methyl 2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl-(1-6)-2,3,4-tri-O-benzyl-α-D-glucopyranoside

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl 2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl-(1-6)-2,3,4-tri-O-benzyl-α-D-glucopyranoside
• 英文别名: methyl 2,3,4-tri-O-benzyl-6-O-(2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl)-α-D-glucopyranoside；methyl (2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl)-(1→6) 2,3,4-tri-O-benzyl-α-D-glucopyranoside；methyl 2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl-(1->6)-2,3,4-tri-O-benzyl-α-D-glucopyranoside；methyl-O-(2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl)-(1->6)-2,3,4-tri-O-benzyl-α-D-glucopyranoside；methyl 2,3,4-tri-O-benzyl-6-O-(2,3,4,6-tetra-O-benzyl-D-glucopyranosyl)-α-D-glucopyranoside；methyl (2,3,4,6-tetra-O-benzyl-D-glucopyranosyl)-(1→6)-2,3,4-tri-O-benzyl-D-glucopyranoside；methyl 6-O-(2,3,4,6-tetra-O-benzyl-D-glucopyranosyl)-2,3,4-tri-O-benzyl-α-D-glucopyranoside；Bn(-2)[Bn(-3)][Bn(-4)][Bn(-6)]Glc(b1-6)[Bn(-2)][Bn(-3)][Bn(-4)]a-Glc1Me；(2S,3R,4S,5R,6R)-2-methoxy-3,4,5-tris(phenylmethoxy)-6-[[(2R,3R,4S,5R,6R)-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-yl]oxymethyl]oxane
• 化学式: C₆₂H₆₆O₁₁
• 分子量: 987.199
• InChiKey: FLOIPOSVHDNCRB-KJBGKYNMSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  9.5
• 重原子数：
  73
• 可旋转键数：
  26
• 环数：
  9.0
• sp3杂化的碳原子比例：
  0.32
• 拓扑面积：
  102
• 氢给体数：
  0
• 氢受体数：
  11

反应信息

• 作为反应物：
  描述：

  methyl 2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl-(1-6)-2,3,4-tri-O-benzyl-α-D-glucopyranoside 在 四氯化钛 作用下， 以 二氯甲烷 为溶剂， 反应 0.01h， 以46%的产率得到methyl O-2,3,4,6-tetra-O-benzyl-α-D-glucopyranosyl-(1->6)-2,3,4-tri-O-benzyll-α-D-glucopyranoside
  参考文献：
  名称：

  四氯化钛快速异构化聚-O-苄基-β-D-吡喃葡萄糖苷的研究

  摘要：

  四氯化钛在 25 °C 的二氯甲烷中快速异构化甲基 2,3,4,6-四-O-苄基-β-D-吡喃葡萄糖苷。描述了 C-5 上的苄氧基甲基和糖苷的环氧协同促进反应的证据。该试剂将几种二糖衍生物的糖苷间键异构化。

  DOI：

  10.1246/bcsj.55.1092
• 作为产物：
  描述：

  (2R,3R,4S,5R,6S)-2-(acetoxymethyl)-6-(phenylthio)tetrahydro-2H-pyran-3,4,5-triyl triacetate 在 1-(苯基亚硫酰基)哌啶 、 2,4,6-三叔丁基吡啶 、 sodium methylate 、 sodium hydride 作用下， 以 甲醇 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 0.5h， 生成 methyl 2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl-(1-6)-2,3,4-tri-O-benzyl-α-D-glucopyranoside
  参考文献：
  名称：

  Directing effect by remote electron-withdrawing protecting groups at O-3 or O-4 position of donors in glucosylations and galactosylations

  摘要：

  Glucosylations and galactosylations of various acceptors with donors possessing an electronwithdrawing benzylsulfonyl, benzoyl, or acetyl group at the O-3 or O-4 position were performed. A beta-directing effect by the benzylsulfonyl group at O-3 of the glucosyl donors and by the benzylsulfonyl and acyl groups at O-4 of the glucosyl donors was observed. In contrast, acyl groups at O-3 of the glucosyl donors and acyl groups at O-3 and O-4 of the galactosyl donors exhibited an alpha-directing effect. The alpha-directing effect is partly considered to remote participation of the acyl groups, whereas the beta-directing effect is somewhat attributed to the S(N)2-like reaction of the acceptor with the glycosyl triflate or the contact ion pair, which is stabilized by remote electron-withdrawing groups. Further evidence for the stability of the alpha-glycosyl triflates was determined by a low-temperature NMR study. (C) 2015 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2015.06.014

文献信息

• [EN] HEPARANASE INHIBITORS AND THEIR USE AS ANTI-CANCER COMPOUNDS<br/>[FR] INHIBITEURS D'HÉPARANASE ET LEUR UTILISATION COMME COMPOSÉS ANTICANCÉREUX
  申请人：UNIV WAYNE STATE

  公开号：WO2020118103A1

  公开（公告）日：2020-06-11

  Anti-heparanase compounds for the treatment of cancer are described. The anti-heparanase compounds are high affinity, synthetic glycopolymers that result in minimal anticoagulant activity. Stereoselective fluorinated forms of these compounds are also provided.

  描述了用于治疗癌症的抗肝素酶化合物。这些抗肝素酶化合物是高亲和力的合成糖聚合物，导致最小的抗凝活性。此外还提供了这些化合物的立体选择性氟化形式。
• Stereoselective Glycosylation Reactions
  申请人：Trustees of Tufts College

  公开号：US20140303359A1

  公开（公告）日：2014-10-09

  Disclosed is a method for selective synthesis of 1,2-cis-α-linked glycosides which does not require the use of the specialized protecting group patterns normally employed to control diastereoselectivity. Thioglycoside acceptors can be used, permitting iterative oligosaccharide synthesis. The approach eliminates the need for lengthy syntheses of monosaccharides possessing highly specialized and unconventional protecting group patterns.

  揭示了一种选择性合成1,2-顺式α-连接的糖苷的方法，该方法不需要通常用于控制对映选择性的专门保护基团模式。可以使用硫代糖苷受体，从而允许进行寡糖合成。该方法消除了需要合成具有高度专门化和非常规保护基团模式的单糖的冗长合成过程。
• An Air- and Water-Stable Iodonium Salt Promoter for Facile Thioglycoside Activation
  作者：An-Hsiang Adam Chu、Andrei Minciunescu、Vittorio Montanari、Krishna Kumar、Clay S. Bennett

  DOI：10.1021/ol5004059

  日期：2014.3.21

  iodonium salt phenyl(trifluoroethyl)iodonium triflimide is shown to activate thioglycosides for glycosylation at room temperature. Both armed and disarmed thioglycosides rapidly undergo glycosylation in 68–97% yield. The reaction conditions are mild and do not require strict exclusion of air and moisture. The operational simplicity of the method should allow experimentalists with a limited synthetic background

  空气和水稳定的碘鎓盐苯基（三氟乙基）碘鎓三氟甲磺酰亚胺在室温下可激活硫代糖苷以进行糖基化。武装和解除武装的硫糖苷都以 68-97% 的产率迅速进行糖基化。反应条件温和，不需要严格排除空气和水分。该方法的操作简单性应该允许具有有限合成背景的实验者构建糖苷键。
• Gold(I)-Catalyzed Glycosylation with Glycosyl Ynenoates as Donors
  作者：Xiaona Li、Chenyu Li、Rongkun Liu、Jiazhe Wang、Zixuan Wang、Yan Chen、You Yang

  DOI：10.1021/acs.orglett.9b03851

  日期：2019.12.6

  A simple and versatile glycosylation method with both armed and disarmed glycosyl ynenoates as donors is developed. Employing a gold(I) complex as catalyst with or without the assistance of TfOH, the scope of the present glycosylation protocol is very wide. The utility of the present ynenoate donors is demonstrated in the efficient synthesis of oligosaccharides via the latent-active strategy and the

  开发了一种简单且通用的糖基化方法，其中武装和解除武装的糖基炔诺酸酯都作为供体。在有或没有TfOH的辅助下采用金（I）配合物作为催化剂，本糖基化方案的范围非常宽。通过潜在的活性策略和多重正交一锅策略在低聚糖的有效合成中证明了本发明的炔酸供体的实用性。最后，该方法能够正式合成肺炎链球菌血清型3的四糖半抗原和32mer聚甘露糖苷的高度收敛合成。
• An efficient construction of 1,2-trans-β-glycosidic linkages capitalizing on glycopyranosyl N,N,N′,N′-tetramethylphosphroamidates as shelf-stable glycosyl donors
  作者：Shun-ichi Hashimoto、Yuki Yanagiya、Takeshi Honda、Hideki Harada、Shiro Ikegami

  DOI：10.1016/s0040-4039(00)92679-0

  日期：1992.6

  stereocontrolled 1,2-trans-β-glycosidation reaction with or without neighbouring group participation has been developed by using benzyl- or benzoyl-protected glycopyranosyl N,N,N',N'-tetramethylphosphoroamidates as shelf-stable glycosyl donors in the presence of trimethylsilyl trifluoromethanesulfonate or boron trifluoride etherate. Several notable features of the present method not observed with the diphenyl

  通过使用苄基或苯甲酰基保护的吡喃葡萄糖基N，N，N'，N'-四甲基磷酰胺基酸酯作为在货架上稳定的糖基供体，已经开发了具有或不具有邻近基团参与的高度立体控制的1,2-反式-β-糖苷化反应。存在三甲基甲硅烷基三氟甲磺酸盐或三氟化硼醚化物。还描述了用磷酸二苯酯法未观察到的本方法的几个显着特征。