phenyl 2,7-di-O-benzyl-4-O-benzylidene-3-O-(2-naphthalenylmethyl)-D-glycero-α-D-thio-manno-heptopyranoside | 902751-31-9

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: phenyl 2,7-di-O-benzyl-4-O-benzylidene-3-O-(2-naphthalenylmethyl)-D-glycero-α-D-thio-manno-heptopyranoside
• 英文别名: phenyl 2,7-di-O-benzyl-4,6-O-benzylidene-3-O-(2-naphthalenylmethyl)-D-glycero-1-thio-α-D-mannoheptopyranoside；(2R,4R,4aR,6R,7S,8S,8aS)-8-(naphthalen-2-ylmethoxy)-2-phenyl-7-phenylmethoxy-4-(phenylmethoxymethyl)-6-phenylsulfanyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxine
• CAS: 902751-31-9
• 化学式: C₄₅H₄₂O₆S
• 分子量: 710.891
• InChiKey: WOQJKDNTRNOTQQ-BMEGKUOQSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  8.9
• 重原子数：
  52
• 可旋转键数：
  13
• 环数：
  8.0
• sp3杂化的碳原子比例：
  0.24
• 拓扑面积：
  80.7
• 氢给体数：
  0
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  phenyl 2,7-di-O-benzyl-4-O-benzylidene-3-O-(2-naphthalenylmethyl)-D-glycero-α-D-thio-manno-heptopyranoside 、 methyl 2,7-di-O-benzyl-N-O-(2-cyanophenyl)acetyl-6-deoxy-glycero-β-D-manno-heptopyranosyl-(1->4)-2,3-O-isopropylidene-α-L-rhamnopyranoside 在 1-(苯基亚硫酰基)哌啶 、 三氟甲磺酸酐 、 2,4,6-三叔丁基嘧啶 作用下， 以 二氯甲烷 为溶剂， 反应 5.33h， 以88%的产率得到methyl 2,7-di-O-benzyl-4,6-O-benzylidene-D-glycero-β-D-manno-heptopyranosyl-(1->3)-2,7-di-O-benzyl-4-O-(2-cyanophenyl)acetyl-6-deoxy-glycero-β-D-manno-heptopyranosyl-(1->4)-2,3-O-isopropylidene-α-L-rhamnopyranoside
  参考文献：
  名称：

  Stereocontrolled Synthesis of the d- and l-glycero-β-d-manno-Heptopyranosides and Their 6-Deoxy Analogues. Synthesis of Methyl α-l-Rhamno-pyranosyl-(1→3)-d-glycero-β-d-manno-heptopyranosyl- (1→3)-6-deoxy-glycero-β-d-manno-heptopyranosyl-(1→4)-α-l- rhamno-pyranoside, a Tetrasaccharide Subunit of the Lipopolysaccharide from Plesimonas shigelloides

  摘要：

  The synthesis of D-and L-glycero-alpha-manno-thioheptopyranosides, protected with 4,6-O-alkylidenetype acetals is described. In glycosylations carried out with preactivation with the 1-benzenesulfinylpiperidine/trifluoromethanesulfonic anhydride couple, both the D-and L-glycero series exhibit excellent, beta-selectivity with a range of glycosyl acceptors. In contrast, a 4,7-O-alkylidene acetal was found not to afford, beta-selectivity. With a 4,6-O-[1-cyano-2-(2-iodophenyl) ethylidene] acetal protected thioglycoside, excellent, beta-selectivity was obtained in glycosylation reactions, and subsequent treatment with tributyltin hydride and azoisobutyronitrile brought about clean fragmentation to the 6-deoxy-glycero-beta-D-manno-heptopyranosides. This chemistry was applied to the stereocontrolled synthesis of methyl alpha-L-rhamno-pyranosyl-(1 -> 3)-D-glycero-beta- D-manno-heptopyranosyl-(1 -> 3)-6-deoxy-glycero-beta-D-manno-heptopyranosyl-(1 -> 4)-alpha-L-rhamno-pyranoside, a component of the lipopolysaccharide from Plesimonas shigelloides.

  DOI：

  10.1021/ja061594u
• 作为产物：
  描述：

  2-溴甲基萘 在 四氧化锇 、 草酰氯 、 2-氯-N-(2-氯乙基)-N-甲基乙胺氧化物 、 偶氮二甲酸二异丙酯 、 camphor-10-sulfonic acid 、 二异丁基氢化铝 、 二正丁基氧化锡 、 potassium carbonate 、 二甲基亚砜 、 三苯基膦 、 三氟乙酸 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 水 、 丙酮 、 甲苯 、 叔丁醇 为溶剂， 反应 62.0h， 生成 phenyl 2,7-di-O-benzyl-4-O-benzylidene-3-O-(2-naphthalenylmethyl)-D-glycero-α-D-thio-manno-heptopyranoside
  参考文献：
  名称：

  Stereocontrolled Synthesis of the d- and l-glycero-β-d-manno-Heptopyranosides and Their 6-Deoxy Analogues. Synthesis of Methyl α-l-Rhamno-pyranosyl-(1→3)-d-glycero-β-d-manno-heptopyranosyl- (1→3)-6-deoxy-glycero-β-d-manno-heptopyranosyl-(1→4)-α-l- rhamno-pyranoside, a Tetrasaccharide Subunit of the Lipopolysaccharide from Plesimonas shigelloides

  摘要：

  The synthesis of D-and L-glycero-alpha-manno-thioheptopyranosides, protected with 4,6-O-alkylidenetype acetals is described. In glycosylations carried out with preactivation with the 1-benzenesulfinylpiperidine/trifluoromethanesulfonic anhydride couple, both the D-and L-glycero series exhibit excellent, beta-selectivity with a range of glycosyl acceptors. In contrast, a 4,7-O-alkylidene acetal was found not to afford, beta-selectivity. With a 4,6-O-[1-cyano-2-(2-iodophenyl) ethylidene] acetal protected thioglycoside, excellent, beta-selectivity was obtained in glycosylation reactions, and subsequent treatment with tributyltin hydride and azoisobutyronitrile brought about clean fragmentation to the 6-deoxy-glycero-beta-D-manno-heptopyranosides. This chemistry was applied to the stereocontrolled synthesis of methyl alpha-L-rhamno-pyranosyl-(1 -> 3)-D-glycero-beta- D-manno-heptopyranosyl-(1 -> 3)-6-deoxy-glycero-beta-D-manno-heptopyranosyl-(1 -> 4)-alpha-L-rhamno-pyranoside, a component of the lipopolysaccharide from Plesimonas shigelloides.

  DOI：

  10.1021/ja061594u

文献信息

• Block Synthesis of Tetra- and Hexasaccharides (β-<scp>d</scp>-Glycero-<scp>d</scp>-manno-Hep<i>p</i>-(1→4)-[α-<scp>l</scp>-Rha<i>p</i>-(1→3)-β-<scp>d</scp>-glycero-<scp>d</scp>-manno-Hep<i>p</i>-(1→4)]_<i>n</i>-α-<scp>l</scp>-Rha<i>p</i>-OMe (<i>n</i> = 1 and 2)) Corresponding to Multiple Repeat Units of the Glycan from the Surface-Layer Glycoprotein from Bacillus thermoaerophilus
  作者：David Crich、Ming Li

  DOI：10.1021/jo801414c

  日期：2008.9.19

  A fully stereocontrolled block synthesis of the title tetra- and hexasaccharides has been achieved taking advantage of the ability of the 4,6-O-benzylidene acetal to control the stereochemistry of the beta-D-glycero-D-mannoheptopyranoside unit and of a 2,3-O-diphenylmethylene acetal to install the alpha-L-rhamnopyranosidic linkages. Comparison of the spectral data for the hexasaccharide with that of the natural isolate confirms the structure of this very unusual and structurally challenging glycan.
• Stereocontrolled Synthesis of the <scp>d</scp>- and <scp>l</scp>-<i>glycero</i>-β-<scp>d</scp>-<i>manno</i>-Heptopyranosides and Their 6-Deoxy Analogues. Synthesis of Methyl α-<scp>l</scp>-<i>Rhamno</i>-pyranosyl-(1→3)-<scp>d</scp>-<i>glycero</i>-β-<scp>d</scp>-<i>manno</i>-heptopyranosyl- (1→3)-6-deoxy-<i>glycero</i>-β-<scp>d</scp>-<i>manno</i>-heptopyranosyl-(1→4)-α-<scp>l</scp>- <i>rhamno</i>-pyranoside, a Tetrasaccharide Subunit of the Lipopolysaccharide from <i>Plesimonas shigelloides</i>
  作者：David Crich、Abhisek Banerjee

  DOI：10.1021/ja061594u

  日期：2006.6.1

  The synthesis of D-and L-glycero-alpha-manno-thioheptopyranosides, protected with 4,6-O-alkylidenetype acetals is described. In glycosylations carried out with preactivation with the 1-benzenesulfinylpiperidine/trifluoromethanesulfonic anhydride couple, both the D-and L-glycero series exhibit excellent, beta-selectivity with a range of glycosyl acceptors. In contrast, a 4,7-O-alkylidene acetal was found not to afford, beta-selectivity. With a 4,6-O-[1-cyano-2-(2-iodophenyl) ethylidene] acetal protected thioglycoside, excellent, beta-selectivity was obtained in glycosylation reactions, and subsequent treatment with tributyltin hydride and azoisobutyronitrile brought about clean fragmentation to the 6-deoxy-glycero-beta-D-manno-heptopyranosides. This chemistry was applied to the stereocontrolled synthesis of methyl alpha-L-rhamno-pyranosyl-(1 -> 3)-D-glycero-beta- D-manno-heptopyranosyl-(1 -> 3)-6-deoxy-glycero-beta-D-manno-heptopyranosyl-(1 -> 4)-alpha-L-rhamno-pyranoside, a component of the lipopolysaccharide from Plesimonas shigelloides.