benzyl (2S,3S,4S,5R,6R)-6-[[(3S,4aR,6aR,6bS,8aS,12aS,14aR,14bR)-4,4,6a,6b,11,11,14b-heptamethyl-8a-[(2S,3R,4S,5R,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxycarbonyl-1,2,3,4a,5,6,7,8,9,10,12,12a,14,14a-tetradecahydropicen-3-yl]oxy]-3,5-dibenzoyloxy-4-[(1S,2R)-2-benzoyloxy-3-oxo-1-(2-oxo-2-phenylmethoxyethoxy)-3-phenylmethoxypropoxy]oxane-2-carboxylate | 1039374-48-5

• 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: benzyl (2S,3S,4S,5R,6R)-6-[[(3S,4aR,6aR,6bS,8aS,12aS,14aR,14bR)-4,4,6a,6b,11,11,14b-heptamethyl-8a-[(2S,3R,4S,5R,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxycarbonyl-1,2,3,4a,5,6,7,8,9,10,12,12a,14,14a-tetradecahydropicen-3-yl]oxy]-3,5-dibenzoyloxy-4-[(1S,2R)-2-benzoyloxy-3-oxo-1-(2-oxo-2-phenylmethoxyethoxy)-3-phenylmethoxypropoxy]oxane-2-carboxylate
• CAS: 1039374-48-5
• 化学式: C₉₇H₁₁₀O₂₇
• 分子量: 1707.92
• InChiKey: OBINNWMKOBPHLX-RHFYTSDGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  16.8
• 重原子数：
  124
• 可旋转键数：
  40
• 环数：
  13.0
• sp3杂化的碳原子比例：
  0.49
• 拓扑面积：
  335
• 氢给体数：
  0
• 氢受体数：
  27

反应信息

• 作为反应物：
  描述：

  benzyl (2S,3S,4S,5R,6R)-6-[[(3S,4aR,6aR,6bS,8aS,12aS,14aR,14bR)-4,4,6a,6b,11,11,14b-heptamethyl-8a-[(2S,3R,4S,5R,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxycarbonyl-1,2,3,4a,5,6,7,8,9,10,12,12a,14,14a-tetradecahydropicen-3-yl]oxy]-3,5-dibenzoyloxy-4-[(1S,2R)-2-benzoyloxy-3-oxo-1-(2-oxo-2-phenylmethoxyethoxy)-3-phenylmethoxypropoxy]oxane-2-carboxylate 在 palladium on activated charcoal 氢气 作用下， 以 乙酸乙酯 、 异丙醇 为溶剂， 20.0 ℃ 、101.33 kPa 条件下， 反应 5.0h， 生成
  参考文献：
  名称：

  Synthesis of Betavulgaroside III, a Representative Triterpene seco-Glycoside

  摘要：

  Triterpene seco-glycosides constitute a small family of the plant saponins which feature a terminal seco-saccharide appendage deriving supposedly from oxidative scission of a monosaccharide unit. Herein, we have developed synthetic approaches for the first time to the access to these molecules. Betavulgaroside III (1), a representative congener occurring in Beta vulgaris and Achyranthes fauriei, is successfully synthesized in a total of 31 steps with L-arabinose, D-glucose, and oleanolic acid as starting materials. The longest linear sequence requires 23 steps and in an overall 0.9% yield (from D-glucose). The synthesis features oxidative elaboration of the seco-saccharide unit prior to assembly of the triterpene 3,28-bisglycoside. This tactic has been proven superior, in the attempts to the synthesis of the more easily accessible 2 ''-epi-betavulgaroside III (2), to that employing oxidative cleavage of the terminal saccharide unit at an advanced triterpene 3,28-bisglycoside scaffold.

  DOI：

  10.1021/jo800669h
• 作为产物：
  描述：

  benzyl (2S,3S,4S,5R)-3,5-dibenzoyloxy-4-[(1S,2R)-2-benzoyloxy-3-oxo-1-(2-oxo-2-phenylmethoxyethoxy)-3-phenylmethoxypropoxy]-6-(2,2,2-trichloroethanimidoyl)oxyoxane-2-carboxylate 、 olean-12-en-28-oic acid 3-hydroxy-2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl ester 在 叔丁基二甲硅基三氟甲磺酸酯 作用下， 以 二氯甲烷 为溶剂， 反应 1.0h， 以75%的产率得到benzyl (2S,3S,4S,5R,6R)-6-[[(3S,4aR,6aR,6bS,8aS,12aS,14aR,14bR)-4,4,6a,6b,11,11,14b-heptamethyl-8a-[(2S,3R,4S,5R,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxycarbonyl-1,2,3,4a,5,6,7,8,9,10,12,12a,14,14a-tetradecahydropicen-3-yl]oxy]-3,5-dibenzoyloxy-4-[(1S,2R)-2-benzoyloxy-3-oxo-1-(2-oxo-2-phenylmethoxyethoxy)-3-phenylmethoxypropoxy]oxane-2-carboxylate
  参考文献：
  名称：

  Synthesis of Betavulgaroside III, a Representative Triterpene seco-Glycoside

  摘要：

  Triterpene seco-glycosides constitute a small family of the plant saponins which feature a terminal seco-saccharide appendage deriving supposedly from oxidative scission of a monosaccharide unit. Herein, we have developed synthetic approaches for the first time to the access to these molecules. Betavulgaroside III (1), a representative congener occurring in Beta vulgaris and Achyranthes fauriei, is successfully synthesized in a total of 31 steps with L-arabinose, D-glucose, and oleanolic acid as starting materials. The longest linear sequence requires 23 steps and in an overall 0.9% yield (from D-glucose). The synthesis features oxidative elaboration of the seco-saccharide unit prior to assembly of the triterpene 3,28-bisglycoside. This tactic has been proven superior, in the attempts to the synthesis of the more easily accessible 2 ''-epi-betavulgaroside III (2), to that employing oxidative cleavage of the terminal saccharide unit at an advanced triterpene 3,28-bisglycoside scaffold.

  DOI：

  10.1021/jo800669h