phenyl 2,3,4-tri-O-acetyl-1-thio-β-L-rhamnopyranoside | 181136-65-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: phenyl 2,3,4-tri-O-acetyl-1-thio-β-L-rhamnopyranoside
• 英文别名: phenyl 2,3,4-tri-O-acetyl-1-thio-L-rhamnopyranoside；beta-L-Mannopyranoside, phenyl 6-deoxy-1-thio-, 2,3,4-triacetate；[(2S,3S,4R,5R,6R)-4,5-diacetyloxy-2-methyl-6-phenylsulfanyloxan-3-yl] acetate
• CAS: 181136-65-2
• 化学式: C₁₈H₂₂O₇S
• 分子量: 382.434
• InChiKey: YPJGKQRQWRZEKO-UPXIOTMHSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  26
• 可旋转键数：
  8
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  113
• 氢给体数：
  0
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  phenyl 2,3,4-tri-O-acetyl-1-thio-β-L-rhamnopyranoside 在 camphor-10-sulfonic acid 、 sodium methylate 、 sodium hydride 、 二正丁基氧化锡 、 三氟乙酸 作用下， 以 四氢呋喃 、 甲醇 、 丙酮 、 苯 为溶剂， 反应 44.0h， 生成 S-phenyl 3,4-di-O-benzyl-1-thio-β-L-rhamnopyranoside
  参考文献：
  名称：

  Direct Synthesis of the β-l-Rhamnopyranosides

  摘要：

  [GRAPHICS]The direct formation Of beta-L-rhamnopyranosides by means of thioglycoside donors protected with a 2-O-sulfonate ester and, ideally, a 4-O-benzoyl ester, is reported. Activation is achieved with the combination of 1-benzenesulfinyl piperidine and triflic anhydride in the presence of 2,4,6-tri-tert-butylpyrimidine. Selectivities vary from moderate to good, and the sulfonyl group is easily removed post-glycosylation with sodium amalgam in 2-propanol.

  DOI：

  10.1021/ol0340890
• 作为产物：
  描述：

  L-rhamnopyranose 在 吡啶 、 氢氧化钾 、 氢溴酸 作用下， 以 乙醇 、 二氯甲烷 、 乙酸酐 、 丙酮 为溶剂， 反应 4.0h， 生成 phenyl 2,3,4-tri-O-acetyl-1-thio-β-L-rhamnopyranoside
  参考文献：
  名称：

  Synthesis of Lewis X trisaccharide analogues in which glucose and rhamnose replace N-acetylglucosamine and fucose, respectively

  摘要：

  Two analogues of the Le(x) trisaccharide, alpha-L-Fucp -(1 --> 3)-[beta-D-Galp -(1 --> 4)]-D-Glcp were synthesized as allyl glycosides. In these derivatives either only the N-acetylglucosamine is replaced by glucose or both the N-acetylglucosamine and the facosyl residue are replaced by glucose and rhamnose, respectively. Our synthetic scheme used armed beta-thiophenyl fuco- and rhamnoside glycosyl donors that were prepared anomerically pure from the corresponding alpha-glycosyl bromides. The protecting groups were chosen to allow access to the fully deprotected trisaccharides without reduction of the allyl glycosidic group. These analogues will be used as soluble antigens in binding experiments with anti-Le(x) antibodies and can also be conjugated to a carrier protein and used as immunogens. In the course of this synthetic work, we also describe the use of reversed-phase HPLC to purify key protected trisaccharide intermediates prior to their deprotection. (C) 2003 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0008-6215(03)00053-3

文献信息

• 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。
• Glycosylation Reactions Using Phenyl(trifluoroethyl)iodonium Salts
  申请人：Trustees of Tufts College

  公开号：US20150099870A1

  公开（公告）日：2015-04-09

  Provided are methods for the preparation of glycosylation products, including those represented by formula I: Sugar-O—R′  I comprising the step of combining R′—OH, a glycosyl sulfide glycosyl donor (“thioglycoside donor”), a hypervalent iodine alkyl-transfer activating reagent, and a base. In an embodiment, the hypervalent iodine alkyl-transfer activating reagent is (phenyl(trifluoroethyl)iodonium triflimide).

  提供了制备糖基化产物的方法，包括由式I表示的那些： 糖-O—R′  I 包括将R′—OH、糖基硫醚糖基供体（“硫代糖苷供体”）、高价碘烷基转移活化试剂和碱结合的步骤。在一种实施例中，高价碘烷基转移活化试剂为（苯基(三氟乙基)碘三氟甲磺酰胺）。
• Synthesis of Cardiotonic Steroids Oleandrigenin and Rhodexin B
  作者：Zachary Fejedelem、Nolan Carney、Pavel Nagorny

  DOI：10.1021/acs.joc.1c00985

  日期：2021.8.6

  This article describes a concise synthesis of cardiotonic steroids oleandrigenin (7) and its subsequent elaboration into the natural product rhodexin B (2) from the readily available intermediate (8) that could be derived from the commercially available steroids testosterone or DHEA via three-step sequences. These studies feature an expedient installation of the β16-oxidation based on β14-hydroxyl-directed

  本文描述了强心类固醇夹竹桃素 ( 7 ) 的简明合成，以及随后从容易获得的中间体 ( 8 ) 到天然产物罗得辛 B ( 2 ) 的精制，该中间体可通过三步从市售类固醇睾酮或 DHEA 衍生而来序列。这些研究的特点是基于 β14-羟基定向环氧化和随后的环氧化物重排，方便地安装 β16-氧化。随后 C17 呋喃部分的单线态氧氧化可通过 12 个步骤 (LLS)获得夹竹桃素 ( 7 )，并且8 的总产率为 3.1% 。使用 Pd(II) 催化剂，合成的夹竹桃素 ( 7 ) 成功地与基于L -吡喃鼠李糖苷的供体28进行糖基化，随后在酸性条件下脱保护，以 66% 的产率（两步）提供了细胞毒性天然产物罗糊精 B ( 2 ) ）。
• 一类蒽醌并咪唑核苷类似物及其合成方法和 应用
  申请人：河南师范大学

  公开号：CN108822170B

  公开（公告）日：2021-08-20

  本发明公开了一类蒽醌并咪唑核苷类似物及其合成方法和应用，属于化学及医药技术领域。本发明的技术方案要点为：一类蒽醌并咪唑核苷类似物，其结构式为：本发明还具体公开了该蒽醌并咪唑核苷类似物的合成方法及其在制备抗癌药物中的应用。本发明在蒽醌化合物上通过咪唑的形式链接上各种五元糖和六元糖时得到了一系列结构新颖且具有生物活性的蒽环抗生素和核苷类似物，具有较好的应用前景。
• A concise synthesis of rhamnan oligosaccharides with alternating α-(1→2)/(1→3)-linkages and repeating α-(1→3)-linkages by iterative α-glycosylation using disaccharide building blocks
  作者：Hidenori Tanaka、Yu Hamaya、Nagatoshi Nishiwaki、Hideharu Ishida

  DOI：10.1016/j.carres.2017.11.005

  日期：2018.1

  with alternating α-(1→2)/(1→3)-linkages and repeating α-(1→3)-linkages is reported. This synthesis was achieved by iterative α-glycosylation using disaccharide building blocks and through orthogonal coupling between thioglycosides of L-rhamnose. To investigate the detailed structure-activity relationship of rhamnan sulfate from Monostroma nitidum against herpes simplex virus type 2, the synthesized

  据报道，简明的合成途径是鼠李糖寡糖具有交替的α-（1→2）/（1→3）-键和重复的α-（1→3）-键。该合成通过使用二糖结构单元的迭代α-糖基化和L-鼠李糖的硫糖苷之间的正交偶联来实现。为了研究针叶单胞菌硫酸鼠李聚糖硫酸盐对2型单纯疱疹病毒的详细的构效关系，预期具有不同正交保护基团（即苯甲酰基，苄基，2-萘甲基和/或对甲氧基苄基）的合成寡糖适用于转化为具有多种硫酸化模式的多种鼠李聚糖结构。