2,3-O-isopropylidene-3-C-methyl-L-erythrpfuranose | 1185881-72-4

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,3-O-isopropylidene-3-C-methyl-L-erythrpfuranose
• 英文别名: (3aS,6aS)-2,2,3a-trimethyl-6,6a-dihydro-4H-furo[3,4-d][1,3]dioxol-6-ol
• CAS: 1185881-72-4
• 化学式: C₈H₁₄O₄
• 分子量: 174.197
• InChiKey: XAOVTHGWIIKXOJ-UHFKNVDDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.2
• 重原子数：
  12
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  47.9
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  2,3-O-isopropylidene-3-C-methyl-L-erythrpfuranose 在 重铬酸吡啶 、 三氟乙酸吡啶 作用下， 以 二氯甲烷 为溶剂， 以72%的产率得到2,3-O-isopropylidene-3-C-methyl-L-erythrono-1,4-lactone
  参考文献：
  名称：

  A Concise Route to Branched Erythrono-γ-lactones. Synthesis of the Leaf-Closing Substance Potassium (±)-(2R,3R)-2,3,4-Trihydroxy-2-methylbutanoate

  摘要：

  A series of 1,2-dioxanes 3 were ring-opened with Co-(SALEN)(2) to furnish lactol regioisomers 4 and 5 (86-99% yield). The lactols were oxidized to gamma-lactones 8 and 9 (72-96% yield) and deprotected to afford the 2-C- and 3-C-alkyl and aryl branched erythrono-gamma-lactones 1, 6, and 7 (65-94% yield), including the natural plant lactone (+/-)-2C-D-methylerythrono-1,4-lactone 1. The latter compound was treated with aqueous potassium hydroxide to afford potassium (+/-)-(2R,3R)-2,3,4-trihydroxy-2-methylbutanoate 2, which is a leaf-closing substance of Leucaena leucocephalam.

  DOI：

  10.1021/jo900392y
• 作为产物：
  描述：

  (1R)-1-[(4R,5S)-5-(hydroxymethyl)-2,2,5-trimethyl-1,3-dioxolan-4-yl]ethane-1,2-diol 在 sodium periodate 作用下， 以 甲醇 、 水 为溶剂， 反应 0.75h， 以100%的产率得到2,3-O-isopropylidene-3-C-methyl-L-erythrpfuranose
  参考文献：
  名称：

  Doubly carbon-branched pentoses: synthesis of both enantiomers of 2,4-di-C-methyl arabinose and 2-deoxy-2,4-di-C-methyl arabinose using only acetonide protection

  摘要：

  An acetonide is the only protecting group used in the synthesis of both the enantiomers of 2,4-di-C-methyl arabinose and 2-deoxy-2,4-di-C-methyl arabinose via the enantiomeric 3-C-methyl-L-erythronolactone [from 2-C-methyl-D-ribono-lactone or D-ribose] and 3-C-methyl-D-erythronolactone [from D-tagatose Or L-ribose]. NMR studies on unprotected C-methyl arabinoses show that methyl branching significantly affects the ratios of pyranose and furanose forms present in aqueous Solution. (C) 2009 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2009.06.098

文献信息

• Synthesis of the Methyl Ester of Tritium-labeled AK-toxin I, a Host-specific Toxin Produced by<i>Alternaria alternata</i>Japanese Pear Pathotype
  作者：Masakazu OKADA、Hisashi MIYAGAWA、Tamio UENO

  DOI：10.1271/bbb.63.1253

  日期：1999.1

  AK-toxin I, a host-specific toxin to Japanese pear (Pyrus serotina), was synthesized as its methyl ester from three precursor fragments: conjugated diene-carboxylic acid, chiral epoxyalcohol and β-methylphenylalanine. The epoxyalcohol fragment was derived from D-fructose, in which effective homologation of the hemiacetal carbon to alkyne by using dimethyl 1-diazo-2-oxopropylphosphonate was the key

  AK-毒素I是日本梨（Pyrus serotina）的一种宿主特异性毒素，是由其三个前体片段（共轭二烯-羧酸，手性环氧醇和β-甲基苯基丙氨酸）合成的甲酯形式的。环氧醇片段衍生自D-果糖，其中通过使用1-重氮-2-氧代丙基膦酸二甲酯使半缩醛碳有效同化为炔烃是关键反应。通过重复的Wittig反应制备二烯-羧酸片段，并通过Stille反应将其与环氧醇片段结合。用立体化学纯的β-甲基苯基丙氨酸片段酯化合并的产物，得到目标化合物。该方法用于制备tri标记的AK毒素I的甲酯，其比放射性为213 GBq / mmol。
• Doubly carbon-branched pentoses: synthesis of both enantiomers of 2,4-di-C-methyl arabinose and 2-deoxy-2,4-di-C-methyl arabinose using only acetonide protection
  作者：K. Victoria Booth、Sarah F. Jenkinson、Daniel Best、Fernando Fernández Nieto、Ramón J. Estévez、Mark R. Wormald、Alexander C. Weymouth-Wilson、George W.J. Fleet

  DOI：10.1016/j.tetlet.2009.06.098

  日期：2009.9

  An acetonide is the only protecting group used in the synthesis of both the enantiomers of 2,4-di-C-methyl arabinose and 2-deoxy-2,4-di-C-methyl arabinose via the enantiomeric 3-C-methyl-L-erythronolactone [from 2-C-methyl-D-ribono-lactone or D-ribose] and 3-C-methyl-D-erythronolactone [from D-tagatose Or L-ribose]. NMR studies on unprotected C-methyl arabinoses show that methyl branching significantly affects the ratios of pyranose and furanose forms present in aqueous Solution. (C) 2009 Elsevier Ltd. All rights reserved.
• A Concise Route to Branched Erythrono-γ-lactones. Synthesis of the Leaf-Closing Substance Potassium (±)-(2<i>R</i>,3<i>R</i>)-2,3,4-Trihydroxy-2-methylbutanoate
  作者：Daniel Sejer Pedersen、Tony V. Robinson、Dennis K. Taylor、Edward R. T. Tiekink

  DOI：10.1021/jo900392y

  日期：2009.6.5

  A series of 1,2-dioxanes 3 were ring-opened with Co-(SALEN)(2) to furnish lactol regioisomers 4 and 5 (86-99% yield). The lactols were oxidized to gamma-lactones 8 and 9 (72-96% yield) and deprotected to afford the 2-C- and 3-C-alkyl and aryl branched erythrono-gamma-lactones 1, 6, and 7 (65-94% yield), including the natural plant lactone (+/-)-2C-D-methylerythrono-1,4-lactone 1. The latter compound was treated with aqueous potassium hydroxide to afford potassium (+/-)-(2R,3R)-2,3,4-trihydroxy-2-methylbutanoate 2, which is a leaf-closing substance of Leucaena leucocephalam.