3,4,5,7-tetra-O-benzyl-1-deoxy-α-D-galacto-hept-2-ulopyranose | 352020-72-5

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 3,4,5,7-tetra-O-benzyl-1-deoxy-α-D-galacto-hept-2-ulopyranose
• 英文别名: 2,3,4,6-tetra-O-benzyl-1C-methyl-α-D-galactopyranose；2,3,4,6-tetra-O-benzyl-1-methyl-α-D-galactopyranose；3,4,5,7-Tetra-O-benzyl-1-deoxy-alpha-D-galacto-hept-2-ulopyranose；(2S,3R,4S,5S,6R)-2-methyl-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-ol
• CAS: 352020-72-5
• 化学式: C₃₅H₃₈O₆
• 分子量: 554.683
• InChiKey: SYOICKCXPGKAOU-NVCPMKERSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.2
• 重原子数：
  41
• 可旋转键数：
  13
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.31
• 拓扑面积：
  66.4
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  3,4,5,7-tetra-O-benzyl-1-deoxy-α-D-galacto-hept-2-ulopyranose 在 palladium dihydroxide 吡啶 、 三氟甲磺酸三甲基硅酯 、 4 A molecular sieve 、 氢气 、 四氯化锡 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 1.0h， 生成 methyl O-(1'-C-methyl-2',3',4',6'-tetra-O-acetyl-α-D-galactopyranosyl)-(1'->6)-2,3,4-tri-O-acetyl-α-D-glucoside
  参考文献：
  名称：

  A facile synthesis of 1′-C-alkyl-α-disaccharides from 1-C-alkyl-hexopyranoses and methyl 1-C-methyl-hexopyranosides

  摘要：

  Direct O-glycosidations using the 1-C-alkyl-2,3,4,6-tetra-O-benzyl-hexopyranoses as the glycosyl donors were carried out with a catalytic amount (0.2 equiv.) of trimethylsilyl trifluoromethanesulfonate (TMSOTf). The glycosidations proceeded alpha -stereoselectively and furnished the corresponding 1'-C-alkyl-alpha -disaccharides in 71-90% yields. The O-transglycosidations from the benzylated and acetylated methyl I-C-methyl-or-hexopyranosides to the corresponding 1'-C-methyl-alpha -O-disaccharides were also examined, respectively. These transglycosidations took place on alpha -stereoselectivity and provided the 1'-C-methyl-alpha -O-disaccharides as the sole products, implying that no neighboring group participation occured in the reactions. (C) 2001 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4020(01)00321-0
• 作为产物：
  描述：

  甲基氯化镁 、 2,3,4,6-四-O-(苯基甲基)-D-半乳糖酸 D-内酯 以 四氢呋喃 为溶剂， 反应 2.0h， 以91%的产率得到3,4,5,7-tetra-O-benzyl-1-deoxy-α-D-galacto-hept-2-ulopyranose
  参考文献：
  名称：

  立体化学在外糖的合成和反应中。

  摘要：

  探索了两种一般方法来立体选择性合成外糖。一种方法利用亲核加成葡萄糖，半乳糖和甘露糖型的完全保护的糖内酯，随后进行脱水，以得到具有（Z）构型的期望的外糖。另一种方法以立体选择性方式进行C-糖苷的硒化。随后的亚硒酸盐消除也提供了（Z）-外糖。制备的葡萄糖型或甘露型的外糖共轭酯与烯丙醇反应，仅得到α-异头物。

  DOI：

  10.1021/jo0255227

文献信息

• [EN] DETECTION OF MYCOBACTERIA<br/>[FR] DÉTECTION DE MYCOBACTÉRIES
  申请人：ISIS INNOVATION

  公开号：WO2011030160A1

  公开（公告）日：2011-03-17

  A method for determining the presence of mycobacteria species in an organism or biological sample, the method comprising adding to the organism or biological sample a probe molecule comprising a substrate and a label, which probe molecule can be incorporated into mycobacteria, the presence of mycobacteria being determined by a detector responsive to the presence of the label, optionally after applying a stimulus; suitable probe molecules include compounds comprising a label and a substrate, which label is can be detected by a detector responsive to the presence of the label, optionally after applying a stimulus, characterised by compound being able to engage with the active site of Antigen 85B (Ag85B) such that it can form simultaneous hydrogen bonds with two or more amino acids in the active site selected from Arg 43, Trp 264, Ser126, His 262 and Leu 42, or the corresponding amino acids in Antigen 85A (Ag85A) or Antigen 85C (Ag85C), at least one of which is with Ser126.

  一种用于确定生物体或生物样本中结核分枝杆菌种类存在的方法，该方法包括向生物体或生物样本中添加一种探针分子，该探针分子包括底物和标记，该探针分子可以被结核分枝杆菌所吸收，通过对标记的存在做出反应的探测器确定结核分枝杆菌的存在，可选地，在施加刺激后进行；适用的探针分子包括包含标记和底物的化合物，该标记可以被对标记的存在做出反应的探测器检测到，可选地，在施加刺激后进行，其特征在于该化合物能够与抗原85B（Ag85B）的活性位点结合，从而能够与所选活性位点中的两个或更多氨基酸同时形成氢键，所选活性位点包括Arg 43、Trp 264、Ser126、His 262和Leu 42，或者抗原85A（Ag85A）或抗原85C（Ag85C）中对应的氨基酸，其中至少一个与Ser126形成氢键。
• Stable C-Glycoside Sugar and C-Glycoconjugate Mimetics, Method for preparing same and uses Thereof in Particular in Cosmetics and Drugs
  申请人：Castelot-Deliencourt-Godefroy Géraldine

  公开号：US20090318678A1

  公开（公告）日：2009-12-24

  The invention concerns a C-glycoside compound of formula (I); wherein: n is equal to 1 or 2; Y represents H or halogen; X is an alkyl chain bearing at least one amino, amide, acid, ester, carbonyl, alcohol, aryl function or a carbonyl, ester amide, amino, alcohol group; the R's, identical or different, represent a OH or OR′ group where R′ is an alkyl, benzyl, benzoyl, acetyl, pivaloyl, trialkylsilyl, tertiobutyldiphenylsilyl group or one or more sugars; R1 represents OR′, NR″R″′, N3, or a phthalamide with R″ and R″′, identical or different, represent H or an alkyl, aryl, benzyl, benzoyl, acetyl, alkoxycarbonyl, allyloxycarbonyl, benzyloxycarbonyl group; R2 represents H or halogen or a OH, OR, NR″R″′ or N3 group, as well as derivatives thereof in physiologically or pharmaceutically acceptable base, mineral or organic acid-addition salt, hydrate or solvate form. The invention is useful for preparing C-glycoside compounds or C-glycoconjugates applicable in particular in cosmetology, medical imagery, immunology for treating cancer, diabetes, hypertension.

  本发明涉及一种化学式(I)的C-葡萄糖苷化合物；其中：n等于1或2；Y代表H或卤素；X是一个带有至少一个氨基、酰胺、酸、酯、酰基、醇、芳基功能或一个酰基、酯酰胺、氨基、醇基的烷基链；R，相同或不同，代表OH或OR′基团，其中R′是一个烷基、苄基、苯甲酰基、乙酰基、偏戊酰基、三烷基硅基、叔丁基二苯基硅基团或一个或多个糖；R1代表OR′、NR″R″′、N3或具有R″和R″′相同或不同的邻苯二甲酰胺，其中R″和R″′代表H或一个烷基、芳基、苄基、苯甲酰基、乙氧羰基、烯丙氧羰基、苄氧羰基团；R2代表H或卤素或一个OH、OR、NR″R″′或N3基团，以及其在生理学或药学上可接受的碱、矿物酸或有机酸盐、水合物或溶剂化合物形式的衍生物。本发明用于制备C-葡萄糖苷化合物或C-葡糖结合物，特别适用于化妆品学、医学影像学、免疫学以治疗癌症、糖尿病、高血压。
• Development of Ketoside-Type Analogues of Trehalose by Using α-Stereoselective O-Glycosidation of Ketose
  作者：Rie Namme、Takashi Mitsugi、Hideyo Takahashi、Shiro Ikegami

  DOI：10.1002/ejoc.200700145

  日期：2007.8

  The stereoselective synthesis of ketoside-type analogues of trehalose is described. O-Glycosidation of hept-2-ulopyranose with trimethylsilyl α-pyranoside promoted by trimethylsilyl trifluoromethanesulfonate afforded α-ketopyranosyl α-aldopyranosides exclusively. α-Ketopyranosyl β-aldooyranosides and α-ketopyranosyl α-ketopyranosides were also synthesized in a similar manner. The benzyl protecting

  描述了海藻糖酮苷类类似物的立体选择性合成。在三氟甲磺酸三甲基甲硅烷基酯的促进下，hept-2-ulopyranose 与三甲基甲硅烷基 α-吡喃糖苷的 O-糖苷化仅提供 α-吡喃酮基 α-吡喃醛糖苷。α-吡喃酮基β-醛糖苷和α-吡喃酮基α-吡喃酮苷也以类似的方式合成。通过氢解去除羟基部分的苄基保护基团，得到完全脱保护的海藻糖类似物。 (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
• ESI-MS Assay of M. tuberculosis Cell Wall Antigen 85 Enzymes Permits Substrate Profiling and Design of a Mechanism-Based Inhibitor
  作者：Conor S. Barry、Keriann M. Backus、Clifton E. Barry、Benjamin G. Davis

  DOI：10.1021/ja204249p

  日期：2011.8.31

  Mycobacterium tuberculosis Antigen 85 enzymes are vital to the integrity of the highly impermeable cell envelope and are potential therapeutic targets. Kinetic analysis using a label-free assay revealed both mechanistic details and a substrate profile that allowed the design and construction of a selective in vitro mechanism-based inhibitor.
• Stereochemistry in the Synthesis and Reaction of <i>e</i><i>xo</i>-Glycals
  作者：Wen-Bin Yang、Yu-Ying Yang、Yu-Feng Gu、Shwu-Huey Wang、Che-Chien Chang、Chun-Hung Lin

  DOI：10.1021/jo0255227

  日期：2002.5.1

  Two general methods are explored for the stereoselective synthesis of exo-glycals. One method utilizes a nucleophilic addition of fully protected sugar lactones of gluco-, galacto-, and manno-types, followed by the subsequent dehydration, to give the desired exo-glycals with (Z)-configuration. The other method proceeds with selenylation of C-glycosides in a stereoselective manner. The subsequent selenoxide

  探索了两种一般方法来立体选择性合成外糖。一种方法利用亲核加成葡萄糖，半乳糖和甘露糖型的完全保护的糖内酯，随后进行脱水，以得到具有（Z）构型的期望的外糖。另一种方法以立体选择性方式进行C-糖苷的硒化。随后的亚硒酸盐消除也提供了（Z）-外糖。制备的葡萄糖型或甘露型的外糖共轭酯与烯丙醇反应，仅得到α-异头物。