1,2-O-isopropylidene-4a-carba-β-L-xylofuranose | 203311-13-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 1,2-O-isopropylidene-4a-carba-β-L-xylofuranose
• 英文别名: (3aS,4R,5S,6aR)-5-(hydroxymethyl)-2,2-dimethyl-4,5,6,6a-tetrahydro-3aH-cyclopenta[d][1,3]dioxol-4-ol
• CAS: 203311-13-1
• 化学式: C₉H₁₆O₄
• 分子量: 188.224
• InChiKey: BSSJGLGSOGCFIB-LXGUWJNJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.2
• 重原子数：
  13
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  58.9
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  1,2-O-isopropylidene-4a-carba-β-L-xylofuranose 在 盐酸 作用下， 以 水 为溶剂， 反应 18.0h， 以96%的产率得到(1R,2R,3R,4S)-4-hydroxymethyl-1,2,3-trihydroxycyclopentane
  参考文献：
  名称：

  Highly Functionalized Cyclopentanes by Radical Cyclization of Unsaturated Bromolactones. 2. A Facile Synthesis of the First Carbaaldohexofuranoses and Their Conversion to Carbapentofuranoses

  摘要：

  A novel type of carbasugars, carbaaldohexofuranoses, has been prepared using a 5-exo-trig radical cyclization of C-2 substituted 2,3-unsaturated 7-bromoheptono-1,4-lactones as the key step. During the cyclization step, two-stereogenic centers were farmed with high stereoselectivity. The lactone moieties of the cyclopentane derivatives were reduced to the alcohols, and the following carbahexofuranoses were synthesized: carba-beta-D-mannofuranose, carba-alpha-L-glucofuranose and 5-amino-5-deoxycarba-alpha-L-glucofuranose. Side chain degradation of the two former compounds gave the carbapentofuranoses: carba-alpha-L-xylofuranose and carba-beta-D-lyxofuranose.

  DOI：

  10.1021/jo971928l
• 作为产物：
  描述：

  (3R,4R,5R)-5-((4S,5S)-5-Bromomethyl-2,2-dimethyl-[1,3]dioxolan-4-yl)-3,4-dihydroxy-dihydro-furan-2-one 在 吡啶 、 sodium tetrahydroborate 、 sodium periodate 、 偶氮二异丁腈 、 三正丁基氢锡 、 sodium methylate 、 三乙胺 作用下， 以 甲醇 、 二氯甲烷 、 乙酸乙酯 为溶剂， 反应 39.0h， 生成 1,2-O-isopropylidene-4a-carba-β-L-xylofuranose
  参考文献：
  名称：

  Highly Functionalized Cyclopentanes by Radical Cyclization of Unsaturated Bromolactones. 2. A Facile Synthesis of the First Carbaaldohexofuranoses and Their Conversion to Carbapentofuranoses

  摘要：

  A novel type of carbasugars, carbaaldohexofuranoses, has been prepared using a 5-exo-trig radical cyclization of C-2 substituted 2,3-unsaturated 7-bromoheptono-1,4-lactones as the key step. During the cyclization step, two-stereogenic centers were farmed with high stereoselectivity. The lactone moieties of the cyclopentane derivatives were reduced to the alcohols, and the following carbahexofuranoses were synthesized: carba-beta-D-mannofuranose, carba-alpha-L-glucofuranose and 5-amino-5-deoxycarba-alpha-L-glucofuranose. Side chain degradation of the two former compounds gave the carbapentofuranoses: carba-alpha-L-xylofuranose and carba-beta-D-lyxofuranose.

  DOI：

  10.1021/jo971928l

文献信息

• A flexible synthesis of cyclopentitol derivatives based on ring-closing metathesis of carbohydrate-derived 1,6-dienes
  作者：Huib Ovaa、Bas Lastdrager、Jeroen D. C. Codée、Gijs A. van der Marel、Herman S. Overkleeft、Jacques H. van Boom

  DOI：10.1039/b207509a

  日期：——

  Four partially protected stereoisomeric cyclopentenetriols 5, 10, 15 and 21 have been prepared by ring-closing metathesis of carbohydrate-derived 1,6-dienes. The presence of a differentiated allylic alcohol in the cyclopentenetriols allows a variety of synthetic transformations, underlining the synthetic use of the prepared cyclopentenetriol derivatives as chiral building blocks.

  四个部分保护的立体异构环戊烯三醇5、10、15和21已通过碳水化合物衍生的1,6-二烯的环闭合易位反应制备。环戊烯三醇中存在一个区分的烯丙醇，使其能够进行多种合成转化，强调了制备的环戊烯三醇衍生物作为手性构建模块的合成应用。