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ethyl 2,4-di-O-benzoyl-1-thio-α-L-rhamnopyranoside | 135303-37-6

中文名称
——
中文别名
——
英文名称
ethyl 2,4-di-O-benzoyl-1-thio-α-L-rhamnopyranoside
英文别名
[(2S,3R,4R,5R,6S)-5-benzoyloxy-6-ethylsulfanyl-4-hydroxy-2-methyloxan-3-yl] benzoate
ethyl 2,4-di-O-benzoyl-1-thio-α-L-rhamnopyranoside化学式
CAS
135303-37-6
化学式
C22H24O6S
mdl
——
分子量
416.495
InChiKey
WEBFELSYNIYIJO-DHOHVAIUSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

物化性质

  • 沸点:
    602.7±55.0 °C(Predicted)
  • 密度:
    1.29±0.1 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    4.1
  • 重原子数:
    29
  • 可旋转键数:
    8
  • 环数:
    3.0
  • sp3杂化的碳原子比例:
    0.36
  • 拓扑面积:
    107
  • 氢给体数:
    1
  • 氢受体数:
    7

上下游信息

  • 上游原料
    中文名称 英文名称 CAS号 化学式 分子量
  • 下游产品
    中文名称 英文名称 CAS号 化学式 分子量

反应信息

  • 作为反应物:
    描述:
    ethyl 2,4-di-O-benzoyl-1-thio-α-L-rhamnopyranoside 在 palladium on activated charcoal 吡啶咪唑N-碘代丁二酰亚胺四溴化碳三氟甲磺酸 、 MS 4 Angstroem 、 氢气silver trifluoromethanesulfonate溶剂黄146三乙胺三苯基膦 作用下, 以 乙醇二氯甲烷乙腈 为溶剂, -75.0~100.0 ℃ 、413.69 kPa 条件下, 反应 55.5h, 生成
    参考文献:
    名称:
    Application of thioglycoside chemistry to the synthesis of trisaccharides and deoxy-trisaccharides related to the Shigella flexneri Y polysaccharide
    摘要:
    希格菌弗氏志贺氏菌脂多糖具有生物学重复单元,→ 2)α-L-Rhap(1→2)α-L-Rhap(1→3)α-L-Rhap(1→3)β-D-GlcNAcp(1 → ABCD,但残基段BCD足以填充O-抗原特异性单克隆抗体SYA/J6的结合位点。对这种三糖的合成修饰已经设计用于研究乙酰氨基团的结合参与,GlcNAc残基D的4-和6-OH基团,Rha残基C的4'-OH基团,以及Rha残基B的3"和4" -OH基团。通过使用由N-碘琥珀酰亚胺和三氟甲磺酸原位产生的碘酸盐离子激活的硫代糖苷糖供体,顺序链延伸提供了受保护的三糖18、24、26、28、30、32和35。通过使用3,6-双脱氧或4,6-双脱氧糖供体14和17,可以获得单脱氧的三糖,如环B25和27或环C29,当这些糖供体在顺序步骤中使用时,可以获得在相邻残基中双位点脱氧的三糖31和33。将葡萄糖胺残基选择性保护为其N-苄氧羰基衍生物,提供了一种简便的途径到达三糖氨基化合物20,从中可以直接制备N-乙酰基21、N-丙酰基22和N-三氟乙酰基23衍生物。在几种糖基化反应中检测到了正交酯中间体,并最终导致了正交醋酸酯34作为主要产物,而不是目标三糖35。当三氟甲磺酸浓度增加时,可以避免这些产物,但是2-O-乙酰基团的酸催化迁移导致了1→2和1→3连接的三糖35和37。为了避免类似的不良1,2-连接产物,选择了使用2-O-苯甲酰化二糖糖供体40的块合成策略,以便在导致葡萄糖胺单元D的C-6脱氧的三糖类似物反应中最小化正交酯形成的倾向。
    DOI:
    10.1139/v93-076
  • 作为产物:
    参考文献:
    名称:
    一种在合成硫代糖苷2,3-原酸酯过程中避免烷硫基迁移的简单方法。部分酰化的1-硫代-α-L-鼠李糖吡喃糖苷的改进合成。
    摘要:
    DOI:
    10.1016/0008-6215(92)80098-l
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文献信息

  • Synthesis of a pseudotetrasaccharide corresponding to a repeating unit of the <i>Streptococcus pneumoniae</i> type 6B capsular polysaccharide<sup>*</sup>
    作者:Elena V. Sukhova、Dmitry V. Yashunsky、Ekaterina A. Kurbatova、Yury E. Tsvetkov、Nikolay E. Nifantiev
    DOI:10.1080/07328303.2017.1420797
    日期:2018.1.2
    ABSTRACT ABSTRACT 2-Aminoethyl glycoside of the pseudotetrasaccharide α-d-Glcp-(1→3)-α-l-Rhap-(1→4)-d-Rib-ol-(5-P-2)-α-d-Galp structurally related to a repeating unit of the Streptococcus pneumoniae type 6B capsular polysaccharide has been synthesized. At the key step, suitably protected pseudotrisaccharide α-d-Glcp-(1→3)-α-l-Rhap-(1→4)-d-Rib-ol with a free 5-OH group in the ribitol moiety and 2-OH α-galactoside
    图解抽象假四糖α-d-Glcp-(1→3)-α-1-Rhap-(1→4)-d-Rib-ol-(5-P-2)-α-的2-基乙基糖苷已经合成了与肺炎链球菌6B型荚膜多糖的重复单元结构相关的d-Galp。在关键步骤中,适当保护的假三糖α-d-Glcp-(1→3)-α-1-Rhap-(1→4)-d-Rib-ol在核糖醇部分中具有游离的5-OH基,并且2使用膦酸氢盐步骤,通过磷酸桥连接-OHα-半乳糖苷。
  • An approach towards the synthesis of 1,2-trans glycosyl phosphates via iodonium ion assisted activation of thioglycosides
    作者:G.H. Veeneman、H.J.G. Broxterman、G.A.van der Marel、J.H.van Boom
    DOI:10.1016/0040-4039(91)80782-2
    日期:1991.10
    Phosphorylation of benzoylated ethyl 1,2-trans 1-thioglycosides with dibenzyl phosphate in the presence of NIS gave, after removal of all protecting groups, 1,2-trans glycosyl phosphates. The scope of the stereoselective method was demonstrated by the synthesis of GDP-fucose and the disaccharide α-d-Glcp-(1→3)-α-l-Rhap-1-PO4−.
    在除去所有保护基团后,在NIS存在下用磷酸二苄基酯对苯甲酰化的1,2-反式1-代1-代糖苷进行磷酸化,得到1,2-反式糖基磷酸酯。立体选择性方法的范围是由GDP-岩藻糖的合成,所述二糖α-d-GLC证实p(1→3)-α-L-鼠李糖- p -1-PO 4 - 。
  • Incidence and avoidance of stereospecific 1,2-ethylthio group migration during the synthesis of ethyl 1-thio-α-l-rhamnopyranoside 2,3-orthoester
    作者:France-Isabelle Auzanneau、David R. Bundle
    DOI:10.1016/0008-6215(91)84041-c
    日期:1991.6
    Abstract The 1,2-migration of an ethylthio group with inversion of configuration at the C-1 and C-2 atoms was observed during the attempted preparation of 2,3-orthoester derivatives of ethyl 1-thio-α- l -rhamnopyranoside. The rearrangement leading to the formation of methyl 2-thio-β- l -glucopyranosides could be avoided by preparing the orthoester in DMF rather than in acetonitrile and by using a controlled
    摘要在尝试制备乙基1-代-α-1-鼠李糖喃糖苷的2,3-原酸酯衍生物时,观察到乙基的1,2-迁移,其C-1和C-2原子的构型反转。通过在DMF中而不是在乙腈中制备原酸酯,并通过使用可控制量的酸催化剂,可以避免导致甲基2-代-β-1-葡萄糖喃糖苷形成的重排。
  • Efficient stereoselective synthesis of oligosaccharides of Streptococcus pneumoniae serotypes 6A and 6B containing multiple 1,2-cis glycosidic linkages
    作者:Archana R. Parameswar、Papapida Pornsuriyasak、Nicole A. Lubanowski、Alexei V. Demchenko
    DOI:10.1016/j.tet.2007.07.036
    日期:2007.10
    The synthesis of the repeating units of pneumococcal polysaccharide serotypes 6A and 6B and derivatives thereof is described. Application of S-benzoxazolyl and S-thiazolinyl glycosides allowed rapid oligosaccharide assembly and provided complete stereoselectivity in challenging 1,2-cis glucosylations and galactosylations. The oligosaccharide assembly was accomplished in an efficient manner by selective activation of thioimidoyl leaving groups over thioglycosides. (c) 2007 Elsevier Ltd. All rights reserved.
  • Iodonium ion-assisted synthesis of a haptenic tetrasaccharide fragment corresponding to the inner cell-wall glycopeptidolipid of Mycobacterium avium serotype 4
    作者:Helene M. Zuurmond、Gerrit H. Veeneman、Gijs A. van der Marel、Jacques H. van Boom
    DOI:10.1016/0008-6215(93)80102-k
    日期:1993.3
    Condensation of ethyl 2,4-di-O-benzoyl-1-thio-alpha-L-rhamnopyranoside with ethyl 3-O-benzyl-4-O-chloroacetyl-2-O-methyl-1-thio-beta-L-fucopyranoside in the presence of iodonium di-sym-collidine perchlorate afforded exclusively ethyl 2,4-di-O-benzoyl-3-O-(3-O-benzyl-4-O-chloroacetyl-2-O-methyl-alpha-L-fucopyranosyl)-1-thio-alpha-L-rhamnopyranoside. This disaccharide derivative was extended at C-1 with 3-benzyloxycarbonylaminopropyl 6-deoxy-3,4-O-isopropylidene-alpha-L-talopyranoside, using N-iodosuccinimide and triflic acid as the catalyst, to furnish 3-benzyloxycarbonylaminopropyl 6-deoxy-2-O[2,4-di-O-benzoyl-3-O-(3-O-benzyl-4-O-chloroacetyl-2-O-methyl-alpha-L-fucopyranosyl)-alpha-L-rhamnopyranosyl]-3,4-0-isopropylidene-alpha-L-talopyranoside (20). Selective removal of the chloroacetyl group from 20, followed by condensation with ethyl 2,3-di-O-benzoyl-4-O-methyl-1-thio-alpha-L-rhamnopyranoside in the presence of the same thiophilic promoter, yielded a fully protected tetrasaccharide derivative. Deprotection of the latter gave the target compound 3-aminopropyl 6-deoxy-2-O-3-O-[2-O-methyl-(4-O-methyl-alpha-L-rhamnopyranosyl)-alpha-L-fucopyranosyl]-alpha-L-rhamnopyranosyl}alpha-L-talopyranoside (1).
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