(2S,3S)-2--N-methylamino>-3-hydroxy-3-(4-iodophenyl)propionic acid | 161634-78-2

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 苯丙酸
• 英文名称: (2S,3S)-2--N-methylamino>-3-hydroxy-3-(4-iodophenyl)propionic acid
• 英文别名: (2S,3S)-3-hydroxy-3-(4-iodophenyl)-2-[methyl-[(2-methylpropan-2-yl)oxycarbonyl]amino]propanoic acid
• CAS: 161634-78-2
• 化学式: C₁₅H₂₀INO₅
• 分子量: 421.232
• InChiKey: CUGJSWNVHCWBDV-RYUDHWBXSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  22
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.47
• 拓扑面积：
  87.1
• 氢给体数：
  2
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  (2S,3S)-2--N-methylamino>-3-hydroxy-3-(4-iodophenyl)propionic acid 在 咪唑 、 双(2-氧代-3-恶唑烷基)次磷酰氯 、 potassium carbonate 、 N,N-二异丙基乙胺 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 59.0h， 生成
  参考文献：
  名称：

  Total Synthesis of Bouvardin, O-Methylbouvardin, and O-Methyl-N9-desmethylbouvardin

  摘要：

  Concise total syntheses of bouvardin (1) and O-methylbouvardin (2) are described based on the asymmetric synthesis of the N-methyl-erythro-beta-hydroxy-L-4-iodophenylalanine derivative 24, its coupling with the selectively protected N,O-4-dimethyl-L-DOPA methyl ester to provide 40, and subsequent incorporation into a surprisingly successful key Ullmann macrocyclization reaction for preparation of the 14-membered 13 (S)-hydroxycycloisodityrosine subunit 15 of the bicyclic hexapeptides. Coupling of 15 with BOCNH-D-Ala-Ala-NMe-Tyr(OMe)-Ala-OC6F5 followed by 18-membered-ring macrocyclization strategically conducted with formation of a secondary amide at a D-amino acid amine terminus (C-2-N-3 amide) provided O-methylbouvardin (2). Selective demethylation (BBr3) of 2 provided bouvardin (1) in excellent conversion (86%). The extensions of the studies to the preparation of O-methyl-N-9-desmethylbouvardin (51) are detailed and its solution-phase conformational properties examined by H-1 NMR in efforts which confirm that the additional minor conformation of 1 and 2 (ca. 10-15%) observed in nonpolar solvents (CDCl3, THF-d(8)), arise from a cis N-9-C-8 N-methylamide conformation.

  DOI：

  10.1021/ja00098a015
• 作为产物：
  描述：

  methyl (2E)-3-(4-iodophenyl)prop-2-enoate 在 titanium(IV) isopropylate 、 盐酸 、 叔丁基过氧化氢 、 重铬酸吡啶 、 L-(+)-酒石酸二异丙酯 、 二异丁基氢化铝 、 potassium carbonate 作用下， 以 四氢呋喃 、 正己烷 、 二氯甲烷 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 23.33h， 生成 (2S,3S)-2--N-methylamino>-3-hydroxy-3-(4-iodophenyl)propionic acid
  参考文献：
  名称：

  Total Synthesis of Bouvardin, O-Methylbouvardin, and O-Methyl-N9-desmethylbouvardin

  摘要：

  Concise total syntheses of bouvardin (1) and O-methylbouvardin (2) are described based on the asymmetric synthesis of the N-methyl-erythro-beta-hydroxy-L-4-iodophenylalanine derivative 24, its coupling with the selectively protected N,O-4-dimethyl-L-DOPA methyl ester to provide 40, and subsequent incorporation into a surprisingly successful key Ullmann macrocyclization reaction for preparation of the 14-membered 13 (S)-hydroxycycloisodityrosine subunit 15 of the bicyclic hexapeptides. Coupling of 15 with BOCNH-D-Ala-Ala-NMe-Tyr(OMe)-Ala-OC6F5 followed by 18-membered-ring macrocyclization strategically conducted with formation of a secondary amide at a D-amino acid amine terminus (C-2-N-3 amide) provided O-methylbouvardin (2). Selective demethylation (BBr3) of 2 provided bouvardin (1) in excellent conversion (86%). The extensions of the studies to the preparation of O-methyl-N-9-desmethylbouvardin (51) are detailed and its solution-phase conformational properties examined by H-1 NMR in efforts which confirm that the additional minor conformation of 1 and 2 (ca. 10-15%) observed in nonpolar solvents (CDCl3, THF-d(8)), arise from a cis N-9-C-8 N-methylamide conformation.

  DOI：

  10.1021/ja00098a015