(E)-3-{(4S,5S)-5-[(R)-2-(tert-Butyl-dimethyl-silanyloxy)-1-(imidazole-1-carbothioyloxy)-ethyl]-2,2-dimethyl-[1,3]dioxolan-4-yl}-acrylic acid tert-butyl ester | 501373-52-0

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: (E)-3-{(4S,5S)-5-[(R)-2-(tert-Butyl-dimethyl-silanyloxy)-1-(imidazole-1-carbothioyloxy)-ethyl]-2,2-dimethyl-[1,3]dioxolan-4-yl}-acrylic acid tert-butyl ester
• CAS: 501373-52-0
• 化学式: C₂₄H₄₀N₂O₆SSi
• 分子量: 512.743
• InChiKey: IKGVZLZICVHTGA-SCSYJIGVSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.84
• 重原子数：
  34.0
• 可旋转键数：
  7.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  81.04
• 氢给体数：
  0.0
• 氢受体数：
  9.0

反应信息

• 作为反应物：
  描述：

  (E)-3-{(4S,5S)-5-[(R)-2-(tert-Butyl-dimethyl-silanyloxy)-1-(imidazole-1-carbothioyloxy)-ethyl]-2,2-dimethyl-[1,3]dioxolan-4-yl}-acrylic acid tert-butyl ester 在 偶氮二异丁腈 、 三苯基氢化锡 作用下， 以 苯 为溶剂， 生成 [4-(tert-butyl-dimethylsilanyloxymethyl)-6-imidazol-1-yl-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5,c]pyran-7-yl]-acetic acid tert-butyl ester 、 [4-(tert-butyl-dimethylsilanyloxymethyl)-6-imidazol-1-yl-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5,c]pyran-7-yl]-acetic acid tert-butyl ester 、 [(3aS,4R,6R,7R,7aS)-4-(tert-Butyl-dimethyl-silanyloxymethyl)-6-imidazol-1-yl-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran-7-yl]-acetic acid tert-butyl ester 、 [(3aS,4R,6S,7R,7aS)-4-(tert-Butyl-dimethyl-silanyloxymethyl)-6-imidazol-1-yl-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran-7-yl]-acetic acid tert-butyl ester
  参考文献：
  名称：

  Stereochemical control in radical cyclization routes to N-glycosides: role of protecting groups and of the configuration (E versus Z) of the acceptors

  摘要：

  The first radical intermediate in the thiourethane-mediated deoxygenation of an alcohol (Barton-McCombie reaction) can participate in an exo-hex-5-enyl or exo-hept-6-enyl type radical cyclization when a suitable radical acceptor (e.g. alpha,beta-unsaturated ester. oxime ether or hydrazone) is appropriately placed. Carbohydrate-derived imidazolyl and triazolyl thioates with such acceptors. upon addition to excess of a good hydride donor (reverse addition), undergo moderately efficient cyclization reactions to give N-heterocyclic furanosides, and, surprisingly even N-pyranosides. Depending on the acceptor, glycosides with either C-2-carbon or C-2-amino substituents are formed. In the exo-hept-6-enyl cyclizations the (Z)-olefin acceptors give excellent stereoselectivity in the generation of the C-2 stereogenic center: only altro-isomers are formed. In all cases both alpha- and beta-glycosides are obtained with a moderate preference for the latter. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2003.07.013
• 作为产物：
  描述：

  5-(tert-butyldimethylsilyloxy)-2,3-isopropylidenedioxy-D-ribofuranose 在 4-二甲氨基吡啶 作用下， 以 乙二醇二甲醚 、 1,2-二氯乙烷 为溶剂， 反应 4.0h， 生成 (E)-3-{(4S,5S)-5-[(R)-2-(tert-Butyl-dimethyl-silanyloxy)-1-(imidazole-1-carbothioyloxy)-ethyl]-2,2-dimethyl-[1,3]dioxolan-4-yl}-acrylic acid tert-butyl ester
  参考文献：
  名称：

  Stereochemical control in radical cyclization routes to N-glycosides: role of protecting groups and of the configuration (E versus Z) of the acceptors

  摘要：

  The first radical intermediate in the thiourethane-mediated deoxygenation of an alcohol (Barton-McCombie reaction) can participate in an exo-hex-5-enyl or exo-hept-6-enyl type radical cyclization when a suitable radical acceptor (e.g. alpha,beta-unsaturated ester. oxime ether or hydrazone) is appropriately placed. Carbohydrate-derived imidazolyl and triazolyl thioates with such acceptors. upon addition to excess of a good hydride donor (reverse addition), undergo moderately efficient cyclization reactions to give N-heterocyclic furanosides, and, surprisingly even N-pyranosides. Depending on the acceptor, glycosides with either C-2-carbon or C-2-amino substituents are formed. In the exo-hept-6-enyl cyclizations the (Z)-olefin acceptors give excellent stereoselectivity in the generation of the C-2 stereogenic center: only altro-isomers are formed. In all cases both alpha- and beta-glycosides are obtained with a moderate preference for the latter. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2003.07.013