tert-butyldimethylsilyl 4-O-allyl-3-azido-2,3,6-trideoxy-β-L-ribo-hexopyranoside | 467432-21-9

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: tert-butyldimethylsilyl 4-O-allyl-3-azido-2,3,6-trideoxy-β-L-ribo-hexopyranoside
• CAS: 467432-21-9
• 化学式: C₁₅H₂₉N₃O₃Si
• 分子量: 327.499
• InChiKey: ZXRVVHZEMNUCAH-DGAVXFQQSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.39
• 重原子数：
  22.0
• 可旋转键数：
  6.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.87
• 拓扑面积：
  76.45
• 氢给体数：
  0.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  tert-butyldimethylsilyl 4-O-allyl-3-azido-2,3,6-trideoxy-β-L-ribo-hexopyranoside 在 Grubbs catalyst first generation lithium aluminium tetrahydride 、 三乙胺 作用下， 以 四氢呋喃 、 二氯甲烷 、 苯 为溶剂， 反应 24.5h， 生成 (E)-1,4-bis[tert-butyldimethylsilyl 3'-trifluoroacetamido-2',3',6'-trideoxy-β-L-ribo-hexopyranos-4'-yl]-2-butene-1,4-diol
  参考文献：
  名称：

  First Preparation of Spacer-Linked Cyclic Neooligoaminodeoxysaccharides

  摘要：

  The preparation of novel cyclic 1,4-butanediol-linked oligoaminodeoxysugars 3-5 and 7 is described which are potential binders to polynucleotides. Neooligosaccharides 3-5 are assembled by two consecutive metathesis protocols. In the first phase metathesis-mediated dimerization of an aminodeoxymonosaccharide which was either allylated at the anomeric center or at C4 led to E/Z mixtures of C-2-symmetric homodimers which were transformed into the corresponding 1,4-butanediol linked disaccharides by catalytic hydrogenation of the central olefinic double bond. Double O-allylation of the head-to-head dimer set the stage for macrocyclization by means of ring-closing metathesis. This ring-closing process was highly dependent of the configuration in the carbohydrate moieties. arabino-Configured homodimer 15 directly yielded the macrocycle 32 which contains two sugar units while under the same metathesis conditions the corresponding ribo-configured starting homodimer 19 afforded cyclic neotetra- and neohexasaccharides 34 and 35 after a preceding dimerization and trimerization step, respectively. In addition, homodimer 23 was coupled with silylglycoside 14a under Lewis-acid promoted glycosidation conditions to furnish the doubly glycosylated homodimer 31. Ring-closing metathesis afforded the macrocyclic neoaminodeoxyoligosaccharide 36 with alternating 1,4-butanediol linkage and glycosidic bond. The primary cyclization products were finally transformed into the respective cyclic neoaminodeoxyoligosaccharides 3-5 and 7 by catalytic hydrogenation and standard deprotection conditions.

  DOI：

  10.1002/1521-3765(20020617)8:12<2717::aid-chem2717>3.0.co;2-p
• 作为产物：
  描述：

  Acetic acid (2S,3R)-4-azido-6-(tert-butyl-dimethyl-silanyloxy)-2-methyl-tetrahydro-pyran-3-yl ester 在 sodium methylate 、 silver(l) oxide 作用下， 以 甲醇 、 乙腈 为溶剂， 反应 25.0h， 生成 tert-butyldimethylsilyl 4-O-allyl-3-azido-2,3,6-trideoxy-β-L-ribo-hexopyranoside
  参考文献：
  名称：

  First Preparation of Spacer-Linked Cyclic Neooligoaminodeoxysaccharides

  摘要：

  The preparation of novel cyclic 1,4-butanediol-linked oligoaminodeoxysugars 3-5 and 7 is described which are potential binders to polynucleotides. Neooligosaccharides 3-5 are assembled by two consecutive metathesis protocols. In the first phase metathesis-mediated dimerization of an aminodeoxymonosaccharide which was either allylated at the anomeric center or at C4 led to E/Z mixtures of C-2-symmetric homodimers which were transformed into the corresponding 1,4-butanediol linked disaccharides by catalytic hydrogenation of the central olefinic double bond. Double O-allylation of the head-to-head dimer set the stage for macrocyclization by means of ring-closing metathesis. This ring-closing process was highly dependent of the configuration in the carbohydrate moieties. arabino-Configured homodimer 15 directly yielded the macrocycle 32 which contains two sugar units while under the same metathesis conditions the corresponding ribo-configured starting homodimer 19 afforded cyclic neotetra- and neohexasaccharides 34 and 35 after a preceding dimerization and trimerization step, respectively. In addition, homodimer 23 was coupled with silylglycoside 14a under Lewis-acid promoted glycosidation conditions to furnish the doubly glycosylated homodimer 31. Ring-closing metathesis afforded the macrocyclic neoaminodeoxyoligosaccharide 36 with alternating 1,4-butanediol linkage and glycosidic bond. The primary cyclization products were finally transformed into the respective cyclic neoaminodeoxyoligosaccharides 3-5 and 7 by catalytic hydrogenation and standard deprotection conditions.

  DOI：

  10.1002/1521-3765(20020617)8:12<2717::aid-chem2717>3.0.co;2-p