(1R,5S,11R)-7,7,9,9-Tetraisopropyl-6,8,10-trioxa-2-thia-7,9-disila-tricyclo[9.3.0.01,5]tetradec-3-ene | 849205-94-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二噻烷
• 英文名称: (1R,5S,11R)-7,7,9,9-Tetraisopropyl-6,8,10-trioxa-2-thia-7,9-disila-tricyclo[9.3.0.01,5]tetradec-3-ene
• CAS: 849205-94-3
• 化学式: C₂₀H₃₈O₃SSi₂
• 分子量: 414.757
• InChiKey: VAFXOMPSQXFUHG-HSALFYBXSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.49
• 重原子数：
  26.0
• 可旋转键数：
  4.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.9
• 拓扑面积：
  27.69
• 氢给体数：
  0.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  (1R,5S,11R)-7,7,9,9-Tetraisopropyl-6,8,10-trioxa-2-thia-7,9-disila-tricyclo[9.3.0.01,5]tetradec-3-ene 在 三乙基硼 、 四丁基氟化铵 、 氨 、 氧气 、 三正丁基氢锡 作用下， 以 四氢呋喃 、 甲醇 、 甲苯 、 乙腈 为溶剂， 反应 26.0h， 生成 4-Amino-1-((2R,4S,5R,6R)-4,6-dihydroxy-1-thia-spiro[4.4]non-2-yl)-1H-pyrimidin-2-one
  参考文献：
  名称：

  Stereoselective Synthesis of Conformationally Constrained 2‘-Deoxy-4‘-thia β-Anomeric Spirocyclic Nucleosides Featuring Either Hydroxyl Configuration at C5‘

  摘要：

  An enantioselective approach to 2'-deoxy-4'-thia spirocyclic nucleosides featuring an alpha- or beta-hydroxyl substituent at C-5' of the carbocyclic ring is detailed. The starting point is the mandelate acetal 8. The overall strategy involves the stereocontrolled dihydroxylation of this dihydrothiophene, subsequent generation of the keto acetonide 12 followed by its Meerwein-Ponndorf-Verley reduction and beta-elimination, protection of the resulting dihydroxy thiaglycal, electrophilic glycosidation according to the Haraguchi protocol, reductive removal of the phenylseleno group, and end-game global deprotection. Acquisition of the alpha- and beta-5'-isomers is equally facile. Various ID and 2D NMR techniques are used for assigning configuration.

  DOI：

  10.1021/jo048071u
• 作为产物：
  描述：

  (2'S,3aS,4S,5''R,6aR)-2,2-dimethyl-5''-phenyldihydro-6H-dispiro[thieno[3,4-d][1,3]dioxole-4,1'-cyclopentane-2',2''-[1,3]dioxolan]-4''-one 在 2,4,6-三甲基吡啶 、 六甲基磷酰三胺 、 lithium hydroxide 、 叔丁基锂 、 silver trifluoromethanesulfonate 、 aluminum isopropoxide 作用下， 以 四氢呋喃 、 水 、 N,N-二甲基甲酰胺 、 异丙醇 、 正戊烷 为溶剂， 反应 31.0h， 生成 (1R,5S,11R)-7,7,9,9-Tetraisopropyl-6,8,10-trioxa-2-thia-7,9-disila-tricyclo[9.3.0.01,5]tetradec-3-ene
  参考文献：
  名称：

  Stereoselective Synthesis of Conformationally Constrained 2‘-Deoxy-4‘-thia β-Anomeric Spirocyclic Nucleosides Featuring Either Hydroxyl Configuration at C5‘

  摘要：

  An enantioselective approach to 2'-deoxy-4'-thia spirocyclic nucleosides featuring an alpha- or beta-hydroxyl substituent at C-5' of the carbocyclic ring is detailed. The starting point is the mandelate acetal 8. The overall strategy involves the stereocontrolled dihydroxylation of this dihydrothiophene, subsequent generation of the keto acetonide 12 followed by its Meerwein-Ponndorf-Verley reduction and beta-elimination, protection of the resulting dihydroxy thiaglycal, electrophilic glycosidation according to the Haraguchi protocol, reductive removal of the phenylseleno group, and end-game global deprotection. Acquisition of the alpha- and beta-5'-isomers is equally facile. Various ID and 2D NMR techniques are used for assigning configuration.

  DOI：

  10.1021/jo048071u