| 912805-54-0

• 分子结构分类: 有机化合物 - 有机氧化合物
• CAS: 912805-54-0
• 化学式: C₆₄H₈₅NO₂₀Si
• 分子量: 1216.46
• InChiKey: HFPAKQXNVNLWAE-CEMAUZLASA-N

物化性质

• 密度：
  1.27±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  9.59
• 重原子数：
  86.0
• 可旋转键数：
  23.0
• 环数：
  10.0
• sp3杂化的碳原子比例：
  0.61
• 拓扑面积：
  217.12
• 氢给体数：
  0.0
• 氢受体数：
  20.0

反应信息

• 作为反应物：
  描述：

  在 水 、 potassium carbonate 作用下， 以 甲醇 为溶剂， 反应 2.0h， 以91%的产率得到2-nitrobenzyl 5-O-tert-butyldimethylsilyl-2,3-O-isopropylidene-β-D-apiofuranosyl-(1->3)-2,4-di-O-benzyl-β-D-xylopyranosyl-(1->4)-2,3-O-isopropylidene-α-L-rhamnopyranosyl-(1->2)-2-O-benzyl-β-D-fucopyranoside
  参考文献：
  名称：

  Synthetic Studies of Complex Immunostimulants from Quillaja saponaria:  Synthesis of the Potent Clinical Immunoadjuvant QS-21A_api

  摘要：

  QS-21 is one of the most promising new adjuvants for immune response potentiation and dose-sparing in vaccine therapy given its exceedingly high level of potency and its favorable toxicity profile. Melanoma, breast cancer, small cell lung cancer, prostate cancer, HIV-1, and malaria are among the numerous maladies targeted in more than 80 recent and ongoing vaccine therapy clinical trials involving QS-21 as a critical adjuvant component for immune response augmentation. QS-21 is a natural product immunostimulatory adjuvant, eliciting both T-cell- and antibody-mediated immune responses with microgram doses. Herein is reported the synthesis of QS-21A(api) in a highly modular strategy, applying novel glycosylation methodologies to a convergent construction of the potent saponin immunostimulant. The chemical synthesis of QS-21 offers unique opportunities to probe its mode of biological action through the preparation of otherwise unattainable nonnatural saponin analogues.

  DOI：

  10.1021/ja062364i
• 作为产物：
  描述：

  Acetic acid (2R,3S,4S,5R,6R)-4-benzyloxy-5-(tert-butyl-dimethyl-silanyloxy)-2-methyl-6-(2-nitro-benzyloxy)-tetrahydro-pyran-3-yl ester 在 对甲苯磺酸 作用下， 以 甲醇 、 二氯甲烷 、 甲苯 为溶剂， 反应 38.25h， 生成
  参考文献：
  名称：

  Synthetic Studies of Complex Immunostimulants from Quillaja saponaria:  Synthesis of the Potent Clinical Immunoadjuvant QS-21A_api

  摘要：

  QS-21 is one of the most promising new adjuvants for immune response potentiation and dose-sparing in vaccine therapy given its exceedingly high level of potency and its favorable toxicity profile. Melanoma, breast cancer, small cell lung cancer, prostate cancer, HIV-1, and malaria are among the numerous maladies targeted in more than 80 recent and ongoing vaccine therapy clinical trials involving QS-21 as a critical adjuvant component for immune response augmentation. QS-21 is a natural product immunostimulatory adjuvant, eliciting both T-cell- and antibody-mediated immune responses with microgram doses. Herein is reported the synthesis of QS-21A(api) in a highly modular strategy, applying novel glycosylation methodologies to a convergent construction of the potent saponin immunostimulant. The chemical synthesis of QS-21 offers unique opportunities to probe its mode of biological action through the preparation of otherwise unattainable nonnatural saponin analogues.

  DOI：

  10.1021/ja062364i