[(2R,4aR,6R,7R,8S,8aR)-7-acetyloxy-2-phenyl-6-[(1S,2S,4S,5'R,6R,7S,8R,9S,12S,13R,16S)-5',7,9,13-tetramethylspiro[5-oxapentacyclo[10.8.0.02,9.04,8.013,18]icos-18-ene-6,2'-oxane]-16-yl]oxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl] acetate | 484002-05-3

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: [(2R,4aR,6R,7R,8S,8aR)-7-acetyloxy-2-phenyl-6-[(1S,2S,4S,5'R,6R,7S,8R,9S,12S,13R,16S)-5',7,9,13-tetramethylspiro[5-oxapentacyclo[10.8.0.02,9.04,8.013,18]icos-18-ene-6,2'-oxane]-16-yl]oxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl] acetate
• CAS: 484002-05-3
• 化学式: C₄₄H₆₀O₁₀
• 分子量: 748.954
• InChiKey: CXWQWARPBGGLGF-XLXGNINZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.1
• 重原子数：
  54
• 可旋转键数：
  7
• 环数：
  9.0
• sp3杂化的碳原子比例：
  0.77
• 拓扑面积：
  108
• 氢给体数：
  0
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  [(2R,4aR,6R,7R,8S,8aR)-7-acetyloxy-2-phenyl-6-[(1S,2S,4S,5'R,6R,7S,8R,9S,12S,13R,16S)-5',7,9,13-tetramethylspiro[5-oxapentacyclo[10.8.0.02,9.04,8.013,18]icos-18-ene-6,2'-oxane]-16-yl]oxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl] acetate 在 对甲苯磺酸 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 以72%的产率得到diosgenin-3-yl 2,3-di-O-acetyl-D-glucopyranoside
  参考文献：
  名称：

  Glycosyl Trifluoroacetimidates. 2. Synthesis of Dioscin and Xiebai Saponin I

  摘要：

  Two trisaccharide steroidal saponins, dioscin (1) and Xiebai saponin 1 (2) with various bioactivities, were efficiently synthesized using the newly developed glycosyl N-phenyl trifluoroacetimidates (10-13) as glycosylation donors. Thus, dioscin was synthesized in five steps and a 33% overall yield from diosgenin and glycosyl trifluoroacetimidates (10 and 11). Xiebai saponin I was synthesized in eight steps and a 32% overall yield from laxogenin and glycosyl trifluoroacetimidates (10, 12, and 13), whereupon, the rare steroid laxogenin was prepared from diosgenin in four steps and an overall 69% yield. All the glycosylation reactions involved in the present syntheses demonstrated that glycosyl trifluoroacetimidates were successful donors comparable to the corresponding glycosyl trichloroacetimidates.

  DOI：

  10.1021/jo026103c
• 作为产物：
  描述：

  苯甲醛二甲缩醛 在 吡啶 、 对甲苯磺酸 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 生成 [(2R,4aR,6R,7R,8S,8aR)-7-acetyloxy-2-phenyl-6-[(1S,2S,4S,5'R,6R,7S,8R,9S,12S,13R,16S)-5',7,9,13-tetramethylspiro[5-oxapentacyclo[10.8.0.02,9.04,8.013,18]icos-18-ene-6,2'-oxane]-16-yl]oxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl] acetate
  参考文献：
  名称：

  Glycosyl Trifluoroacetimidates. 2. Synthesis of Dioscin and Xiebai Saponin I

  摘要：

  Two trisaccharide steroidal saponins, dioscin (1) and Xiebai saponin 1 (2) with various bioactivities, were efficiently synthesized using the newly developed glycosyl N-phenyl trifluoroacetimidates (10-13) as glycosylation donors. Thus, dioscin was synthesized in five steps and a 33% overall yield from diosgenin and glycosyl trifluoroacetimidates (10 and 11). Xiebai saponin I was synthesized in eight steps and a 32% overall yield from laxogenin and glycosyl trifluoroacetimidates (10, 12, and 13), whereupon, the rare steroid laxogenin was prepared from diosgenin in four steps and an overall 69% yield. All the glycosylation reactions involved in the present syntheses demonstrated that glycosyl trifluoroacetimidates were successful donors comparable to the corresponding glycosyl trichloroacetimidates.

  DOI：

  10.1021/jo026103c