methyl 5-O-trityl-α-D-arabinofuranoside | 4060-35-9

• 分子结构分类: 有机化合物 - 苯类化合物 - 三苯基化合物
• 英文名称: methyl 5-O-trityl-α-D-arabinofuranoside
• 英文别名: methyl 5-O-trityl α-D-Araf；Methyl-<5-O-trityl-α-L-arabinofuranosid>；5-O-Triphenylmethyl-methyl-α-D-arabino-furanosid；Methyl-(5-O-trityl-α-L-arabinofuranosid)；Methyl 5-O-triphenylmethyl-alpha-D-arabinofuranoside；(2S,3S,4S,5R)-2-methoxy-5-(trityloxymethyl)oxolane-3,4-diol
• CAS: 4060-35-9
• 化学式: C₂₅H₂₆O₅
• 分子量: 406.478
• InChiKey: ZFZBMSNSNORRPT-LWSSLDFYSA-N

物化性质

• 沸点：
  563.3±50.0 °C(Predicted)
• 密度：
  1.26±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  30
• 可旋转键数：
  7
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.28
• 拓扑面积：
  68.2
• 氢给体数：
  2
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  methyl 5-O-trityl-α-D-arabinofuranoside 在 吡啶 、 甲醇 、 silica gel supported sodium hydrogen sulfate 、 四丁基氟化铵 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 25.08h， 生成 methyl 2-O-benzoyl-α-D-arabinofuranoside
  参考文献：
  名称：

  由确定的合成霉菌酸制备分枝杆菌阿拉伯半乳聚糖的三阿拉伯糖基二霉酸酯片段。

  摘要：

  描述了一种有效的合成方法，使用结构上定义的合成α-，酮和甲氧基霉菌酸合成三阿拉伯糖基二霉菌酸酯。

  DOI：

  10.1016/j.carres.2016.11.006
• 作为产物：
  描述：

  阿拉伯糖 在 吡啶 、 4-二甲氨基吡啶 、 乙酰氯 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 4.0h， 生成 methyl 5-O-trityl-α-D-arabinofuranoside
  参考文献：
  名称：

  对映体合成的磷脂酶A2抑制剂（-）-cinatrin B.

  摘要：

  描述了从D-阿拉伯糖衍生物9首次合成磷脂酶A2（PLA2）抑制剂（-）-cinatrin B（2）的对映体。螺内酯系统是由烯丙酯8的Ireland-Claisen重排，然后进行水解和立体选择性碘内酯化而形成的。通过烯丙基醇片段中的不对称性来控制重排的立体选择性。酯（S）-8分别以73∶27的比例高产率地得到所需的重排产物7和差向异构体13。通过螯合控制地将衍生自三甲基甲硅烷基乙炔的格利雅试剂加入到α-羟基酮6中，引入C2的最终立体中心。将末端炔烃转化为甲酯21，然后进行乙缩醛水解和选择性的乳糖醇氧化，得到肉桂酸B甲酯。 （22）。

  DOI：

  10.1021/jo016221k

文献信息

• Arabino mycolates from synthetic mycolic acids
  作者：Mohsin O. Mohammed、Mark S. Baird、Juma'a R. Al Dulayymi、Alison Jones、Christopher D. Gwenin

  DOI：10.1016/j.tet.2016.03.083

  日期：2016.6

  The synthesis of single mono-arabino mycolates, important lipid antigens from mycobacteria is described, using structurally defined synthetic mycolic acids. Preliminary assays indicate that these are differentially antigenic to antibodies in the serum of people with active tuberculosis.

  描述了使用结构限定的合成分枝杆菌酸合成单一的单阿拉伯糖基霉菌酸酯（一种来自分枝杆菌的重要脂质抗原）。初步测定表明，这些抗体对活动性结核病患者血清中的抗体具有不同的抗原性。
• A Novel Route for the Synthesis of Deoxy Fluoro Sugars and Nucleosides
  作者：Igor A. Mikhailopulo、Grigorii G. Sivets

  DOI：10.1002/(sici)1522-2675(19991110)82:11<2052::aid-hlca2052>3.0.co;2-7

  日期：1999.11.10

  The reaction of (diethylamino)sulfur trifluoride (DAST) with methyl 5-O-benzoyl-beta-D-xylofuranoside (1) followed by column chromatography afforded the riboside 2 (62%) and the ribo-epoxide 3 (18%) (Scheme 1). Under similar reaction conditions, the alpha-D-anomer 4 gave the riboside 5 and the difluoride 6 in 60 and 9% yield, respectively Treatment of the beta-D-xyloside 10 with DAST gave, after chromatographic purification, the riboside 11 as the principal product (48% 1 Scheme 2). These results suggest that the C(3)-O-SF2NEt2 derivatives were initially formed in the case of the xylosides studied. The distinctive feature of the reaction of DAST with the beta-D-arabinoside 12 consists in the formation of a 3- or 5-benzylideneoxoniumyl-substituted intermediate on one of the consecutive transformations, which finally give rise to the inversion of the configuration at C(3) affording the xylosides 17 (18%) and 18 (55% ): the lyxoside 14 was also isolated from the reaction mixture in a yield of 25% (Scheme 3). In the presence of the non-participating 5-O-trityl group, i.e.,from the reaction products of 21 with DAST. the compounds 23 and 23 were isolated in 16 and 52% yield, respectively (Scheme 4). It may be thus reasonable to conclude that, in the case of the beta-D-arabinosides 12 and 21, the principal route of the reaction is the formation of the intermediate C(2)-O-SF2NEt2 derivative. Unlike the alpha-D-arabinoside 26 was converted to the lyxo-epoxide 25 (53%) and the lyxoside 27 (14%), which implies the intermediate formation of the C(3)-O-SF2NEt2 derivative (Scheme 5).