benzyl L-rhamnopyranoside | 251361-11-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: benzyl L-rhamnopyranoside
• 英文别名: (2S,3R,4R,5R)-2-methyl-6-phenylmethoxyoxane-3,4,5-triol
• CAS: 251361-11-2
• 化学式: C₁₃H₁₈O₅
• 分子量: 254.283
• InChiKey: UHQDDNIUJBFOEL-DDDSWKHLSA-N

物化性质

• 沸点：
  419.2±45.0 °C(predicted)
• 密度：
  1.30±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -0.2
• 重原子数：
  18
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.54
• 拓扑面积：
  79.2
• 氢给体数：
  3
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  benzyl L-rhamnopyranoside 在 吡啶 、 2,4,6-三甲基吡啶 、 丙泊酚 、 cerium(III) chloride heptahydrate 、 [(neocuproine)Pd(μ-OAc)]₂(OTf)₂ 、 氧气 、 1,8-双二甲氨基萘 、 bis(2,4-pentanedionato)dioxomolybdenum(VI) 作用下， 以 1,4-二氧六环 、 甲醇 、 二氯甲烷 、 乙腈 为溶剂， 反应 39.0h， 生成
  参考文献：
  名称：

  强效广谱抗生素阿米拉霉素和奇德洛霉素的全合成

  摘要：

  本文通过全合成证实了抗生素支链霉素和基德洛霉素的复杂而有趣的结构。对合成产物的仔细滴定表明，kibdelomycin 是 ammycolamicin 的盐形式。该合成采用高度收敛的策略，为进一步研究此类抗生素的 SAR 提供了模块化方法。

  DOI：

  10.1021/jacs.1c11477
• 作为产物：
  描述：

  L-rhamnopyranose 、 苯甲醇 在 盐酸 作用下， 以82%的产率得到benzyl L-rhamnopyranoside
  参考文献：
  名称：

  香豆素羧酸作为回旋酶B的抑制剂的合成和生物学评估。L-鼠李糖可替代L-新古糖。

  摘要：

  已经制备了一系列带有L-鼠李糖基部分作为分子糖部分的新生物素样香豆素羧酸。新型香豆素对DNA促旋酶的抑制活性与新霉素相似，这表明L-鼠李糖可以有效替代L-鼠新糖。在香豆素的C-5处引入烷基侧链可改善新系列的体外抗菌性能。

  DOI：

  10.1016/s0960-894x(99)00493-x

文献信息

• [EN] GLYCOCONJUGATES AND THEIR USE AS POTENTIAL VACCINES AGAINST INFECTION BY SHIGELLA FLEXNERI<br/>[FR] GLYCOCONJUGUÉS ET LEUR UTILISATION EN TANT QUE VACCINS POTENTIELS CONTRE UNE INFECTION PAR SHIGELLA FLEXNERI
  申请人：PASTEUR INSTITUT

  公开号：WO2014067970A1

  公开（公告）日：2014-05-08

  The present invention relates to a conjugate comprising an oligo- or polysaccharide selected from the group consisting of: (X)x-BCDA}n-(Y)y (X)x-CDAB}n-(Y)y (X)x-DABC}n-(Y)y (X)x-ABCD}n-(Y)y wherein A, B, C, D, X and Y, x, y and n are as defined in claim 1, said oligo- or polysaccharide being bound to a carrier.

  本发明涉及一种共轭物，其包括从以下组中选择的寡糖或多糖：(X)x-BCDA}n-(Y)y (X)x-CDAB}n-(Y)y (X)x-DABC}n-(Y)y (X)x-ABCD}n-(Y)y，其中A、B、C、D、X和Y、x、y和n的定义如权利要求1所述，所述寡糖或多糖与载体结合。
• Direct Glycosylation of Unprotected and Unactivated Sugars Using Bismuth Nitrate Pentahydrate
  作者：Innaiah K. Polanki、Siva H. Kurma、Asish K. Bhattacharya

  DOI：10.1080/07328303.2015.1028585

  日期：2015.5.4

  Bi(NO3)(3), a low-cost, mild, and environmentally green catalyst, has been successfully utilized for Fischer glycosylation for the synthesis of alkyl/aryl glycopyranosides by reacting unprotected sugars, namely, D-glucose, L-rhamnose, D-galactose, D-arabinose, and N-acetyl-D-glucosamine with various alcohols in good to excellent yields. The glycosides were formed with high alpha-selectivity. Further, an expedient separation of alpha- and beta-glycosides using silver nitrate-impregnated silica gel flash liquid chromatography has been developed.
• Direct Glycosylation of Bioactive Small Molecules with Glycosyl Iodide and Strained Olefin as Acid Scavenger
  作者：Xiangying Gu、Lin Chen、Xin Wang、Xiao Liu、Qidong You、Wenwei Xi、Li Gao、Guohua Chen、Yue-Lei Chen、Bing Xiong、Jingkang Shen

  DOI：10.1021/jo402551x

  日期：2014.2.7

  A new strategy for diversity-oriented direct glycosylation of bioactive small molecules was developed. This reaction features (-)-beta-pinene as acid scavenger and work with glycosyl iodides under mild conditions. With the aid of RP-HPLC and chiral SFC separation techniques, the new direct glycosylation proved effective at gram scale on bioactive small molecules including AZD6244, podophyllotoxin, paclitaxel, and docetaxel. Interesting glycoside derivatives were efficiently created with good yields and 1,2-cis selectivity.
• An Improved Synthesis of 4-<i>O</i>-Benzoyl-2,2-difluorooleandrose from <scp>l</scp>-Rhamnose. Factors Determining the Synthesis of 2,2-Difluorocarbohydrates from 2-Uloses
  作者：M. Isabel Barrena、M. Isabel Matheu、Sergio Castillón

  DOI：10.1021/jo971846x

  日期：1998.4.1

  4-O-Benzoyl-2,2-difluorooleandrose (16) has been synthesized from L-rhamnose. The key steps are the formation of a difluoromethylene group in 12 by reacting ulose 11 with DAST and the chemoselective methylation of diol 13 to give compound 14. To obtain the 2,2-difluoro compound 12, the substituents in the neighborhood of the carbonyl group in ulose 11 must be equatorial and the sugar ring must have restricted conformational mobility. This was done using 1,1,2,2-tetramethoxycyclohexane (TMC) to protect the hydroxyls at positions 3 and 4 in the sugar ring.
• GLYCOCONJUGATES AND THEIR USE AS POTENTIAL VACCINES AGAINST INFECTION BY SHIGELLA FLEXNERI
  申请人：Institut Pasteur

  公开号：EP2911698A1

  公开（公告）日：2015-09-02