5-dihydroxy-6-(hydroxymethyl)-4-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxyhexane-1,2,3,5,6-pentol
• CAS: 13295-84-6
• 化学式: C₁₈H₃₄O₁₆
• 分子量: 506.458
• InChiKey: IGGRGXIBKYLLRJ-KZCWKWOXSA-N

物化性质

• 沸点：
  970.5±65.0 °C(Predicted)
• 密度：
  1.75±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -6.8
• 重原子数：
  34
• 可旋转键数：
  11
• 环数：
  2.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  280
• 氢给体数：
  12
• 氢受体数：
  16

反应信息

• 作为产物：
  描述：

  alpha-甲基葡萄糖甙 、 乳糖醇 在 β-galactosidase from bovine testes EC 3.2.1.23 、 Na₂H₂PO₄*12H₂O 、 柠檬酸 作用下， 反应 48.0h， 以2.2%的产率得到methyl β-D-galactopyranosyl-<1->3>-α-D-glucopyranoside
  参考文献：
  名称：

  利用牛睾丸中的β-半乳糖苷酶合成低聚糖作为潜在的新型食品成分并进行高级酶促反应

  摘要：

  牛睾丸的β-半乳糖苷酶（EC 3.2.1.23）促进半乳糖单元向歧管衍生物中的葡萄糖或含半乳糖的残基转移，从而建立β1→3键。

  DOI：

  10.1016/j.tet.2004.01.029

文献信息

• Formation of oligosaccharides from lactitol by Aspergillus oryzae β-d-galactosidase
  作者：Shuichi Yanahira、Toshiaki Suguri、Takafumi Yakabe、Yoshihiro Ikeuchi、Goro Hanagata、Eiki Deya

  DOI：10.1016/s0008-6215(00)91002-4

  日期：1992.7

  Six oligosaccharides were first formed from lactitol by a transgalactosylation reaction catalyzed by Aspergillus oryzae beta-D-galactosidase. From the results of methylation analysis, MS, and H-1- and C-13-NMR studies, it was concluded that these oligosaccharides are O-beta-D-galactopyranosyl-(1 --> 4)-O-beta-D-galactopyranosyl-(1 --> 4)-D-glucitol, O-beta-D-galactopyranosyl-(1 --> 3)-O-beta-D-galactopyranosyl-(1 --> 4)-D-glucitol, O-beta-D-galactopyranosyl-(1 --> 4)-O-beta-D-galactopyranosyl-(1 --> 6)-D-glucitol, O-beta-D-galactopyyranosyl-(1 --> 6)-O-beta-D-galactopyranosyl-(1 --> 6)-D-glucitol, O-beta-D-galactopyranosyl-(1 --> 6)-O-beta-D-galactopyranosyl-(1 --> 4)-D-glucitol, O-beta-D-galactopyranosyl-(1 --> 4) and [O-beta-D-galactopyranosyl-(1 --> 5)]-D-glucitol, and O-beta-D-galactopyranosyl-(1 --> 4)-[O-beta-D-galactopyranosyl-(1 --> 1)]-D-glucitol. The last three are newly observed oligosaccharides.