tert-butyl (1S)-1-(2-decanoyloxyethyl)-6,7-dimethoxy-3,4-dihydro-1H-isoquinoline-2-carboxylate | 1462335-66-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 四氢异喹啉
• 英文名称: tert-butyl (1S)-1-(2-decanoyloxyethyl)-6,7-dimethoxy-3,4-dihydro-1H-isoquinoline-2-carboxylate
• CAS: 1462335-66-5
• 化学式: C₂₈H₄₅NO₆
• 分子量: 491.668
• InChiKey: OHJFIPZULIVLIX-QHCPKHFHSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.9
• 重原子数：
  35
• 可旋转键数：
  16
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  74.3
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为产物：
  描述：

  乙烯基癸酸 、 在 sodium sulfate 、 三乙胺 作用下， 以 甲基叔丁基醚 为溶剂， 生成 tert-butyl (1R)-1-(2-hydroxyethyl)-6,7-dimethoxy-3,4-dihydro-1H-isoquinoline-2-carboxylate 、 tert-butyl (1S)-1-(2-decanoyloxyethyl)-6,7-dimethoxy-3,4-dihydro-1H-isoquinoline-2-carboxylate
  参考文献：
  名称：

  Enzymatic reactions for the preparation of homocalycotomine enantiomers

  摘要：

  Homocalycotomine enantiomers (R)-4 and (S)-4 were prepared by the Candida antarctica lipase B (CAL-B)-catalysed asymmetric O-acylation of N-Boc-protected 2-(6,7-dimethoxy-1,2,3,4-tetrahydroisoquinolin-1-yl)ethanol (+/-)-1. The preliminary small-scale experiments were performed either in a continuous-flow system or as batch reactions, while the preparative-scale resolution was carried out in two steps with vinyl acetate as the acyl donor in the presence of Et3N and Na2SO4 in toluene at 3 C, as a batch reaction. Treatment of the resulting amino alcohol (S)-1 and amino ester (R)-3 (ee >= 94%) with 18% HCl, and then with 5 M NaOH, furnished the desired (R)-4 and (S)-4 without a decrease in the enantiomeric excess (ee >= 94%). (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2013.07.025