maryal

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: maryal
• 英文别名: (2R,3S,4S,6S)-3-[(2S,4R,5R,6R)-5-hydroxy-4-methoxy-6-methyloxan-2-yl]oxy-6-[[(2R,3R,4S)-4-methoxy-2-methyl-3,4-dihydro-2H-pyran-3-yl]oxy]-2-methyloxan-4-ol
• 化学式: C₂₀H₃₄O₉
• 分子量: 418.485
• InChiKey: FXCCXRYBFVGDRR-TYHBFHBZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.3
• 重原子数：
  29
• 可旋转键数：
  6
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.9
• 拓扑面积：
  105
• 氢给体数：
  2
• 氢受体数：
  9

反应信息

• 作为产物：
  描述：

  Acetic acid (2R,3R,4S,6S)-3-((2S,4R,5R,6R)-5-acetoxy-4-methoxy-6-methyl-tetrahydro-pyran-2-yloxy)-6-((2R,3R,4S)-4-methoxy-2-methyl-3,4-dihydro-2H-pyran-3-yloxy)-2-methyl-tetrahydro-pyran-4-yl ester 在 氢氧化钾 作用下， 以 甲醇 为溶剂， 反应 1.0h， 以89%的产率得到maryal
  参考文献：
  名称：

  Two oligosaccharides from Marsdenia roylei

  摘要：

  Phytochemical analysis of dried twigs of Marsdenia roylei (family Asclepiadaceae) has resulted in the isolation of a trisaccharide, maryal, and a diglycoside, rolinose. Their structures were determined as O-beta-D-oleandropyranosyl-(1-->4)-O-beta-D-digitoxopyranosyl-(1-->4)-D-cymaral and ethyl O-beta-D-oleandropyranosyl-(1-->4)-O-3-O-methyl-6-deoxy-beta-D-allopyranoside, respectively; by chemical degradation and spectroscopic methods. (C) 1999 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0031-9422(98)00691-8