4,8-anhydro-6,7-O-isopropylidene-2-C-methyl-1,2,9-trideoxy-L-threo-D-ido-nonitol | 274692-92-1

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二氧吡喃
• 英文名称: 4,8-anhydro-6,7-O-isopropylidene-2-C-methyl-1,2,9-trideoxy-L-threo-D-ido-nonitol
• 英文别名: (3aR,4S,6S,7R,7aS)-6-[(1R)-1-hydroxy-2-methylpropyl]-2,2,4-trimethyl-4,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-7-ol
• CAS: 274692-92-1
• 化学式: C₁₃H₂₄O₅
• 分子量: 260.331
• InChiKey: UFEZROCWTGOTSI-KICZLOJDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  18
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  68.2
• 氢给体数：
  2
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  4,8-anhydro-6,7-O-isopropylidene-2-C-methyl-1,2,9-trideoxy-L-threo-D-ido-nonitol 在 三氟乙酸 作用下， 以 甲醇 为溶剂， 反应 48.0h， 以65%的产率得到4,8-anhydro-2-C-methyl-1,2,9-trideoxy-L-threo-D-ido-nonitol
  参考文献：
  名称：

  Synthesis of Carba- and C-Fucopyranosides and Their Evaluation as α-Fucosidase Inhibitors − Analysis of an Unusual Conformation Adopted by an Amino-C-fucopyranoside

  摘要：

  Several carba- and C-fucopyranosides bearing a variety of substituents at their pseudoanomeric positions have been synthesized and tested as inhibitors of bovine kidney a-fucosidase. From the IC50 values, some conclusions about the structure-activity relationship could be drawn, The presence of a hydroxyl group close to the pseudoanomeric position, or the presence of an aromatic ring as substituent, were beneficial for inhibitory activity. A 1-(R)-amino-phenylmethyl C-fucopyranoside, the activity of which increased 40 times when the pH was changed from 5.0 to 7.0, adopted a C-4(1) conformation, in contrast to the C-1(4) form normally adopted by natural fucopyranosides. The conformation of this compound was analyzed in comparison with that of the 1-(S)-configured epimer, using NMR spectroscopy and molecular modeling.

  DOI：

  10.1002/1099-0690(200111)2001:21<4127::aid-ejoc4127>3.0.co;2-6
• 作为产物：
  描述：

  phenyl 2,3,4-tri-O-acetyl-1-thio-L-fucopyranoside 在 methyllithium lithium bromide 、 叔丁基锂 、 sodium methylate 、 碳酸氢钠 、 对甲苯磺酸 、 间氯过氧苯甲酸 作用下， 以 甲醇 、 乙醚 、 二氯甲烷 、 丙酮 、 正戊烷 为溶剂， 反应 35.09h， 生成 4,8-anhydro-6,7-O-isopropylidene-2-C-methyl-1,2,9-trideoxy-L-threo-D-ido-nonitol
  参考文献：
  名称：

  吡喃岩藻糖苷的carba-和C-糖基类似物的立体选择性合成

  摘要：

  分别合成了具有亚甲基的吡喃型岩藻糖苷类似物，而不是内型或外型异头氧、carba-和 C-吡喃型岩藻糖苷。为了合成 5a-carba-L-岩藻糖 (1)，研究了两种方法，它们共享一个共同的环醇结构单元 (8)，从 D-甘露醇衍生物的 SmI2 促进的碳环化中获得。第一条路线利用 Stork 自由基环化到 conduritol 衍生物 13 作为关键步骤，但未能得到甲硅烷基醚环。第二条路线提供了目标 1，包括环状硫酸盐 9 的区域选择性消除和双键的立体选择性氢化，由底物上的取代控制。为了合成 1-C-吡喃岩藻糖苷（37、38 和 42），采用了一种基于使用岩藻糖基苯基亚砜（35 和 41）的新方法。通过苯基亚磺酰基-锂交换产生异头碳负离子，其与亲电试剂反应并在异头中心保留构型。所需的岩藻糖亚砜是通过高度立体选择性硫糖基化反应从 L-岩藻糖制备的。

  DOI：

  10.1002/1099-0690(200004)2000:7<1285::aid-ejoc1285>3.0.co;2-z

文献信息

• Stereospecific Synthesis of α- and β-C-Glycosides from Glycosyl Sulfoxides:  Scope and Limitations
  作者：Mercedes Carpintero、Inés Nieto、Alfonso Fernández-Mayoralas

  DOI：10.1021/jo0014515

  日期：2001.3.1

  alpha-L-fuco-, alpha-D-gluco-, beta-D-gluco-, and alpha-D-mannopyranose have been synthesized from the corresponding glycosyl phenyl sulfoxide through phenylsulfinyl-lithium exchange, to generate an anomeric carbanion, and subsequent reaction with a carbon electrophile. The reactions were stereospecific and proceeded with retention of the configuration at the anomeric center. Improved yields of C-glycosides

  衍生自α-L-岩藻糖，α-D-葡萄糖-，β-D-葡萄糖-和α-D-甘露聚糖的C-糖苷是通过相应的糖基苯基亚砜通过苯亚磺酰基-锂交换合成的，以生成异头碳负离子，随后与碳亲电试剂反应。该反应是立体特异性的，并且在构型保持在异头中心处进行。通过逆添加方案获得提高的C-糖苷产率。用醛截留异头碳负离子的效果最佳。还研究了与酮，氯甲酸酯，腈和卤代烷的反应。讨论了反应的机理。
• Stereoselective Synthesis ofcarba- andC-Glycosyl Analogs of Fucopyranosides
  作者：Mercedes Carpintero、Carlos Jaramillo、Alfonso Fernández-Mayoralas

  DOI：10.1002/1099-0690(200004)2000:7<1285::aid-ejoc1285>3.0.co;2-z

  日期：2000.4

  double bond, controlled by substitution on the substrate. For the synthesis of 1-C-fucopyranosides (37, 38, and 42) a new method based on the use of fucosyl phenyl sulfoxides (35 and 41) was employed. An anomeric carbanion is generated through phenylsulfinyl-lithium exchange, which reacted with electrophiles with retention of configuration at the anomeric center. The required fucosyl sulfoxides were prepared

  分别合成了具有亚甲基的吡喃型岩藻糖苷类似物，而不是内型或外型异头氧、carba-和 C-吡喃型岩藻糖苷。为了合成 5a-carba-L-岩藻糖 (1)，研究了两种方法，它们共享一个共同的环醇结构单元 (8)，从 D-甘露醇衍生物的 SmI2 促进的碳环化中获得。第一条路线利用 Stork 自由基环化到 conduritol 衍生物 13 作为关键步骤，但未能得到甲硅烷基醚环。第二条路线提供了目标 1，包括环状硫酸盐 9 的区域选择性消除和双键的立体选择性氢化，由底物上的取代控制。为了合成 1-C-吡喃岩藻糖苷（37、38 和 42），采用了一种基于使用岩藻糖基苯基亚砜（35 和 41）的新方法。通过苯基亚磺酰基-锂交换产生异头碳负离子，其与亲电试剂反应并在异头中心保留构型。所需的岩藻糖亚砜是通过高度立体选择性硫糖基化反应从 L-岩藻糖制备的。
• Synthesis of Carba- and C-Fucopyranosides and Their Evaluation as α-Fucosidase Inhibitors − Analysis of an Unusual Conformation Adopted by an Amino-C-fucopyranoside
  作者：Mercedes Carpintero、Agatha Bastida、Eduardo García-Junceda、Jesús Jiménez-Barbero、Alfonso Fernández-Mayoralas

  DOI：10.1002/1099-0690(200111)2001:21<4127::aid-ejoc4127>3.0.co;2-6

  日期：2001.11

  Several carba- and C-fucopyranosides bearing a variety of substituents at their pseudoanomeric positions have been synthesized and tested as inhibitors of bovine kidney a-fucosidase. From the IC50 values, some conclusions about the structure-activity relationship could be drawn, The presence of a hydroxyl group close to the pseudoanomeric position, or the presence of an aromatic ring as substituent, were beneficial for inhibitory activity. A 1-(R)-amino-phenylmethyl C-fucopyranoside, the activity of which increased 40 times when the pH was changed from 5.0 to 7.0, adopted a C-4(1) conformation, in contrast to the C-1(4) form normally adopted by natural fucopyranosides. The conformation of this compound was analyzed in comparison with that of the 1-(S)-configured epimer, using NMR spectroscopy and molecular modeling.