methyl 2-azido-4,6-O-benzylidene-2-deoxy-3-O-(trifluoromethanesulfonyl)-α-D-altropyranoside | 207506-27-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡喃二恶英
• 英文名称: methyl 2-azido-4,6-O-benzylidene-2-deoxy-3-O-(trifluoromethanesulfonyl)-α-D-altropyranoside
• 英文别名: Methyl 2-azido-4,6-O-benzyliden-2-desoxy-3-O-trifluormethansulfonyl-α-D-altropyranosid；[(2R,4aR,6S,7S,8S,8aR)-7-azido-6-methoxy-2-phenyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-yl] trifluoromethanesulfonate
• CAS: 207506-27-2
• 化学式: C₁₅H₁₆F₃N₃O₇S
• 分子量: 439.369
• InChiKey: AOLVQQMJAIZEFL-WZBKEBKWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  29
• 可旋转键数：
  5
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.6
• 拓扑面积：
  103
• 氢给体数：
  0
• 氢受体数：
  12

反应信息

• 作为反应物：
  描述：

  methyl 2-azido-4,6-O-benzylidene-2-deoxy-3-O-(trifluoromethanesulfonyl)-α-D-altropyranoside 在 sodium azide 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 生成 methyl 2,3-diazido-4,6-O-benzylidene-2,3-dideoxy-α-D-mannopyranoside
  参考文献：
  名称：

  Aldotetroses and C(3)-Modified Aldohexoses as Substrates for N-Acetylneuraminic Acid Aldolase: A Model for the Explanation of the Normal and the Inversed Stereoselectivity

  摘要：

  The four stereoisomeric aldotetroses were accepted with different reactivities by N-acetylneuraminic acid aldolase. C(3)-modified D-mannose and D-glucose derivatives, respectively, failed to undergo enzymatic aldol addition. Based on the observed reactivities of the tested compounds (about 58), a mechanistic scheme is proposed which relates substrate structure, reactivity and stereochemical outcome observed in Neu5Ac aldolase-catalyzed reactions. The condensation products obtained in the L-erythrose and D-threose reactions are side-chain modified sialic acid and D-KDO derivatives, respectively, of biological interest.

  DOI：

  10.1021/jo00117a016
• 作为产物：
  描述：

  methyl 4,6-O-benzylidene-2,3-di-O-methanesulfonyl-α-D-glucopyranoside 在 吡啶 、 sodium azide 、 氯化铵 、 potassium hydroxide 作用下， 以 四氢呋喃 、 甲醇 、 二甲基亚砜 、 1,2-二氯乙烷 为溶剂， 反应 0.5h， 生成 methyl 2-azido-4,6-O-benzylidene-2-deoxy-3-O-(trifluoromethanesulfonyl)-α-D-altropyranoside
  参考文献：
  名称：

  Stereoselective Synthesis of 2,3-Diamino-2,3-dideoxy-β-d-mannopyranosyl Uronates

  摘要：

  With the aim to find an efficient synthetic procedure for the construction of 2,3-diamino-2,3-dideoxy-beta-D-mannuronic acids, we evaluated three mannosyl donors: (S)-phenyl 4,6-di-O-acetyl-2,3-diazido mannopyranoside, (S)-phenyl 2,3-diazido-4,6-O-benzylidene mannopyranoside, and (S)-phenyl 2,3-diazido mannopyranosyl methyl uronate. The first two mannosylating agents are rather unselective or slightly a-selective in their condensation with three different acceptors. The mannuronic acid donor on the other hand reliably provides the desired beta-mannosidic linkage. A mechanistic rationale is put forward to account for the different behavior of the three donor types. Suitably protected 2,3-diazido mannuronic acids were employed to construct the all-cis-linked tetrasaccharide repeating unit of the capsular polysaccharide of Bacillus stearothermophilus, featuring two 2,3-diacetamido-2,3-dideoxy-beta-D-mannuronic acids.

  DOI：

  10.1021/jo201179p

文献信息

• Synthesis of 4-Nitrophenyl 2-Acetamido-2-deoxy-β-D-mannopyranoside and 4-Nitrophenyl 2-Acetamido-2-deoxy-α-D-mannopyranoside
  作者：Pavel Krist、Marek Kuzma、István F. Pelyvás、Pavla Simerská、Vladimír Křen

  DOI：10.1135/cccc20030801

  日期：——

  The title compounds were synthesized by the selective reduction of the azido group in 4-nitrophenyl 3,4,6-tri-O-acetyl-2-azido-2-deoxy-α-D-mannopyranoside (8) and 4-nitrophenyl 3,4,6-tri-O-acetyl-2-azido-2-deoxy-β-D-mannopyranoside (11), and by subsequent acetylation. Compound8was prepared by opening of the epoxide ring in methyl 2,3-anhydro-4,6-O-benzylidene-α-D-glucopyranoside (1) with sodium azide, followed by inversion of the configuration at C-3 in the resulting altropyranoside and glycosidation with 4-nitrophenol.

  这些标题化合物是通过选择性还原4-硝基苯基3,4,6-三O-乙酰基-2-叠氮-2-脱氧-α-D-甘露聚糖 (8) 和 4-硝基苯基3,4,6-三O-乙酰基-2-叠氮-2-脱氧-β-D-甘露聚糖 (11) 中的叠氮基，并随后进行乙酰化合成的。 化合物8是通过用硝基苯酚对甲基2,3-环氧-4,6-O-苄基亚甲基-α-D-葡萄糖聚糖 (1) 进行环氧环开启，然后在产生的阿尔托吡喃糖中C-3处的构型倒置，最后与4-硝基苯酚进行糖苷化而制备的。
• Chemoenzymatic synthesis of ring ¹⁸O-labeled sialic acid
  作者：Deepani Indurugalla、Andrew J Bennet

  DOI：10.1139/v08-140

  日期：2008.11.1

  Methyl 4,6-O-benzylidene-α-D-glucopyranoside was converted into methyl 2-azido-2-deoxy-4,6-O-benzylidene-α-D-altropyranoside via a synthetic route that incorporated two inversions of configuration. Activation of the C-3 hydroxyl group as a triflate ester followed by an S_N2 reaction with O-18 labeled benzoate gave, after standard functional group manipulations, 2-acetamido-2-deoxy-D-(3-¹⁸O)mannose. Coupling of the labeled N-acetyl-mannosamine with pyruvate was catalyzed by sialic acid aldolase to give ring-oxygen-labeled sialic acid in an overall yield of 11.4% over 10 steps.Key words: N-acetylneuraminic acid, sialic acid oxygen-18, chemoenzymatic.

  甲基 4,6-O-亚苄基-α-D-吡喃葡萄糖苷通过一条包含两种构型反转的合成路线转化为甲基 2-叠氮-2-脱氧-4,6-O-亚苄基-α-D-阿托吡喃糖苷。将 C-3 羟基活化为三酸酯，然后与 O-18 标记的苯甲酸酯发生 SN2 反应，经过标准的官能团处理后，得到 2-乙酰氨基-2-脱氧-D-(3-18O)甘露糖。在丙酮酸醛缩酶的催化下，标记的 N-乙酰甘露胺与丙酮酸发生偶联反应，得到环氧标记的丙酮酸，经过 10 个步骤，总产率为 11.4%：N-acetylneuraminic acid, sialic acid oxygen-18, chemoenzymatic.
• Aldotetroses and C(3)-Modified Aldohexoses as Substrates for N-Acetylneuraminic Acid Aldolase: A Model for the Explanation of the Normal and the Inversed Stereoselectivity
  作者：Wolfgang Fitz、Jan-Robert Schwark、Chi-Huey Wong

  DOI：10.1021/jo00117a016

  日期：1995.6

  The four stereoisomeric aldotetroses were accepted with different reactivities by N-acetylneuraminic acid aldolase. C(3)-modified D-mannose and D-glucose derivatives, respectively, failed to undergo enzymatic aldol addition. Based on the observed reactivities of the tested compounds (about 58), a mechanistic scheme is proposed which relates substrate structure, reactivity and stereochemical outcome observed in Neu5Ac aldolase-catalyzed reactions. The condensation products obtained in the L-erythrose and D-threose reactions are side-chain modified sialic acid and D-KDO derivatives, respectively, of biological interest.
• Synthese von 6-thiosialinsäuren
  作者：Hans Mack、Reinhard Brossmer

  DOI：10.1016/s0040-4020(98)00167-7

  日期：1998.4

  The synthesis of 2-acetamido-2-deoxy-3-thio-D-mannose (11) is described. Chain elongation of thiazoline 10 with potassium-di-O-tbutyl-oxaloacetate yields epimeric 6-thiosialic acids 14 and 15. Chain extension of 18 with oxaloacetate/Ni++ results in the formation of N-acetyl-6-thioneuraminic acid (21). Starting from 21 synthesis of alpha-azide 25 and dehydro-compound 27 was accomplished by treatment of 23 with sodium azide. On the other hand lewis acid catalyzed azidation of 22 beta with azidotrimethylsilane afforded beta-azide 29. (C) 1998 Elsevier Science Ltd. All rights reserved.
• Stereoselective Synthesis of 2,3-Diamino-2,3-dideoxy-β-<scp>d</scp>-mannopyranosyl Uronates
  作者：Marthe T. C. Walvoort、Gert-Jan Moggré、Gerrit Lodder、Herman S. Overkleeft、Jeroen D. C. Codée、Gijsbert A. van der Marel

  DOI：10.1021/jo201179p

  日期：2011.9.16

  With the aim to find an efficient synthetic procedure for the construction of 2,3-diamino-2,3-dideoxy-beta-D-mannuronic acids, we evaluated three mannosyl donors: (S)-phenyl 4,6-di-O-acetyl-2,3-diazido mannopyranoside, (S)-phenyl 2,3-diazido-4,6-O-benzylidene mannopyranoside, and (S)-phenyl 2,3-diazido mannopyranosyl methyl uronate. The first two mannosylating agents are rather unselective or slightly a-selective in their condensation with three different acceptors. The mannuronic acid donor on the other hand reliably provides the desired beta-mannosidic linkage. A mechanistic rationale is put forward to account for the different behavior of the three donor types. Suitably protected 2,3-diazido mannuronic acids were employed to construct the all-cis-linked tetrasaccharide repeating unit of the capsular polysaccharide of Bacillus stearothermophilus, featuring two 2,3-diacetamido-2,3-dideoxy-beta-D-mannuronic acids.