(2R,3R,4S)-2-[(2S,3R,4R,5S,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,4-dihydroxy-3,4-dihydro-2H-pyran-6-carboxylic acid

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (2R,3R,4S)-2-[(2S,3R,4R,5S,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,4-dihydroxy-3,4-dihydro-2H-pyran-6-carboxylic acid
• 化学式: C₁₄H₂₁NO₁₁
• 分子量: 379.321
• InChiKey: DLGJWSVWTWEWBJ-BVQOOYIMSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -3.3
• 重原子数：
  26
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  195
• 氢给体数：
  7
• 氢受体数：
  11

反应信息

• 作为产物：
  描述：

  hyaluronic acid 在 hyaluronidase*se-BH 作用下， 以 水 为溶剂， 反应 24.0h， 生成 (2R,3R,4S)-2-[(2S,3R,4R,5S,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,4-dihydroxy-3,4-dihydro-2H-pyran-6-carboxylic acid
  参考文献：
  名称：

  Determination of modification degree in BDDE-modified hyaluronic acid hydrogel by SEC/MS

  摘要：

  Determination of modification degree in BDDE-modified hyaluronic acid (HA) hydrogel is of particular interest. In this paper, three crosslinking parameters (degree of total modification, t-MOD; degree of cross-link modification, c-MOD; degree of pendent modification, p-MOD) are defined and determined by quantification of the modified fragments in hydrogel digestion by size exclusion chromatography combined with mass spectrometry (SEC-MS). The digestion products of a novel hyaluronidase HAase-B produced by Bacillus sp. A50 are studied and only a few modified fragments are identified by H-1 NMR and MS.As a result, Three HA hydrogels prepared in lab have different t-MOD, c-MOD and p-MOD, but the ratio of c-MOD to p-MOD result in the almost same value of 75%. Hydrogel products from Q-Med have nearly same t-MOD about 0.8% and c-MOD about 0.1%, the ratio of c-MOD to p-MOD is about 13%. Hydrogels from ANTEIS S.A all have much higher t-MOD values, the ratio of c-MOD and p-MOD is about 8%. (C) 2015 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.carbpol.2015.05.050

文献信息

• Determination of modification degree in BDDE-modified hyaluronic acid hydrogel by SEC/MS
  作者：Biao Yang、Xueping Guo、Hengchang Zang、Jianjian Liu

  DOI：10.1016/j.carbpol.2015.05.050

  日期：2015.10

  Determination of modification degree in BDDE-modified hyaluronic acid (HA) hydrogel is of particular interest. In this paper, three crosslinking parameters (degree of total modification, t-MOD; degree of cross-link modification, c-MOD; degree of pendent modification, p-MOD) are defined and determined by quantification of the modified fragments in hydrogel digestion by size exclusion chromatography combined with mass spectrometry (SEC-MS). The digestion products of a novel hyaluronidase HAase-B produced by Bacillus sp. A50 are studied and only a few modified fragments are identified by H-1 NMR and MS.As a result, Three HA hydrogels prepared in lab have different t-MOD, c-MOD and p-MOD, but the ratio of c-MOD to p-MOD result in the almost same value of 75%. Hydrogel products from Q-Med have nearly same t-MOD about 0.8% and c-MOD about 0.1%, the ratio of c-MOD to p-MOD is about 13%. Hydrogels from ANTEIS S.A all have much higher t-MOD values, the ratio of c-MOD and p-MOD is about 8%. (C) 2015 Elsevier Ltd. All rights reserved.