6-deoxy-1,2:3,4-di-O-isopropylidene-6-(triphenylphosphino)-α-D-galactopyranose iodide | 69204-28-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 6-deoxy-1,2:3,4-di-O-isopropylidene-6-(triphenylphosphino)-α-D-galactopyranose iodide
• 英文别名: 6-Deoxy-6-C-(triphenylmethylenephosphoniumiodide)-1,2:3,4-DI-O-isopropylidene-alpha-D-galactopyranose；triphenyl-[[(1S,2R,6R,8S,9R)-4,4,11,11-tetramethyl-3,5,7,10,12-pentaoxatricyclo[7.3.0.02,6]dodecan-8-yl]methyl]phosphanium;iodide
• CAS: 69204-28-0
• 化学式: C₃₀H₃₄O₅P*I
• 分子量: 632.475
• InChiKey: HHBBXLSXXSWXJH-ZBWYYJKYSA-M

计算性质

• 辛醇/水分配系数(LogP)：
  1.38
• 重原子数：
  37
• 可旋转键数：
  5
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.4
• 拓扑面积：
  46.2
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  6-deoxy-1,2:3,4-di-O-isopropylidene-6-(triphenylphosphino)-α-D-galactopyranose iodide 在 palladium dihydroxide 吡啶 、 正丁基锂 、 氢气 作用下， 以 四氢呋喃 、 甲醇 、 六甲基磷酰三胺 、 正己烷 、 乙酸乙酯 为溶剂， 反应 25.08h， 生成 9,10,11-tri-O-acetyl-8,12-anhydro-6,7,13-trideoxy-1,2:3,4-di-O-isopropylidene-α-L-glycero-D-manno-D-galacto-trideco-1,5-pyranose
  参考文献：
  名称：

  立体选择性合成α-和β-1- C-岩藻糖基醛及其在具有生物意义的C-岩藻糖苷组装中的用途

  摘要：

  的有效合成ö经由噻唑除了三-benzylated标题糖醛衍生物ö苄基升-fuconolactone接着将得到的thiazolylketose和噻唑甲酰基到变换进行说明的高立体选择性的脱氧。维蒂希这些醛与半乳糖和D-吡喃葡萄糖6-膦和减少的烯化所得的烯烃，得到α-和β连接的（1→6） -升- Ç -fucosyl二糖，即，β-升- Ç -Fuc-（1 →6）-α- d -Gal，α-升- ç -Fuc-（1→6）-α- d -Gal，和α-升-C -Fuc-（1→6）-α- d- Glc。将上述C-岩藻糖基醛的α-端基异构体转化为C-岩藻糖基甲基三苯基碘化碘，用BuLi处理后，从中生成相应的C-岩藻糖基亚甲基phosphor烷。此正膦与加纳醛反应（Ñ -Boc d -serinal丙酮化合物）和它的一碳同系物更高，得到烯烃从得到恶唑烷环，其减少和揭晓了甘氨组Ç -fucosylα氨基酸，即α-升-连接ç

  DOI：

  10.1021/jo049406a
• 作为产物：
  描述：

  6-脱氧-6-碘-1,2:3,4-二-o-异亚丙基-α-d-半乳糖吡喃糖苷 、 三苯基膦 以 甲苯 为溶剂， 反应 20.0h， 以89%的产率得到6-deoxy-1,2:3,4-di-O-isopropylidene-6-(triphenylphosphino)-α-D-galactopyranose iodide
  参考文献：
  名称：

  Simple approach to O-protected deaminotunicaminyluracil

  摘要：

  A five-step synthesis of deaminotunieaminyluracil is presented. Coupling of the ylide, generated from the phosphonium salt 4, with the aldehyde 5 afforded the undecose 6 in high yield. The key step in this synthesis was the hydroboration-oxidation reaction of the olefin 6. For this purpose several hydroborating reagents were examined. The diborane-THF reagent led to the desired deaminotunicamine derivative 8, as the predominant product. Condensation of undecose 8c with 1,3-di-O-trimethylsilyluracil gave the title compound.

  DOI：

  10.1016/s0040-4020(01)87008-3

文献信息

• Selectivity in the SmI2-induced deoxygenation of thiazolylketoses for formyl C-glycoside synthesis and revised structure of C-ribofuranosides
  作者：Alessandro Dondoni、Paolo Formaglio、Alberto Marra、Alessandro Massi

  DOI：10.1016/s0040-4020(01)00736-0

  日期：2001.9

  Deoxygenation of thiazolylketose acetates using SmI2–(CH2OH)2 or TMSOTf–Et3SiH affords thiazolyl C-glycosides with opposite α/β ratios. Examination of the thiazolyl α- and β-C-ribofuranoside pair by NOE experiments reveals that the earlier configuration assigned to one of these isomers has to be revised. Having prepared authentic anomeric α- and β-ribofuranose aldehydes from the corresponding thiazolyl

  使用SmI 2-（CH 2 OH）2或TMSOTf-Et 3 SiH对乙酸噻唑基酮糖乙酸进行脱氧，得到具有相反α/β比的噻唑基C-糖苷。通过NOE实验对噻唑基α-和β- C-核呋喃糖苷对的研究表明，必须修改分配给这些异构体之一的早期构型。已经制备正品异头α-和β-D-呋喃核糖醛从相应的噻唑基C ^由噻唑环的裂解-glycosides，各醛转化到（1→6） - c ^通过Wittig烯化-disaccharides与半乳糖6-正膦。
• Synthesis of C-disaccharides from C-formyl glycosides
  作者：Alessandro Dondoni、Alessia Boscarato、Helene Zuurmond

  DOI：10.1016/0040-4039(96)01667-x

  日期：1996.10

  ranoside (1) and 2,3,4,6-tetra-O-benzyl-d-galactopyranoside (2) with the protected galactose 6-phosphorane 3 leads to the corresponding olefins which upon hydrogenolysis give β (1 →6′)-linked C-disaccharides 6 and 8 in 56 and 72% yield, respectively.

  C-甲酰基2,3：5,6-二-O-异亚丙基-d-呋喃呋喃糖苷（1）与2,3,4,6-四-O-苄基-d-吡喃半乳糖苷（2）之间的偶联半乳糖6-磷烷3生成相应的烯烃，这些烯烃在氢解后分别以56％和72％的收率得到β（1→6'）连接的C-二糖6和8。
• New Synthesis of Pyrrolidine Homoazasugars via Aminohomologation of Furanoses and Their Use for the Stereoselective Synthesis of Aza-<i>C</i>-disaccharides
  作者：Alessandro Dondoni、Pier Paolo Giovannini、Daniela Perrone

  DOI：10.1021/jo020252d

  日期：2002.10.1

  in 17% overall yields (six steps). The formyl aza-C-glycosides proved to be valuable intermediates for the synthesis of more complex derivatives. In fact, these sugar aldehydes were employed in Wittig-type coupling reactions with galactose and ribose phosphoranes to give bis-glycosylated alkenes, which upon reduction of the double bond were transformed into methylene isosteres of (1-->6)- and (1-->5)-linked

  通过2-N-硫代噻唑立体选择性加成到N-上，在2,3,5-三-O-苄基呋喃糖酶的异头异构体中心引入甲酰基并用碱性氮原子取代环氧（氨基同位）苄基，N-呋喃糖基羟胺（被掩盖的N-苄基糖硝酮），然后对所得的开链加合物进行还原性脱羟基反应，然后通过氨基上的游离羟基分子内置换并从甲酰基上除去甲酰基来进行闭环噻唑环。通过将甲酰基还原为羟甲基并通过氢解除去O-和N-苄基，将所得甲酰基氮杂-C-糖苷转化为2,5-二脱氧-2,5-亚氨基己糖醇（吡咯烷高氮杂）。 。将此反应序列应用于四种呋喃糖酶（D-阿拉伯糖，D-核糖，D-lyxo，L-xylo），以17％的总收率（六个步骤）得到无羟基和氨基的纯天竺葵，包括天然产物2,5-二脱氧-2,5-亚氨基-D-甘露醇。甲酰基氮杂-C-糖苷被证明是合成更复杂衍生物的有价值的中间体。实际上，这些糖醛与半乳糖和核糖磷烷一起用于Wittig型偶联反应中，生成双糖基化的烯烃，双键还原后转化为（1->
• Glycoside-Clustering Round Calixarenes toward the Development of Multivalent Carbohydrate Ligands. Synthesis and Conformational Analysis of Calix[4]arene <i>O</i>- and <i>C</i>-Glycoconjugates
  作者：Alessandro Dondoni、Martin Kleban、Xubo Hu、Alberto Marra、Harold D. Banks

  DOI：10.1021/jo020178z

  日期：2002.7.1

  and C-glycosyl calixarenes (calixsugars) have been prepared by tethering carbohydrate moieties to a tetrapropoxycalix[4]arene scaffold through alkyl chains. Two methodologies have been employed. One consisted of the stereoselective multiple glycosylation of upper rim calix[4]arene polyols leading to calix-O-glycosides; the other involved a multiple Wittig olefination of upper rim calix[4]arene-derived

  通过将碳水化合物部分通过烷基链束缚到四丙氧基杯[4]芳烃骨架上，制备了双-和四-O-和C-糖基杯芳烃（杯糖）。已经采用了两种方法。一种是由上边缘杯[4]芳烃多元醇的立体选择性多重糖基化反应而形成杯-O-糖苷。另一种涉及通过使用糖磷烷将上边缘杯[4]芳烃衍生的多醛进行多次维蒂希烯烃化反应，并还原烯烃双键，得到杯-C-糖苷。双糖基化产物的NMR光谱和NOE实验表明，带有糖保护残基的化合物优先以扁平圆锥排列形式（远构象）存在于溶液中，而脱保护的衍生物则采用紧密构象。
• Synthesis of α- and β-<scp>d</scp>-(1→6)-<i>C</i>-Disaccharides by Wittig Olefination of Formyl <i>C</i>-Glycosides with Glycopyranose 6-Phosphoranes
  作者：Alessandro Dondoni、Helene M. Zuurmond、Alessia Boscarato

  DOI：10.1021/jo971177n

  日期：1997.11.1

  The synthesis of (1-->6)-C-disaccharides by Wittig condensation of formyl C-glycofuranosides and pyranosides with galacto-and glucopyranose B-phosphoranes is described herein. The method involves the coupling of the sugar aldehydes with the ylides and the reduction of the double bond of the resulting sugar alkenes, in most of the cases by catalytic hydrogenation. The reduction with nickel boride or diimide is employed in some special cases. O-Benzyl protective groups are removed by catalytic hydrogenation either in the course of the reduction of the double bond or in a subsequent step, while O-isopropylidene groups are cleaved by treatment with Amberlite IR-120. In this way, eight free beta-D-(1-->6)-C-disaccharides have been prepared in 26-61% overall yield starting from B-linked formyl C-glycosides. These include C-linked analogues of the biologically active disaccharides allolactose (Gal beta 1,6Glc), gentiobiose (Glc beta 1,6Glc), and N-acetylamino disaccharides (GalNHAc beta,6Gal and GalNHAc beta 1,6Glc). Moreover, the synthesis of two alpha-D-(1-->6)-C-disaccharides is described from formyl C-furanosides. The limiting condition of the synthesis of these stereoisomers is the configurational instability of the alpha-linked formyl C-glycosides under the basic conditions of the Wittig olefination.