L-aspartic acid dimethylester isocyanate | 120219-15-0

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: L-aspartic acid dimethylester isocyanate
• 英文别名: N-carbonyl-L-aspartic acid dimethyl ester；(S)-2-Isocyanato-bernsteinsaeure-dimethylester；N-Carbonyl-L-asparaginsaeure-dimethylester
• CAS: 120219-15-0
• 化学式: C₇H₉NO₅
• 分子量: 187.152
• InChiKey: LDCYAIMXNIDIIJ-YFKPBYRVSA-N

物化性质

• 沸点：
  249.0±30.0 °C(Predicted)
• 密度：
  1.22±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -0.57
• 重原子数：
  13.0
• 可旋转键数：
  4.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  82.03
• 氢给体数：
  0.0
• 氢受体数：
  6.0

反应信息

• 作为反应物：
  描述：

  L-aspartic acid dimethylester isocyanate 在 palladium on activated charcoal 氢气 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 20.0 ℃ 、100.0 kPa 条件下， 反应 2.0h， 生成 N-(methyl 6,7-dideoxy-4-O-methyl-α-D-glucoheptopyranoside-7-ylaminocarbonyl)-L-aspartic acid dimethylester
  参考文献：
  名称：

  Synthesis of novel amino acid glycoside conjugates

  摘要：

  A new class of non-anomeric amino acid glycoconjugates can be prepared starting from either omega-amino- or omega-halodeoxyglucosides. Treatment of an ether-protected methyl 7-amino-6,7-dideoxy-alpha-D-glucoheptopyranoside with methyl aspartate isocyanate gave an urea-linked conjugate of methyl glucoheptopyranoside and aspartic acid. Nucleophilic displacement of the ether-protected methyl 6-chloro-6-deoxy-alpha-D-glucopyranoside with potassium succinimide followed by imide ring opening and amidation of the succinic acid monoamide with dimethyl iminodiacetate led to a conjugate of methyl 6-amino-6-deoxy-alpha-D-glucopyranoside and iminodiacetate bridged by succinate. (C) 1997 Elsevier Science Ltd.

  DOI：

  10.1016/s0008-6215(97)00091-8
• 作为产物：
  描述：

  L-天冬氨酸二甲酯 、 氯甲酸三氯甲酯 以 1,4-二氧六环 为溶剂， 反应 8.0h， 以81%的产率得到L-aspartic acid dimethylester isocyanate
  参考文献：
  名称：

  Synthesis of novel amino acid glycoside conjugates

  摘要：

  A new class of non-anomeric amino acid glycoconjugates can be prepared starting from either omega-amino- or omega-halodeoxyglucosides. Treatment of an ether-protected methyl 7-amino-6,7-dideoxy-alpha-D-glucoheptopyranoside with methyl aspartate isocyanate gave an urea-linked conjugate of methyl glucoheptopyranoside and aspartic acid. Nucleophilic displacement of the ether-protected methyl 6-chloro-6-deoxy-alpha-D-glucopyranoside with potassium succinimide followed by imide ring opening and amidation of the succinic acid monoamide with dimethyl iminodiacetate led to a conjugate of methyl 6-amino-6-deoxy-alpha-D-glucopyranoside and iminodiacetate bridged by succinate. (C) 1997 Elsevier Science Ltd.

  DOI：

  10.1016/s0008-6215(97)00091-8

文献信息

• Synthetic Approaches To Obtain Amino Acid Adducts of 4,4′-Methylenediphenyl Diisocyanate
  作者：Gabriele Sabbioni、Nagaraju Dongari、Siegfried Schneider、Anoop Kumar

  DOI：10.1021/tx300347e

  日期：2012.12.17

  obtain amino acid adducts of MDI. We synthesized and isolated MDI adducts of aspartic acid, glutamic acid, cysteine, and valine. The new adducts were characterized by LC-MS/MS and NMR. We synthesized the corresponding isotope-labeled MDI adducts to develop analytical methods using LC-MS/MS. Glutathione adducts of isocyanates are an important way of transportation of the reactive isocyanates to distant

  4,4'-亚甲基二苯基二异氰酸酯（MDI）是化学工业中最重要的异氰酸酯。暴露于MDI后，肺部过敏和哮喘是主要的损害类型。MDI的白蛋白加合物可能与致敏反应的病因有关。因此，必须有敏感的和特定的生物标记物，例如血液蛋白加合物，以监测暴露于异氰酸酯的人。为了发现体内存在的血液蛋白与新的异氰酸酯加合物，需要新的合成标准品。为此，我们开发了五种方法来获得MDI的氨基酸加合物。我们合成并分离了天冬氨酸，谷氨酸，半胱氨酸和缬氨酸的MDI加合物。新的加合物通过LC-MS / MS和NMR进行表征。我们合成了相应的同位素标记的MDI加合物，以开发使用LC-MS / MS的分析方法。异氰酸酯的谷胱甘肽加合物是将反应性异氰酸酯转移到远离原始暴露部位的较远部位的一种重要方式。因此，我们使用了MDI的N-乙酰基-半胱氨酸加成物：N-乙酰基-S [[[4-（4-氨基苄基）苯基]氨基甲酰基]-半胱氨酸（MDI-AcCys）和N-乙酰基-S