(2,3,4,6-tetra-O-benzyl-β-D-mannopyranosyl)ethyne | 219864-04-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (2,3,4,6-tetra-O-benzyl-β-D-mannopyranosyl)ethyne
• 英文别名: 3,7-anhydro-4,5,6,8-tetra-O-benzyl-1,2-dideoxy-D-glycero-D-galacto-oct-1-ynitol；3,7-anhydro-4,5,6,8-tetra-O-benzyl-1,1,2,2-tetradehydro-1,2-D-glycero-L-galactooctitol；(2S,3R,4R,5R,6R)-2-ethynyl-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxane
• CAS: 219864-04-7
• 化学式: C₃₆H₃₆O₅
• 分子量: 548.679
• InChiKey: ODYZSGODFGXEDP-BHSUMJALSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.7
• 重原子数：
  41
• 可旋转键数：
  13
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.28
• 拓扑面积：
  46.2
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  (2,3,4,6-tetra-O-benzyl-β-D-mannopyranosyl)ethyne 在 palladium diacetate 四丁基氟化铵 、 三乙胺 、 三苯基膦 作用下， 以 四氢呋喃 为溶剂， 生成 2-(2,3,4,6-tetra-O-benzyl-β-D-mannopyranosyl)-1H-indole
  参考文献：
  名称：

  Synthesis of β-analogues of C-mannosyltryptophan, a novel C-glycosylamino acid found in proteins

  摘要：

  α-C-甘露糖基色氨酸（α-C-Man-Trp）被发现是一种新的色氨酸翻译后修饰，存在于一些生物重要的糖蛋白中。为了分析α-C-Man-Trp的生物功能，我们开发了一种高效的合成策略，用于α-C-Man-Trp及其葡萄糖和半乳糖类似物，从对应的六糖派拉诺糖衍生物与乙炔锡的α-C-糖苷化反应开始。根据合成路线，我们在此描述了从相应的β-C-糖苷乙炔衍生物合成β-异构体的C-Man-Trp及其葡萄糖和半乳糖类似物。在这项研究中，我们开发了一种高度立体选择性合成β-C-甘露糖基乙炔的方法，这是合成β-C-Man-Trp所必需的，而先前的方法则给出了C-甘露糖基乙炔的异构体混合物。合成的C-Man-Trp及其类似物通过高效液相色谱（HPLC）进行了分析。

  DOI：

  10.1039/b516282c
• 作为产物：
  描述：

  4,5,6,8-tetra-O-benzyl-1,1,2,2-tetradehydro-1,2-dideoxy-1-C-(trimethylsilyl)-D-mannooct-3-ulopyranose 在 三(三甲基硅基)硅烷 、 三氟化硼乙醚 、 四丁基氟化铵 作用下， 以 四氢呋喃 、 二氯甲烷 、 乙腈 为溶剂， 反应 3.0h， 生成 (2,3,4,6-tetra-O-benzyl-β-D-mannopyranosyl)ethyne
  参考文献：
  名称：

  Synthesis of β-analogues of C-mannosyltryptophan, a novel C-glycosylamino acid found in proteins

  摘要：

  α-C-甘露糖基色氨酸（α-C-Man-Trp）被发现是一种新的色氨酸翻译后修饰，存在于一些生物重要的糖蛋白中。为了分析α-C-Man-Trp的生物功能，我们开发了一种高效的合成策略，用于α-C-Man-Trp及其葡萄糖和半乳糖类似物，从对应的六糖派拉诺糖衍生物与乙炔锡的α-C-糖苷化反应开始。根据合成路线，我们在此描述了从相应的β-C-糖苷乙炔衍生物合成β-异构体的C-Man-Trp及其葡萄糖和半乳糖类似物。在这项研究中，我们开发了一种高度立体选择性合成β-C-甘露糖基乙炔的方法，这是合成β-C-Man-Trp所必需的，而先前的方法则给出了C-甘露糖基乙炔的异构体混合物。合成的C-Man-Trp及其类似物通过高效液相色谱（HPLC）进行了分析。

  DOI：

  10.1039/b516282c

文献信息

• Practical Gram-Scale Synthesis of Either α- or β-Anomer of C-Vinyl Glycosides
  作者：Florian Rouzier、Rosanne Sillé、Arnaud Nourry、Arnaud Tessier、Muriel Pipelier、Stéphane Guillarme

  DOI：10.1055/s-0037-1611800

  日期：2019.6

  Abstract The synthesis C-vinyl glycosides, useful intermediates for the synthesis of C-glycoconjugates, was carried out on gram-scale by controlled reduction of the corresponding ethynyl derivatives in good to excellent yields in different carbohydrate series. The synthesis C-vinyl glycosides, useful intermediates for the synthesis of C-glycoconjugates, was carried out on gram-scale by controlled reduction

  抽象的 合成Ç -乙烯基苷，有用的中间体用于合成Ç -glycoconjugates，通过在良好对应的乙炔基衍生物的受控降低上进行克级在不同的碳水化合物系列优异的产率。 合成Ç -乙烯基苷，有用的中间体用于合成Ç -glycoconjugates，通过在良好对应的乙炔基衍生物的受控降低上进行克级在不同的碳水化合物系列优异的产率。
• Unexpected formation of glycals upon attempted C-alkylation of protected glycosylacetylenes
  作者：Tedd M. Davis、Todd L. Lowary

  DOI：10.1016/s0008-6215(99)00296-7

  日期：2000.2

  4-trideoxy-D-arabino-oct-3-en-1-yn itol (glycal acetylene, 3) as the major product. Additional studies showed that 3 is also produced from two isomers of 1 with alpha-D-mannosyl and beta-D-glucosyl stereochemistry, but in lower yields. Furthermore, substrates in which the acetylene moiety is replaced by either a methyl or phenyl group do not produce a glycal product under these conditions. Finally,

  3,7-脱水-4,5,6,8-四-O-苄基-1,2-二脱氧-D-甘油-D-半乳糖-辛-1-炔醇的处理（β-D-甘露糖基乙炔，1 ）在0或-78摄氏度下用5当量的正丁基锂制得苄醇，从而制得3,7-脱水-5,6,8-三-O-苄基-1,2,4-三甲氧基-D-阿拉伯糖-oct-3-en-1-yn醇（糖基乙炔，3）为主要产品。进一步的研究表明，具有α-D-甘露糖基和β-D-葡萄糖基立体化学的1的两个异构体也可产生3，但收率较低。此外，在这些条件下，其中乙炔部分被甲基或苯基取代的底物不会产生糖基产物。最后，用苯基锂处理1会以低收率得到3。氘标记研究表明，反应通过E2而不是E1cB机制进行。
• Synthesis of α- and β-Glycosyl Asparagine Ethylene Isosteres (<i>C</i>-Glycosyl Asparagines) via Sugar Acetylenes and Garner Aldehyde Coupling
  作者：Alessandro Dondoni、Giandomenico Mariotti、Alberto Marra

  DOI：10.1021/jo020054m

  日期：2002.6.1

  A convergent approach has been developed for the synthesis of C-glycosyl amino acids in which the glycinyl moiety CH(NH2)CO2H is connected to the anomeric center of the sugar residue by a three carbon atom tether. Essentially, these compounds are isosteres of N-glycosyl asparagines in which the amide group has been replaced by an ethylene bridge. Following the coupling of alpha- or beta-D-linked lithium C-glycoside acetylides with N-Boc D-serinal acetonide (Garner aldehyde), the resulting adducts were transformed into the final N-Boc-C-glycosyl-alpha-aminopentanoic acids via reduction of the triple bond, deoxygenation, and oxidative cleavage of the oxazolidine ring. By this protocol, 12 C-glycosyl asparagines, six pairs of alpha- and beta-anomers, have been prepared incorporating the gluco, galacto, manno, and the corresponding 2-acetamido-2-deoxy residues.
• Novel Type of Rigid C-Linked Glycosylacetylene−Phenylalanine Building Blocks for Combinatorial Synthesis of C-linked Glycopeptides
  作者：Todd Lowary、Morten Meldal、Arnim Helmboldt、Andrea Vasella、Klaus Bock

  DOI：10.1021/jo980517h

  日期：1998.12.1

  C-linked 3- and 4-(glycosylacetylene)-Fmoc-phenylalanines were synthesized as rigid building blocks for synthesis of libraries of neoglycopeptide templates. Perbenzylated 1,5-galactonolactone, 1,5-gluconolactone, and 1,5-mannonolactone were reacted with cerium TMS-acetylide and the products reduced to the C-glycosylacetylene-TMS derivatives. The gluco and galacto configurations yielded exclusively the beta-C-glycoside, whereas the mannonolactone gave a mixture of alpha-C- and beta-C-anomer. The products were subjected to acetolysis and TMS cleavage. The resulting peracetylated glycosylacetylenes were cross-coupled with the (R,S)-N-alpha-acetyl-3- and 4-iodophenylalanine O-methyl esters by Pd(0) catalysis in piperidine to give the eight possible C-linked glycosyl amino acid building blocks 33-40 as diastereomeric pairs. These were O-deacetylated. As an example of further conversion into neoglycopeptide templates the N-acetyl group of the 4-linked galacto-diastereomeric pair 43 was hydrolyzed selectively by acylase 1 and separated from the (R)stereoisomer. The product was converted to 4-(beta-C-galactosylacetylene)(N-alpha-Fmoc-)-L-phenylalanine (52) by reaction with Fmoc-OSu. Acid hydrolysis of galactosyl acetylene phenyl alanine 43 at elevated temperature afforded the conversion of the acetylene to the 1'-oxo derivative which was also N-alpha-Fmoc protected. The building blocks were used in the glycopeptide synthesis of three neoglycopeptide templates 54, 55, and 56 known to bind to murine MHC class II E-k and to present the glycan for interaction with the T-cell receptor. This template has previously been employed to elicit a carbohydrate specific T-cell response.
• General, stereoselective synthesis of ethylene isosteres of α- and β-glycosylasparagines
  作者：Alessandro Dondoni、Giandomenico Mariotti、Alberto Marra

  DOI：10.1016/s0040-4039(00)00403-2

  日期：2000.4

  The coupling of alpha- or beta-D-linked lithium C-glycosyl acetylides with N-Boc D-serinal acetonide followed by the reduction of the triple bond, deoxygenation, and oxidative cleavage of the oxazolidine ring afforded alpha- and beta-anomer pairs of C-glycosyl alpha-aminopentanoic acids (gluco, manno, galacto, and 2-acetamido-galacto). (C) 2000 Elsevier Science Ltd. All rights reserved.