methyl 2,3,4-tri-O-benzyl-6-O-(2,3,5-tri-O-benzyl-β-D-ribofuranosyl)-α-D-glucopyranoside | 86883-48-9

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl 2,3,4-tri-O-benzyl-6-O-(2,3,5-tri-O-benzyl-β-D-ribofuranosyl)-α-D-glucopyranoside
• 英文别名: methyl 6-O-(2,3,5-tri-O-benzyl-β-D-ribofuranosyl)-2,3,4-tri-O-benzyl-α-D-glucopyranoside；methyl 2,3,4-tri-O-benzyl-6-O-(2,3,5-tri-O-benzyl-β-D-ribofuranosyl)-D-glucopyranoside；Bn(-2)[Bn(-3)][Bn(-5)]Ribf(b1-6)[Bn(-2)][Bn(-3)][Bn(-4)]a-Glc1Me；(2R,3R,4S,5R,6S)-2-[[(2R,3R,4R,5R)-3,4-bis(phenylmethoxy)-5-(phenylmethoxymethyl)oxolan-2-yl]oxymethyl]-6-methoxy-3,4,5-tris(phenylmethoxy)oxane
• CAS: 86883-48-9
• 化学式: C₅₄H₅₈O₁₀
• 分子量: 867.049
• InChiKey: PBQRGXCYBBCRLI-NXZZRRDTSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  8.1
• 重原子数：
  64
• 可旋转键数：
  23
• 环数：
  8.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  92.3
• 氢给体数：
  0
• 氢受体数：
  10

反应信息

• 作为产物：
  描述：

  2,3,5-tri-O-benzyl-α-D-ribofuranosyl fluoride 在 molecular sieve 、 三氟化硼乙醚 、 triphenylmethyl perchlorate 、 tin(ll) chloride 作用下， 以 乙醚 为溶剂， 反应 0.17h， 生成 methyl 2,3,4-tri-O-benzyl-6-O-(2,3,5-tri-O-benzyl-β-D-ribofuranosyl)-α-D-glucopyranoside
  参考文献：
  名称：

  使用呋喃糖基氟化物立体选择性合成 1,2-顺式-呋喃糖苷

  摘要：

  在氯化亚锡和高氯酸三苯甲基酯的存在下，通过 β-呋喃核糖基氟和醇的反应，以高产率立体选择性地合成 1,2-顺式-呋喃核糖苷。在类似条件下，α-阿拉伯呋喃糖基氟与胆甾醇反应主要生成1,2-顺式-阿拉伯呋喃糖苷。

  DOI：

  10.1246/cl.1983.935

文献信息

• Lanthanoid(III) triflates as new glycosylation catalysts. Selective and efficient activation of 1-O-methoxyacetyl sugars
  作者：Junji Inanaga、Yasuo Yokoyama、Takeshi Hanamoto

  DOI：10.1016/s0040-4039(00)73563-5

  日期：1993.4

  The reactions of 1-O-methoxyacetyl sugars with alcohols or thiols were effectively promoted by a catalytic amount of lanthanoid(III) triflates such as Tb(OTf)3, Ho(OTf)3, Tm(OTf)3, and Yb(OTJ)3 to give the corresponding glycosides in good to excellent yields.

  催化量的镧系元素（III）三氟甲磺酸酯如Tb（OTf）3，Ho（OTf）3，Tm（OTf）3和Yb（OTJ ）有效地促进了1- O-甲氧基乙酰基糖与醇或硫醇的反应）3以良好至极好的产率得到相应的糖苷。
• Tandem Catalysis Strategy for Direct Glycosylation of 1-Hydroxy Sugars. Methoxyacetic Acid as an Effective Catalytic Mediator
  作者：Yasuo Yokoyama、Junji Inanaga、Takeshi Hanamoto、Shoko Suzuki、Hiroshi Furuno、Kosuke Shimizu

  DOI：10.3987/com-08-s(d)74

  日期：——

  1-Hydroxy sugars were dehydratively coupled with a variety of alcohols including thiophenol in the presence of a catalytic amount of ytterbium(III) triflate [Yb(OTf) 3 ] and methoxyacetic acid to give the corresponding glycosides in good to excellent yields, and in some cases, with high stereoselectivities. The reaction proceeds through selective esterification of 1-hydroxy sugars with methoxyacetic

  在催化量的三氟甲磺酸镱 (III) [Yb(OTf) 3 ] 和甲氧基乙酸的存在下，将 1-羟基糖与包括苯硫酚在内的多种醇脱水偶联，得到相应的糖苷，收率良好至极好，并且在在某些情况下，具有高立体选择性。在作为糖基受体的游离醇存在下，该反应通过 1-羟基糖与甲氧基乙酸的选择性酯化进行。讨论了甲氧基乙酸介导的Yb(OTf) 3 串联催化的机理。
• Au^III-Halide/Phenylacetylene-Cata­lysed Glycosylations Using 1-<i>O</i>-Acetyl­furanoses and Pyranose 1,2-Ortho­esters as Glycosyl Donors
  作者：Asadulla Mallick、Yakkala Mallikharjunarao、Parasuraman Rajasekaran、Rashmi Roy、Yashwant D. Vankar

  DOI：10.1002/ejoc.201501245

  日期：2016.1

  1-O-Acetylfuranoses and pyranose 1,2-orthoesters were activated with an AuIII halide/phenylacetylene relay catalyst system, and they acted as excellent glycosyl donors. Thus, 1-O-acetyl-D-ribofuranose, 1-O-acetyl-D-lyxofuranose, and 1,2-orthoesters selectively gave the corresponding 1,2-trans glycosides, whereas 1-O-acetyl-D-arabinofuranose and 1-O-acetyl-D-xylofuranose both gave mixtures of 1,2-trans

  1-O-乙酰呋喃糖和吡喃糖 1,2-原酸酯用 AuIII 卤化物/苯乙炔中继催化剂系统活化，它们是优良的糖基供体。因此，1-O-乙酰基-D-呋喃核糖、1-O-乙酰基-D-lyxofuranose 和 1,2-原酸酯选择性地产生相应的 1,2-反式糖苷，而 1-O-乙酰基-D-阿拉伯呋喃糖和1-O-乙酰基-D-呋喃木糖均产生1,2-反式和1,2-顺式糖苷的混合物，其中以1,2-反式糖苷为主。
• An Efficient Glycosylation Reaction of 1-Hydroxy Sugars with Various Nucleophiles Using A Catalytic Amount of Activator and Hexamethyldisiloxane
  作者：Teruaki Mukaiyama、Koki Matsubara、Miyuki Hora

  DOI：10.1055/s-1994-25695

  日期：——

  In the presence of hexamethyldisiloxane and anhydrous calcium sulfate, a catalytic amount of activator such as tin(II) trifluoromethanesulfonate, ytterbium trifluoromethanesulfonate , lanthanum trifluoromethanesulfonate or tin(II) chloride smoothly promotes the glycosylation reactions between 1-hydroxy sugars and free alcohols, electron-rich aromatic compounds or silylated nucleophiles to produce various O -, C - or N - glycosides stereoselectively in high yields. In the case of oxygen or nitrogen nucleophiles, β-ribosides are formed, except that α-ribosides are obtained predominantly in the presence of lithium perchlorate. In the case of carbon nucleophiles such as electron-rich aromatic compounds or silyl enol ethers derived from carbonyl compounds, perfect β-selectivity is shown either in the the presence or absence of lithium perchlorate. Further, pyranosyl substrates such as glucose or galactose afford the corresponding α-anomers, except with electron-rich aromatic compounds.

  在六甲基二硅氧烷和无水硫酸钙的存在下，以催化量的活化剂（如二氟三氟甲磺酸锡、三氟三氟甲磺酸镱、三氟三氟甲磺酸镧或二氯化锡）顺利促进1-羟基糖与自由醇、富电子芳香化合物或硅化亲核试剂之间的糖基化反应，高产率地选择性合成各种O-、C-或N-糖苷。对于氧或氮亲核试剂，主要生成β-核糖苷，但在高氯酸锂存在下主要得到α-核糖苷。对于碳亲核试剂（如富电子芳香化合物或来自羰基化合物的硅基烯醇醚），无论在高氯酸锂存在或不存在下，均表现出完全的β-选择性。此外，吡喃糖基底物（如葡萄糖或半乳糖）主要生成相应的α-异构体，但对于富电子芳香化合物则例外。
• Catalytic O- and S-glycosylation of 1-hydroxy sugars
  作者：Junji Lnanaga、Yasuo Yokoyama、Takeshi Hanamoto

  DOI：10.1039/c39930001090

  日期：——

  O-Protected 1-hydroxy sugars are effectively cross-coupled with a variety of alcohols and thiols to give the corresponding glycosides by using methoxyacetic acid and ytterbium(III) trifluoromethanesulfonate [Yb(OTf)3] as catalytic promoters.

  通过使用甲氧基乙酸和（III）三氟甲磺酸盐[Yb（OTf）3 ]作为催化促进剂，可以使O保护的1-羟基糖与各种醇和硫醇有效地交叉偶联，从而生成相应的糖苷。