(2R,3R,4S,5R,6R)-3,4,5-tris(benzyloxy)-2-((benzyloxy)methyl)-6-(((1R,2S,5R)-2-isopropyl-5-methylcyclohexyl)oxy)tetrahydro-2H-pyran | 132097-74-6

• 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,3R,4S,5R,6R)-3,4,5-tris(benzyloxy)-2-((benzyloxy)methyl)-6-(((1R,2S,5R)-2-isopropyl-5-methylcyclohexyl)oxy)tetrahydro-2H-pyran
• 英文别名: (1R,2S,5R)-2-isopropyl-5-methylcyclohexyl 2,3,4,6-tetra-O-benzyl-β-D-glucopyranoside；(1R,2S,5R)-menthyl 2,3,4,6-tetra-O-benzyl-β-D-glucopyranoside；(-)-menthyl 2,3,4,6-tetra-O-benzyl-β-D-glucopyranoside；l-menthyl 2,3,4,6-tetra-O-benzyl-β-D-glucopyranoside；menthyl 2,3,4,6-tetra-O-benzyl-β-D-glucopyranoside；menthyl 2,3,4,6-tetra-O-benzyl-D-glucopyranoside；(2R,3R,4S,5R,6R)-2-[(1R,2S,5R)-5-methyl-2-propan-2-ylcyclohexyl]oxy-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxane
• CAS: 132097-74-6；132155-06-7
• 化学式: C₄₄H₅₄O₆
• 分子量: 678.909
• InChiKey: DXRHYGQPOBZBGC-LYFDEDEBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  9
• 重原子数：
  50
• 可旋转键数：
  16
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.45
• 拓扑面积：
  55.4
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为产物：
  描述：

  pent-4'-enyl 2,3,4,6-tetra-O-acetyl-1-thio-β-D-glucopyranoside 在 4 A molecular sieve 、 sodium methylate 、 sodium hydride 、 oxy>iodo>benzene 作用下， 以 甲醇 、 N,N-二甲基甲酰胺 为溶剂， 反应 6.5h， 生成 (2R,3R,4S,5R,6R)-3,4,5-tris(benzyloxy)-2-((benzyloxy)methyl)-6-(((1R,2S,5R)-2-isopropyl-5-methylcyclohexyl)oxy)tetrahydro-2H-pyran
  参考文献：
  名称：

  Synthesis of TN and T Antigen Glycopeptide Sequences of tumor-associated MUC-1 usingS-pent-4-enyl thioglycosides

  摘要：

  The syntheses of glycopeptides 34 and 38 with tumor associated T-N and T antigen structure containing a partial sequence of the tandem repeat unit of the polymorphic epithelial mucin MUC-1 were achieved via fragment condensations. Electrophilic activation of S-pent-4-enyl thioglycosides was applied for the construction of O-glycosyl amino acid and saccharide building blocks.

  DOI：

  10.1002/prac.19973390160

文献信息

• Electron-deficient pyridinium salts/thiourea cooperative catalyzed <i>O</i>-glycosylation via activation of <i>O</i>-glycosyl trichloroacetimidate donors
  作者：Mukta Shaw、Yogesh Kumar、Rima Thakur、Amit Kumar

  DOI：10.3762/bjoc.13.236

  日期：——

  The glycosylation of O-glycosyl trichloroacetimidate donors using a synergistic catalytic system of electron-deficient pyridinium salts/aryl thiourea derivatives at room temperature is demonstrated. The acidity of the adduct formed by the 1,2-addition of alcohol to the electron-deficient pyridinium salt is increased in the presence of an aryl thiourea derivative as an hydrogen-bonding cocatalyst. This

  证明了在室温下使用缺电子的吡啶鎓盐/芳基硫脲衍生物的协同催化系统对O-糖基三氯乙酰基亚氨酸酯供体的糖基化作用。在芳基硫脲衍生物作为氢键合助催化剂的存在下，由醇向缺电子的吡啶鎓盐的1,2-加成形成的加合物的酸度增加。这种转化在温和的反应条件下进行，反应条件与各种O-糖基三氯乙酰亚氨酸酯供体和糖基受体结合，以中等到良好的产率提供了可预测的选择性的相应O-糖苷。另外，通过使用部分保护的受体，优化的方法也用于区域选择性的O-糖基化。
• AuCl₃- and AuCl₃-Phenylacetylene-Catalyzed Glycosylations by Using Glycosyl Trichloroacetimidates
  作者：Rashmi Roy、Ashok Kumar Palanivel、Asadulla Mallick、Yashwant D. Vankar

  DOI：10.1002/ejoc.201500137

  日期：2015.6

  obtained for the glycosylation of 2-O-acetyl-protected disarmed glycosyl donors, whereas armed glycosyl trichloroacetimidates gave rise to a mixture of anomeric glycosides. Acid-sensitive nucleophiles such as Fmoc-serine tert-butyl ester or Fmoc-threonine tert-butyl ester successfully underwent the glycosylations, albeit in moderate yields, under mild conditions at room temperature.

  通过使用 AuCl3-苯乙炔中继催化剂体系进行武装和解除武装的三氯乙酰亚胺基糖基供体的糖基化。该催化体系的有效性也与单独使用 AuCl3 作为催化剂的有效性进行了比较。使用这些催化剂的糖基化在室温下在 5-45 分钟内有效进行。2-O-乙酰保护的去武装糖基供体的糖基化获得了优异的非对映选择性，而武装糖基三氯乙酰亚胺产生了异头糖苷的混合物。酸敏感性亲核试剂，如 Fmoc-丝氨酸叔丁酯或 Fmoc-苏氨酸叔丁酯，在室温温和条件下成功地进行了糖基化，尽管产率适中。
• A Visible-Light-Promoted <i>O</i> -Glycosylation with a Thioglycoside Donor
  作者：Mark L. Spell、Kristina Deveaux、Caitlin G. Bresnahan、Bradley L. Bernard、William Sheffield、Revati Kumar、Justin R. Ragains

  DOI：10.1002/anie.201601566

  日期：2016.5.23

  Visible‐light irradiation of 4‐p‐methoxyphenyl‐3‐butenylthioglucoside donors in the presence of Umemoto's reagent and alcohol acceptors serves as a mild approach to O‐glycosylation. Visible‐light photocatalysts are not required for activation, and alkyl‐ and arylthioglycosides not bearing the p‐methoxystyrene are inert to these conditions. Experimental and computational evidence for an intervening

  在梅本试剂和醇受体存在下，对4-对-甲氧基苯基-3-丁烯基硫代葡萄糖苷供体的可见光照射是温和的O-糖基化方法。活化不需要可见光光催化剂，不带有对甲氧基苯乙烯的烷基和芳基硫代糖苷对这些条件呈惰性。提供了反应性必需的中间电子供体-受体复合物的实验和计算证据。伯，仲和叔醇受体的产量范围从中等到高。完全的β-选择性可以通过邻群的参与来实现。
• Visible-light-promoted 3,5-dimethoxyphenyl glycoside activation and glycosylation
  作者：Yafei Cao、Minmin Zhou、Run-Ze Mao、You Zou、Feng Xia、Da-Ke Liu、Jianhui Liu、Qin Li、De-Cai Xiong、Xin-Shan Ye

  DOI：10.1039/d1cc04473g

  日期：——

  A new glycosylation method promoted by visible light with 3,5-dimethoxyphenyl glycoside as the donor was developed.

  一种以3,5-二甲氧基苯基糖苷为供体的可见光促进糖基化方法被开发出来。

• Gold(III) Chloride and Phenylacetylene: A Catalyst System for the Ferrier Rearrangement, and<i>O</i>-Glycosylation of 1-<i>O</i>-Acetyl Sugars as Glycosyl Donors
  作者：Rashmi Roy、Parasuraman Rajasekaran、Asadulla Mallick、Yashwant D. Vankar

  DOI：10.1002/ejoc.201402606

  日期：2014.9

  have developed a new catalyst system comprising AuCl3 and phenylacetylene that promotes the Ferrier rearrangement of glycals and 2-acetoxymethylglycals with different nucleophiles, and also the O-glycosylation of 1-O-acetyl sugars to obtain a variety of useful glycosides at room temperature through relay catalysis. Good anomeric selectivity was observed for the Ferrier rearrangements, whereas the O-glycosylation

  我们开发了一种新的催化剂体系，包含 AuCl3 和苯乙炔，可促进具有不同亲核试剂的糖类和 2-乙酰氧基甲基糖类的费里尔重排，以及 1-O-乙酰糖的 O-糖基化，以通过以下方式在室温下获得各种有用的糖苷中继催化。对于 Ferrier 重排观察到良好的异头异构体选择性，而 1-O-乙酰糖的 O-糖基化产生具有中等至极好选择性的非对映异构体混合物。