2,4-di-O-acetyl-3,6-di-O-methyl-α-D-glucopyranosyl chloride | 89821-75-0

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,4-di-O-acetyl-3,6-di-O-methyl-α-D-glucopyranosyl chloride
• 英文别名: [(2R,3R,4S,5R,6R)-5-acetyloxy-6-chloro-4-methoxy-2-(methoxymethyl)oxan-3-yl] acetate
• CAS: 89821-75-0
• 化学式: C₁₂H₁₉ClO₇
• 分子量: 310.732
• InChiKey: MMPNFZVKWUKTRW-ZIQFBCGOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.47
• 重原子数：
  20.0
• 可旋转键数：
  5.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.83
• 拓扑面积：
  80.29
• 氢给体数：
  0.0
• 氢受体数：
  7.0

反应信息

• 作为反应物：
  描述：

  2,4-di-O-acetyl-3,6-di-O-methyl-α-D-glucopyranosyl chloride 在 sodium hydroxide 、 氰化汞 作用下， 以 甲醇 、 乙腈 为溶剂， 反应 1.25h， 生成 (2S,3R,4S,5R,6R)-2-((3aS,4S,6R,7R,7aS)-4-Allyloxy-2,2,6-trimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran-7-yloxy)-4-methoxy-6-methoxymethyl-tetrahydro-pyran-3,5-diol
  参考文献：
  名称：

  丙基4-O-（3,6-二-O-甲基-β-d-吡喃吡喃糖基）-2,3-二-O-甲基-α-d-鼠李糖吡喃糖苷的合成

  摘要：

  摘要2,3：4,6-二-O-异亚丙基-α-d-甘露吡喃糖苷烯丙基的部分水解得到烯丙基2,3-O-异亚丙基-α-d-甘露吡喃糖苷，其转化为烯丙基2,3-O-通过用氢化锂铝还原6-O-甲苯磺酰基衍生物，得到异亚丙基-α-d-鼠李吡喃糖苷。汞存在下，2,3-O-异亚丙基-α-d-鼠李吡喃糖苷烯丙基与2,4-二-O-乙酰基-3,6-二-O-甲基-α-d-吡喃葡萄糖酰氯的缩合反应（II）氰化物得到结晶的β-连接的二糖，将其转化为标题化合物。

  DOI：

  10.1016/s0008-6215(00)90758-4

文献信息

• The allyl group for protection in carbohydrate chemistry. Part 19. The coupling of allyl 2,3-di-O-methyl-4-O-(3,6-di-O-methyl-β-<scp>D</scp>-glucopyranosyl)-α-<scp>L</scp>-rhamnopyranoside to bovine serum albumin. Preparation of a diagnostic reagent for antibodies to the major glycolipid of Mycobacterium leprae(the leprosy bacillus) in human sera
  作者：Jill Gigg、Roy Gigg、Sheila Payne、Robert Conant

  DOI：10.1039/p19870001165

  日期：——

  compound, via allyl 2,3-di-O-methyl-4-O-(3,6-di-O-methyl-β-D-glucopyranosyl)-α-L-rhamnopyranoside, were also developed. The formylmethyl glycoside was coupled to bovine serum albumin using ‘reductive amination’ in the presence of sodium cyanoborohydride to give a glycoconjugate useful for the serodiagnosis of antibodies to the major glycolipid of Mycobacterium leprae in the sera of leprosy patients. 5′

  烯丙基4 - O-（2,4-二-O-苄基-3,6-二-O-甲基-β - D-吡喃吡喃糖基）-2,3-二-O-甲基-α - L-鼠李糖吡喃糖苷的环氧化和苄基的环氧化物和氢解，随后碱性水解，得到2'，3'-二羟基丙基2,3-二- ö甲基-4- ö - （3,6-二- ö甲基β- d -葡吡喃糖基）-α- L-鼠李糖吡喃糖苷，其用偏高碘酸钠裂解，得到相应的甲酰基甲基糖苷。其它两个路线后者化合物，经由烯丙基2,3-二- ö甲基-4- Ö - （3,6-二-还开发了O-甲基-β - D-吡喃葡萄糖基）-α - L-鼠李糖吡喃糖苷。在存在氰基硼氢化钠的情况下，使用“还原胺化”将甲酰甲基糖苷偶联至牛血清白蛋白，以得到可用于血清学诊断麻风患者血清中麻风分枝杆菌主要糖脂抗体的糖缀合物。还制备了5'，6'-二羟基己基和10'，11'-二羟基十一烷基3,6-二-O-甲基-β - D-吡喃葡萄糖苷，分别作为合成4
• A modified synthesis and serological evaluation of neoglycoproteins containing the natural disaccharide of PGL-I from Mycobacterium leprae
  作者：Jian Zhang、Delphi Chatterjee、Patrick J. Brennan、John S. Spencer、Avraham Liav

  DOI：10.1016/j.bmcl.2010.04.072

  日期：2010.6

  In order to generate substantial amounts of neoglycoconjugate needed for commercialization of diagnostic kits and high-throughput detection of leprosy, we developed a facile and high-yield synthesis of the corresponding disaccharide. Herein, the non-reducing disaccharide segment of phenolic glycolipid I from Mycobacterium leprae, O-(3,6-di-O-methyl-beta-D-glucopyranosyl)-(1 -> 4)-O-2,3-di-O-methyl-alpha-L-rhamnopyranose was synthesized by an improved procedure. The disaccharide was efficiently conjugated to bovine/human serum albumin, via acyl-azide intermediate, to form natural disaccharide-BSA/HSA neo-glycoproteins that showed a high activity in serodiagnosis of leprosy. The disaccharide incorporated into the proteins was accurately measured by MALDI-TOF mass spectrometry. The serological activities of the neoglycoproteins against pooled human lepromatous leprosy sera were measured by ELISA and they were detectable at picogram amounts. (C) 2010 Elsevier Ltd. All rights reserved.