5-O-benzyl-2,3-O-isopropylidene-D-ribitol | 117248-94-9

• 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: 5-O-benzyl-2,3-O-isopropylidene-D-ribitol
• 英文别名: 5-benzyloxy-2,3-O-isopropylidene-D-ribitol；(1R)-1-[(4R,5S)-5-(hydroxymethyl)-2,2-dimethyl-1,3-dioxolan-4-yl]-2-phenylmethoxyethanol
• CAS: 117248-94-9
• 化学式: C₁₅H₂₂O₅
• 分子量: 282.337
• InChiKey: HEXNEWSDYJGYOM-HZSPNIEDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.6
• 重原子数：
  20
• 可旋转键数：
  6
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.6
• 拓扑面积：
  68.2
• 氢给体数：
  2
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  5-O-benzyl-2,3-O-isopropylidene-D-ribitol 在 咪唑 、 正丁基锂 、 草酰氯 、 四丁基氟化铵 、 二甲基亚砜 、 三乙胺 作用下， 以 四氢呋喃 、 正己烷 、 二氯甲烷 、 N,N-二甲基甲酰胺 、 乙腈 为溶剂， 反应 34.5h， 生成 (4R,5R)-5-(1-Benzyloxymethyl-vinyl)-2,2-dimethyl-[1,3]dioxolane-4-carbaldehyde
  参考文献：
  名称：

  Synthetic studies toward the preparation of (4R,5R)-(−)-3-[(benzyloxy)methyl]-4,5-O-isopropylidene-cyclopenten-2-one: an important synthetic intermediate for carbanucleosides

  摘要：

  The carbocyclic compound (4R,5R)-(-)-3-[(benzyloxy)methyl]-4,5-O-isopropylidene-2-cyclopentenone 1 is an important synthetic intermediate to access a variety of carbanucleosides. Herein, synthetic studies that lead to this valuable compound employing inexpensive D-ribose as the chiral source are presented. (C) 2004 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2004.11.069
• 作为产物：
  描述：

  allyl 2,3-O-isopropylidene-β-D-ribofuranoside 在 甲醇 、 lithium aluminium tetrahydride 、 potassium tert-butylate 、 sodium hydride 、 臭氧 、 三乙胺 作用下， 以 四氢呋喃 、 二氯甲烷 、 二甲基亚砜 、 N,N-二甲基甲酰胺 为溶剂， 反应 37.0h， 生成 5-O-benzyl-2,3-O-isopropylidene-D-ribitol
  参考文献：
  名称：

  Synthetic studies toward the preparation of (4R,5R)-(−)-3-[(benzyloxy)methyl]-4,5-O-isopropylidene-cyclopenten-2-one: an important synthetic intermediate for carbanucleosides

  摘要：

  The carbocyclic compound (4R,5R)-(-)-3-[(benzyloxy)methyl]-4,5-O-isopropylidene-2-cyclopentenone 1 is an important synthetic intermediate to access a variety of carbanucleosides. Herein, synthetic studies that lead to this valuable compound employing inexpensive D-ribose as the chiral source are presented. (C) 2004 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2004.11.069

文献信息

• Reduction of sugar lactones to hemiacetals with lithium triethylborohydride
  作者：Cesar Gonzalez、Sam Kavoosi、Andersson Sanchez、Stanislaw F. Wnuk

  DOI：10.1016/j.carres.2016.06.002

  日期：2016.9

  ribono-1,4-lactones and gulono-1,4-lactone as well as ribono-1,5-lactone and glucono-1,5-lactones with LTBH (1.2 equiv.) in CH2Cl2 at 0 degrees C for 30 min provided the corresponding pentose or hexose hemiacetals in high yields. Commonly used in carbohydrate chemistry protecting groups such as trityl, benzyl, silyl, acetals and to some extent acyls are compatible with this reduction.

  在0°C下于30°C的条件下在CH2Cl2中用LTBH（1.2当量）还原1,4-内酯和1,4-内酯和1,5-内酯和1,5-葡糖苷以及1,5-内酯。 min提供高产率的相应戊糖或己糖半缩醛。通常在碳水化合物化学中使用的保护基如三苯甲基，苄基，甲硅烷基，乙缩醛和一定程度上的酰基与该还原反应相容。
• Ophthamological drugs
  申请人：Toone J. Eric

  公开号：US20060135609A1

  公开（公告）日：2006-06-22

  The present invention relates generally to ophthamological drugs. More specifically, the inventon relates to a method of modifying (derivatizing) ophthamological drugs so as to increase their penetration through the cornea. The invention also relates to drugs modified (derivatized) in accordance with the instant method and to the use of same in treating conditions associated with elevated intraocular pressure, particularly, glaucoma.

  本发明一般涉及眼科药物。更具体地，本发明涉及一种修改（衍生化）眼科药物的方法，以增加它们通过角膜的渗透性。本发明还涉及根据本方法修改（衍生化）的药物，以及将其用于治疗与眼内压升高相关的疾病，特别是青光眼。
• OPHTHAMOLOGICAL DRUGS
  申请人：Toone Eric J.

  公开号：US20090318542A1

  公开（公告）日：2009-12-24

  The present invention relates generally to ophthamological drugs. More specifically, the invention relates to a method of modifying (derivatizing) ophthamological drugs so as to increase their penetration through the cornea. The invention also relates to drugs modified (derivatized) in accordance with the instant method and to the use of same in treating conditions associated with elevated intraocular pressure, particularly, glaucoma.

  本发明通常涉及眼科药物。更具体地说，本发明涉及一种改性（衍生化）眼科药物的方法，以增加它们穿过角膜的渗透性。本发明还涉及按照本方法改性（衍生化）的药物，以及将其用于治疗与眼内压升高有关的疾病，特别是青光眼。
• US8642644B2
  申请人：——

  公开号：US8642644B2

  公开（公告）日：2014-02-04
• Synthetic studies toward the preparation of (4R,5R)-(−)-3-[(benzyloxy)methyl]-4,5-O-isopropylidene-cyclopenten-2-one: an important synthetic intermediate for carbanucleosides
  作者：Eleonora Elhalem、María J. Comin、Julieta Leitofuter、Guadalupe García-Liñares、Juan B. Rodriguez

  DOI：10.1016/j.tetasy.2004.11.069

  日期：2005.1

  The carbocyclic compound (4R,5R)-(-)-3-[(benzyloxy)methyl]-4,5-O-isopropylidene-2-cyclopentenone 1 is an important synthetic intermediate to access a variety of carbanucleosides. Herein, synthetic studies that lead to this valuable compound employing inexpensive D-ribose as the chiral source are presented. (C) 2004 Elsevier Ltd. All rights reserved.