3-(tetra-O-benzyl-α-D-galactopyranosyl)-1-propanol | 213675-13-9

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 3-(tetra-O-benzyl-α-D-galactopyranosyl)-1-propanol
• 英文别名: 3-(2,3,4,6-tetra-O-benzyl-α-D-galactopyranosyl)propanol；3-[(2R,3S,4R,5S,6R)-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-yl]propan-1-ol
• CAS: 213675-13-9
• 化学式: C₃₇H₄₂O₆
• 分子量: 582.737
• InChiKey: UKFASVWVOOPNJT-GDWCTEMXSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.6
• 重原子数：
  43
• 可旋转键数：
  16
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.35
• 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-(tetra-O-benzyl-α-D-galactopyranosyl)-1-propanol 在 chromium(VI) oxide 、 三氟甲磺酸三甲基硅酯 、 硫酸 、 三氟化硼乙醚 、 sodium methylate 、 1-羟基苯并三唑 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下， 以 甲醇 、 二氯甲烷 、 丙酮 为溶剂， 反应 22.5h， 生成 [(2R,3R,4S,5R,6R)-3,4,5-triacetyloxy-6-[[(2R,3S,4R,5S,6R)-6-[3-(octylamino)-3-oxopropyl]-3,4,5-tris(phenylmethoxy)oxan-2-yl]methoxy]oxan-2-yl]methyl acetate
  参考文献：
  名称：

  Differential Carbohydrate Recognition of Two GlcNAc-6-sulfotransferases with Possible Roles in L-Selectin Ligand Biosynthesis

  摘要：

  Two human GlcNAc-6-sulfotransferases, CHST2 and HEC-GlcNAc6ST, have been recently identified as possible contributors to the inflammatory response by virtue of their participation in L-selectin ligand biosynthesis. Selective inhibitors would facilitate their functional elucidation and might provide leads for antiinflammatory therapy. Here we investigate the critical elements of a disaccharide substrate that are required for recognition by CHST2 and HEC-GlcNAc6ST. A panel of disaccharide analogues, bearing modifications to the pyranose rings and aglycon substituents, were synthesized and screened for substrate activity with each enzyme. Both GlcNAc-6-sulfotransferases required the 2-N-acetamido and 4-hydroxyl groups of a terminal GlcNAc residue for conversion to product. Both enzymes tolerated modifications to the reducing terminal pyranose. Key differences in recognition of an amide group in the aglycon substituent were observed, providing the basis for future glycomimetic inhibitor design.

  DOI：

  10.1021/ja001224k
• 作为产物：
  描述：

  3-(2',3',4',6'-tetra-O-benzyl-α-D-galactopyranosyl)prop-1-ene 在 9-borabicyclo[3.3.1]nonane dimer 、 sodium hydroxide 、 双氧水 作用下， 以 四氢呋喃 、 乙醇 为溶剂， 反应 17.0h， 以87%的产率得到3-(tetra-O-benzyl-α-D-galactopyranosyl)-1-propanol
  参考文献：
  名称：

  一类新型糖肽杂交体的设计和合成：通过立体选择性“乙酸酯”曼尼希反应作为关键战略要素的 C-连接糖基 β-氨基酸

  摘要：

  一种新型的糖-氨基酸杂交体，它由一个糖单元（葡萄糖、半乳糖或吡喃甘露糖）通过 C-糖苷键连接到 α-未取代的 β-氨基酸单元的 β-位，被表达。据推测，这些新化合物或由其衍生的寡聚肽可能具有 β-氨基酸寡聚体的结构特征以及 C-糖苷对水解的化学和酶抗性。该合成策略基于手性乙酸烯醇酯等价物与衍生自相应糖-C-糖苷醛的α-酰胺砜之间的新曼尼希型反应。虽然糖-C-糖苷醛伴侣是通过对已知糖前体的成熟转化制备的，以(1R)-endo-2-乙酰异冰片醇3衍生的烯醇锂为关键元素。这种曼尼希方法进行了基本上完美的非对映控制，导致新的 β-氨基羰基加合物以良好的收率。此外，通过用硝酸铈铵 (CAN) 进行氧化处理，可以顺利进行樟脑助剂的裂解。互补地，β-氨基羰基曼尼希加合物与α-或β-氨基酸残基的直接肽型偶联和随后的CAN促进辅助分离产生带有含糖脂肪族侧链的二肽片段，并且是一个过程可以迭代。还提供了基于实验

  DOI：

  10.1021/ja026250s

文献信息

• Design and Synthesis of a Novel Class of Sugar-Peptide Hybrids:  <i>C</i>-Linked Glyco β-Amino Acids through a Stereoselective “Acetate” Mannich Reaction as the Key Strategic Element
  作者：Claudio Palomo、Mikel Oiarbide、Aitor Landa、M. Concepción González-Rego、Jesús M. García、Alberto González、José M. Odriozola、Manuel Martín-Pastor、Anthony Linden

  DOI：10.1021/ja026250s

  日期：2002.7.1

  on a new Mannich-type reaction between a chiral acetate enolate equivalent and alpha-amido sulfones derived from the corresponding sugar-C-glycoside aldehydes. While the sugar-C-glycoside aldehyde partner is prepared from well-established transformations on known sugar precursors, the lithium enolate derived from (1R)-endo-2-acetylisoborneol 3 is employed as the key element. This Mannich approach proceeds

  一种新型的糖-氨基酸杂交体，它由一个糖单元（葡萄糖、半乳糖或吡喃甘露糖）通过 C-糖苷键连接到 α-未取代的 β-氨基酸单元的 β-位，被表达。据推测，这些新化合物或由其衍生的寡聚肽可能具有 β-氨基酸寡聚体的结构特征以及 C-糖苷对水解的化学和酶抗性。该合成策略基于手性乙酸烯醇酯等价物与衍生自相应糖-C-糖苷醛的α-酰胺砜之间的新曼尼希型反应。虽然糖-C-糖苷醛伴侣是通过对已知糖前体的成熟转化制备的，以(1R)-endo-2-乙酰异冰片醇3衍生的烯醇锂为关键元素。这种曼尼希方法进行了基本上完美的非对映控制，导致新的 β-氨基羰基加合物以良好的收率。此外，通过用硝酸铈铵 (CAN) 进行氧化处理，可以顺利进行樟脑助剂的裂解。互补地，β-氨基羰基曼尼希加合物与α-或β-氨基酸残基的直接肽型偶联和随后的CAN促进辅助分离产生带有含糖脂肪族侧链的二肽片段，并且是一个过程可以迭代。还提供了基于实验
• Remote asymmetric induction: Synthesis of C -linked α-galactoserine and homoserine derivatives by electrophilic amination
  作者：Prabhat Arya、Robert N. Ben、Huiping Qin

  DOI：10.1016/s0040-4039(98)01295-7

  日期：1998.8

  diastereoselectivity (98%) for electrophilic amination of compound 9 using di-t-butyl azodicarboxyl ester as an electrophile was achieved. A similar reaction with compound 13 having achiral oxazolidinone was studied to examine 1,4-remote asymmetric induction. In the latter, a selectivity of 6.5:1 demonstrated the effect of α-galactosyl moiety, responsible for inducing the induction from the remote site.

  高非对映选择性（98％）为化合物的亲电胺化9使用二吨丁基azodicarboxyl酯作为亲电子达到了。研究了与具有非手性恶唑烷酮的化合物13的类似反应，以研究1，4-远程不对称诱导。在后者中，选择性为6.5：1证明了α-半乳糖基部分的作用，负责诱导来自偏远位置的诱导。
• Facile Preparation of an Orthogonally Protected, pH-Sensitive, Bioconjugate Linker for Therapeutic Applications
  作者：Steven Fletcher、Michael R. Jorgensen、Andrew D. Miller

  DOI：10.1021/ol0483347

  日期：2004.11.1

  We describe the facile, three-step synthesis of an orthogonally protected, pH-sensitive linker (8), based on maleic acid, and report its application to the preparation of a pH-sensitive phospholipid (20) for potential use in drug and gene delivery. In addition, we highlight the benefits of our linker over the use of the commercially available cis-aconitic anhydride (4).
• Functionalization of OEP-Based Benzochlorins To Develop Carbohydrate-Conjugated Photosensitizers. Attempt To Target β-Galactoside-Recognized Proteins
  作者：Guolin Li、Suresh K. Pandey、Andrew Graham、Mahabeer P. Dobhal、Ricky Mehta、Yihui Chen、Amy Gryshuk、Kate Rittenhouse-Olson、Allan Oseroff、Ravindra K. Pandey

  DOI：10.1021/jo030280b

  日期：2004.1.1

  meso-(2-Formylvinyl)octaethylporphyrin on reaction with cyanotrimethylsilane in the presence of various catalysts copper triflate [Cu(OTf)(2)], indium triflate [In(OTf)(3)], or magnesium bromide diethyl etherate (MgBr2.Et2O)} produced a mixture of the intermediate 3-hydroxy-3-cyanopropenoporphyrin, the corresponding trimethylsilyl ether derivative, and the unexpected propenochlorins. The yields of the reaction products were found to depend on the reaction conditions and the catalysts used. The intermediate porphyrins on treatment with concentrated sulfuric acid yielded the freebase cyanobenzochlorins in major quantity along with several other novel benzochlorins as minor products. Reduction of ethyl-3-hydroxy-1-pentenoate-porphyrin with DIBAL-H/NaBH4 and subsequent acid treatment provided the corresponding free-base 10(3)-(2-hydroxyethyl)benzochlorin, which upon a sequence of reactions gave a free-base benzochlorin bearing a carboxylic acid functionality in good yield. It was then condensed with a variety of carbohydrates (glucosamine, galactosamine, and lactosamine), and the related conjugates were screened using the galectin-binding-ability assay. Among the carbohydrate conjugates investigated, the lactose and galactose analogues displayed the galectin-binding ability with an enhancement of about 300-400-fold compared to lactose. In preliminary studies, all photosensitizers (with or without carbohydrate moieties) were found to be active in vitro [radiation-induced fibrosarcoma (RIF) tumor cells]. However, the cells incubated with lactose (known to bind to beta-galactoside-recognized proteins) prior to the addition of the photosensitizers containing the beta-galactose moiety (e.g., galactose and lactose) produced a 100% decrease in their photosensitizing efficacy. Under similar experimental conditions, benzochlorin without a beta-galactoside moiety or the related glucose conjugate did not show any inhibition in its photosensitizing efficacy. These results in combination with the galectin-binding data indicate a possible beta-galactoside-recognized protein specificity of the galactose- and lactosebenzochlorin conjugates.
• Differential Carbohydrate Recognition of Two GlcNAc-6-sulfotransferases with Possible Roles in L-Selectin Ligand Biosynthesis
  作者：Brian N. Cook、Sunil Bhakta、Teresa Biegel、Kendra G. Bowman、Joshua I. Armstrong、Stefan Hemmerich、Carolyn R. Bertozzi

  DOI：10.1021/ja001224k

  日期：2000.9.1

  Two human GlcNAc-6-sulfotransferases, CHST2 and HEC-GlcNAc6ST, have been recently identified as possible contributors to the inflammatory response by virtue of their participation in L-selectin ligand biosynthesis. Selective inhibitors would facilitate their functional elucidation and might provide leads for antiinflammatory therapy. Here we investigate the critical elements of a disaccharide substrate that are required for recognition by CHST2 and HEC-GlcNAc6ST. A panel of disaccharide analogues, bearing modifications to the pyranose rings and aglycon substituents, were synthesized and screened for substrate activity with each enzyme. Both GlcNAc-6-sulfotransferases required the 2-N-acetamido and 4-hydroxyl groups of a terminal GlcNAc residue for conversion to product. Both enzymes tolerated modifications to the reducing terminal pyranose. Key differences in recognition of an amide group in the aglycon substituent were observed, providing the basis for future glycomimetic inhibitor design.