(3aR,4R,7S,7aS)-4,7-di(bromomethyl)-2,2-dimethylperhydro[1,3]dioxolo[4,5-d][1,2]dioxine | 912362-67-5

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (3aR,4R,7S,7aS)-4,7-di(bromomethyl)-2,2-dimethylperhydro[1,3]dioxolo[4,5-d][1,2]dioxine
• 英文别名: meso-4,7-bis(bromomethyl)-2,2-dimethyltetrahydro[1,3]dioxolo[4,5-d][1,2]dioxine；(3aS,4S,7R,7aR)-4,7-bis(bromomethyl)-2,2-dimethyl-3a,4,7,7a-tetrahydro-[1,3]dioxolo[4,5-d][1,2]dioxine
• CAS: 912362-67-5
• 化学式: C₉H₁₄Br₂O₄
• 分子量: 346.016
• InChiKey: WCVFYWIEYCUJCY-KVFPUHGPSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  36.9
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (3aR,4R,7S,7aS)-4,7-di(bromomethyl)-2,2-dimethylperhydro[1,3]dioxolo[4,5-d][1,2]dioxine 在 salcomine 作用下， 以 四氢呋喃 为溶剂， 反应 16.0h， 以91 mg的产率得到(+/-)-1,6-dibromo-1,6-dideoxy-3,4-O-(1-methylethylidene)-psicose
  参考文献：
  名称：

  Osmium Catalyzed Dihydroxylation of 1,2-Dioxines:  A New Entry for Stereoselective Sugar Synthesis

  摘要：

  A series of 3,6-substituted 3,6-dihydro-1,2-dioxines were dihydroxylated with osmium tetroxide to furnish 1,2-dioxane-4,5-diols (peroxy diols) in yields ranging from 33% to 98% and with de values not less than 90%. The peroxy diols were then reduced to generate a stereospecific tetraol core with R, R, S, S or "allitol" stereochemistry. The peroxy diols and their acetonide derivatives were also ring-opened with Co(II) salen complexes to give novel hydroxy ketones in 77-100% yield, including the natural sugar psicose. Importantly, preliminary work on the catalytic asymmetric ring-opening of meso-peroxy diols using the Co(II) Jacobsens's catalyst indicates that asymmetric sugar synthesis from 1,2-dioxines is possible.

  DOI：

  10.1021/jo060949p
• 作为产物：
  描述：

  1,6-dibromohexa-2,4-diene 在 potassium osmate(VI) 、 N-甲基吲哚酮 、 氧气 、 对甲苯磺酸 、 Rose Bengal bis(triethylammonium) salt 、 柠檬酸 作用下， 以 二氯甲烷 、 水 为溶剂， 反应 31.0h， 生成 (3aR,4R,7S,7aS)-4,7-di(bromomethyl)-2,2-dimethylperhydro[1,3]dioxolo[4,5-d][1,2]dioxine
  参考文献：
  名称：

  Osmium Catalyzed Dihydroxylation of 1,2-Dioxines:  A New Entry for Stereoselective Sugar Synthesis

  摘要：

  A series of 3,6-substituted 3,6-dihydro-1,2-dioxines were dihydroxylated with osmium tetroxide to furnish 1,2-dioxane-4,5-diols (peroxy diols) in yields ranging from 33% to 98% and with de values not less than 90%. The peroxy diols were then reduced to generate a stereospecific tetraol core with R, R, S, S or "allitol" stereochemistry. The peroxy diols and their acetonide derivatives were also ring-opened with Co(II) salen complexes to give novel hydroxy ketones in 77-100% yield, including the natural sugar psicose. Importantly, preliminary work on the catalytic asymmetric ring-opening of meso-peroxy diols using the Co(II) Jacobsens's catalyst indicates that asymmetric sugar synthesis from 1,2-dioxines is possible.

  DOI：

  10.1021/jo060949p

文献信息

• Revisiting Bromohexitols as a Novel Class of Microenvironment‐Activated Prodrugs for Cancer Therapy
  作者：Henrik Johansson、Omar Hussain、Simon J. Allison、Tony V. Robinson、Roger M. Phillips、Daniel Sejer Pedersen

  DOI：10.1002/cmdc.201900578

  日期：2020.1.17

  even subtle changes in stereochemistry. However, no attempts have been made to improve the therapeutic window by rational drug design or by using a prodrug approach to exploit differences between tumour physiology and healthy tissue, such as acidic extracellular pH and hypoxia. Herein, we report the photochemical synthesis of highly substituted endoperoxides as key precursors for dibromohexitol derivatives

  溴己糖醇代表着一类有效的DNA烷基化碳水化合物化学治疗方法，由于安全方面的考虑，在过去的几十年中，溴化己糖醇一直被人们忽略。可用的有限的结构-活性关系数据揭示了细胞毒性的显着变化，甚至立体化学上的细微变化。但是，尚未尝试通过合理的药物设计或通过使用前药方法来改善肿瘤生理学与健康组织之间的差异（例如酸性细胞外pH和低氧）来改善治疗范围。在这里，我们报告了高度取代的内过氧化物作为二溴己糖醇衍生物的关键前体的光化学合成，并研究了它们作为靶向癌细胞的微环境激活的前药的用途。
• Osmium Catalyzed Dihydroxylation of 1,2-Dioxines:  A New Entry for Stereoselective Sugar Synthesis
  作者：Tony V. Robinson、Dennis K. Taylor、Edward R. T. Tiekink

  DOI：10.1021/jo060949p

  日期：2006.9.1

  A series of 3,6-substituted 3,6-dihydro-1,2-dioxines were dihydroxylated with osmium tetroxide to furnish 1,2-dioxane-4,5-diols (peroxy diols) in yields ranging from 33% to 98% and with de values not less than 90%. The peroxy diols were then reduced to generate a stereospecific tetraol core with R, R, S, S or "allitol" stereochemistry. The peroxy diols and their acetonide derivatives were also ring-opened with Co(II) salen complexes to give novel hydroxy ketones in 77-100% yield, including the natural sugar psicose. Importantly, preliminary work on the catalytic asymmetric ring-opening of meso-peroxy diols using the Co(II) Jacobsens's catalyst indicates that asymmetric sugar synthesis from 1,2-dioxines is possible.