1,2-O-isopropylidene-3-O-(4-methoxybenzyl)-α-D-xylofuranose | 126394-06-7

• 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: 1,2-O-isopropylidene-3-O-(4-methoxybenzyl)-α-D-xylofuranose
• 英文别名: [(3aR,5R,6S,6aR)-6-[(4-methoxyphenyl)methoxy]-2,2-dimethyl-3a,5,6,6a-tetrahydrofuro[2,3-d][1,3]dioxol-5-yl]methanol
• CAS: 126394-06-7
• 化学式: C₁₆H₂₂O₆
• 分子量: 310.347
• InChiKey: LSKZQSKIZXTXMM-LXTVHRRPSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1
• 重原子数：
  22
• 可旋转键数：
  5
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.62
• 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：

  1,2-O-isopropylidene-3-O-(4-methoxybenzyl)-α-D-xylofuranose 在 pyridinium chlorochromate 作用下， 以 二氯甲烷 为溶剂， 生成 (3aR,5S,6S,6aR)-6-(4-methoxybenzyloxy)-tetrahydro-2,2-dimethylfuro[2,3-d][1,3]dioxole-5-carbaldehyde
  参考文献：
  名称：

  Regioselective deprotection of p-methoxybenzyl ethers of furanose derivatives

  摘要：

  Reaction of per-p-methoxybenzylated hexofuranoses and pentofuranoses with either a catalytic amount of tin chloride dihydrate (SnCl2. 2H(2)O) or 0.5-10% solution of trifluoroacetic acid in dichloromethane afforded regioselectively the corresponding monosaccharide derivatives having a single free hydroxyl group at C(5) in good yields. (C) 1999 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4039(99)00396-2
• 作为产物：
  描述：

  1,2-O-异亚丙基-alpha-D-呋喃木糖 在 sodium hydride 、 三氟乙酸 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 生成 1,2-O-isopropylidene-3-O-(4-methoxybenzyl)-α-D-xylofuranose
  参考文献：
  名称：

  Regioselective deprotection of p-methoxybenzyl ethers of furanose derivatives

  摘要：

  Reaction of per-p-methoxybenzylated hexofuranoses and pentofuranoses with either a catalytic amount of tin chloride dihydrate (SnCl2. 2H(2)O) or 0.5-10% solution of trifluoroacetic acid in dichloromethane afforded regioselectively the corresponding monosaccharide derivatives having a single free hydroxyl group at C(5) in good yields. (C) 1999 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0040-4039(99)00396-2

文献信息

• A mild and selective cleavage of trityl ethers by CBr4–MeOH
  作者：Jhillu S. Yadav、Basi V. Subba Reddy

  DOI：10.1016/s0008-6215(00)00241-x

  日期：2000.12

  Trityl ethers are selectively deprotected to the corresponding alcohols in high yields by CBr4 in refluxing methanol under neutral reaction conditions. Other hydroxyl protecting groups like isopropylidene, allyl, benzyl, acetyl, benzoyl, methyl, tosyl, prenyl, propargyl, tert-butyldiphenylsilyl and p-methoxybenzyl ethers are unaffected.

  在中性反应条件下，在回流的甲醇中，通过CBr4将三苯甲基醚高选择性地脱保护为相应的醇。其他羟基保护基如异亚丙基，烯丙基，苄基，乙酰基，苯甲酰基，甲基，甲苯磺酰基，异戊二烯基，炔丙基，叔丁基二苯基甲硅烷基和对甲氧基苄基醚不受影响。
• Highly stereocontrolled total synthesis of the polyether antibiotic salinomicin. II. Synthesis of right (C18-C30) segments from D-glucose, D-mannitol, and ethyl L-lactate.
  作者：Kiyoshi HORITA、Satoshi NAGATO、Yuji OIKAWA、Osamu YONEMITSU

  DOI：10.1248/cpb.37.1705

  日期：——

  (S)-4[(2R, 5R, 6S)-5-Ethyl-5-hydroxy-6-methyltetrahydropyran-2-yl]pentan-4-olide (5), an alkaline degradation product of salinomycin (1), was synthesized with complete stereoselectivity from D-mannitol and ethyl L-lactate.Compound 5 was then converted to (3R, 4S, 7S)-7-[(2R, 5R, 6S)]-5-ethyl-5-methoxymethoxy-6-methyltetrahydropyran-2-yl]-4, 7-bismethoxymethoxy-3-(tetrahydropyran-2-yloxy)oct-1-yne (3), a C18-C30 segment of 1, via Sharpless asymmetric epoxidation. Another C18-C30 segment, (R)-3-[2RS, 5S]-5-[(2R, 5R, 6S)-5-benzyloxy-5-ethyl-6-methyltetrahydropyran-2-yl]-2-methoxy-5-methyltetrahydrofuran-2-yl]-3-(4-methoxybenzyloxy)prop-1-yne (4), was synthesized more conveniently via coupling between a C19-C22 fragment prepared starting from D-glucose and a C23-C30 fragment prepared starting from D-mannitol and ethyl L-lactate.

  (S)-4[(2R, 5R, 6S)-5-乙基-5-羟基-6-甲基四氢呋喃-2-基]戊酸内酯（5），是沙利霉素（1）的碱性降解产物，能够从D-甘露醇和乙基L-乳酸中以完全立体选择性合成。随后，将化合物5转化为（3R，4S，7S）-7-[(2R，5R，6S)]-5-乙基-5-甲氧基甲氧基-6-甲基四氢呋喃-2-基]-4,7-双甲氧基甲氧基-3-（四氢呋喃-2-氧基）辛-1-炔（3），这是1的C18-C30片段，通过Sharpless不对称环氧化反应获得。另一个C18-C30片段（R）-3-[2RS，5S]-5-[(2R，5R，6S)-5-苄氧基-5-乙基-6-甲基四氢呋喃-2-基]-2-甲氧基-5-甲基四氢呋喃-2-基]-3-(4-甲氧基苄氧基)丙-1-炔（4），则通过将一个自D-葡萄糖出发制备的C19-C22片段与一个自D-甘露醇和乙基L-乳酸出发制备的C23-C30片段结合而更方便地合成。
• Exploitation of in Situ Generated Sugar-Based Olefin Keto-Nitrones: Synthesis of Carbocycles, Heterocycles, and Nucleoside Derivatives
  作者：Soumendra Nath Das、Arpan Chowdhury、Neha Tripathi、Prithwish K. Jana、Sukhendu B Mandal

  DOI：10.1021/jo502672x

  日期：2015.1.16

  Application of intramolecular 1,3-dipolar nitrone cycloaddition reaction on carbohydrate-derived precursors containing an olefin functionality at C-1 or C-3 or C-5 and a nitrone moiety at C-2 or C-3 as appropriate has resulted in the formation of structurally new cycloaddition products containing furanose-fused oxepane, thiepane, azepane, cyclopentane, cycloheptane, tetrahydrofuran, and pyranose-fused

  分子内的1,3-偶极氮酮环加成反应在碳水化合物衍生的前体上的应用，该前体在C-1或C-3或C-5处具有烯烃官能度，并在C-2或C-3处具有硝酮部分，适当地导致了形成结构上新的环加成产物，其中包含呋喃糖稠合的氧杂环丁烷，硫杂环戊烷，ze庚烷，环戊烷，环庚烷，四氢呋喃和吡喃糖稠合的四氢呋喃环。这些产品的结构和立体化学已经通过光谱以及单晶X射线分析进行了表征。应用Vorbrüggen反应条件，其中两种化合物已转化为双环核苷衍生物。
• Stereocontrolled synthesis of 1-oxacepham from 4-vinyloxyazetidin-2-one, a new building block
  作者：Zbigniew Kałż、Robert Łysek

  DOI：10.1016/s0957-4166(97)00310-8

  日期：1997.8
• HORITA, KIYOSHI;NAGATO, SATOSHI;OIKAWA, YUJI;YONEMITSU, OSAMU, CHEM. AND PHARM. BULL., 37,(1989) N, C. 1705-1716
  作者：HORITA, KIYOSHI、NAGATO, SATOSHI、OIKAWA, YUJI、YONEMITSU, OSAMU

  DOI：——

  日期：——