lithospermic acid C

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 2-芳基苯并呋喃类黄酮
• 英文名称: lithospermic acid C
• 英文别名: lithospermic acid；cis-Lithospermic acid；(2R,3S)-4-[(E)-3-[(1R)-1-carboxy-2-(3,4-dihydroxyphenyl)ethoxy]-3-oxoprop-1-enyl]-2-(3,4-dihydroxyphenyl)-7-hydroxy-2,3-dihydro-1-benzofuran-3-carboxylic acid
• 化学式: C₂₇H₂₂O₁₂
• 分子量: 538.464
• InChiKey: UJZQBMQZMKFSRV-XPXASJQOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.8
• 重原子数：
  39
• 可旋转键数：
  9
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.15
• 拓扑面积：
  211
• 氢给体数：
  7
• 氢受体数：
  12

反应信息

• 作为反应物：
  描述：

  lithospermic acid C 在 N-甲基吗啉 、 benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate 、 1-羟基苯并三唑 、 sodium hydroxide 作用下， 以 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 12.0h， 生成 (2R)-3-(3,4-dihydroxyphenyl)-2-hydroxypropanoic acid (S)-PGME amide
  参考文献：
  名称：

  Diastereomers of lithospermic acid and lithospermic acid B from Monarda fistulosa and Lithospermum erythrorhizon

  摘要：

  Monardic acids A (1) and B (2), which are (7R,8R) diastereomers of lithospermic acid (LA) and lithospermic acid B, respectively, were isolated from Monarda fistulosa. A (75,8R) isomer (3) of LA was also isolated from this plant, and a (7R,8S) isomer (7) of LA was obtained from Lithospermum erythrorhizon. The absolute configuration of 1 was confirmed by analysis of its hydrolysates, 7-epiblechnic acid and 2R-3-(3,4-dihydroxyphenyl)-2-hydroxypropanoic acid. The configuration in the dihydrobenzofuran moieties of 2, 3, and 7 was extrapolated by using the phenylglycine methyl ester method and a Cotton effect at approximately 250-260 nm in their electronic circular dichroism spectra. Diastereomers (1-3 and 7) displayed moderate hyaluronidase inhibitory and histamine release inhibitory activities. (C) 2013 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.fitote.2013.08.009

文献信息

• Diastereomers of lithospermic acid and lithospermic acid B from Monarda fistulosa and Lithospermum erythrorhizon
  作者：Toshihiro Murata、Kanae Oyama、Minami Fujiyama、Bunmei Oobayashi、Kaoru Umehara、Toshio Miyase、Fumihiko Yoshizaki

  DOI：10.1016/j.fitote.2013.08.009

  日期：2013.12

  Monardic acids A (1) and B (2), which are (7R,8R) diastereomers of lithospermic acid (LA) and lithospermic acid B, respectively, were isolated from Monarda fistulosa. A (75,8R) isomer (3) of LA was also isolated from this plant, and a (7R,8S) isomer (7) of LA was obtained from Lithospermum erythrorhizon. The absolute configuration of 1 was confirmed by analysis of its hydrolysates, 7-epiblechnic acid and 2R-3-(3,4-dihydroxyphenyl)-2-hydroxypropanoic acid. The configuration in the dihydrobenzofuran moieties of 2, 3, and 7 was extrapolated by using the phenylglycine methyl ester method and a Cotton effect at approximately 250-260 nm in their electronic circular dichroism spectra. Diastereomers (1-3 and 7) displayed moderate hyaluronidase inhibitory and histamine release inhibitory activities. (C) 2013 Elsevier B.V. All rights reserved.