(S)-5'-Hydroxy-2,2,2',2'-tetramethyl-[4,5']bi[[1,3]dioxanyl]-5-one | 850252-50-5

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (S)-5'-Hydroxy-2,2,2',2'-tetramethyl-[4,5']bi[[1,3]dioxanyl]-5-one
• 英文别名: (4S)-4-(5-hydroxy-2,2-dimethyl-1,3-dioxan-5-yl)-2,2-dimethyl-1,3-dioxan-5-one
• CAS: 850252-50-5
• 化学式: C₁₂H₂₀O₆
• 分子量: 260.287
• InChiKey: OCJBULYJLQYHAN-SECBINFHSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.3
• 重原子数：
  18
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.92
• 拓扑面积：
  74.2
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为产物：
  描述：

  2,2-二甲基-1,3-二恶烷-5-酮 在 L-脯氨酸 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 72.0h， 以54%的产率得到(S)-5'-Hydroxy-2,2,2',2'-tetramethyl-[4,5']bi[[1,3]dioxanyl]-5-one
  参考文献：
  名称：

  Dihydroxyacetone Variants in the Organocatalytic Construction of Carbohydrates:  Mimicking Tagatose and Fuculose Aldolases

  摘要：

  Dihydroxyacetone variants have been explored as donors in organocatalytic aldol reactions with various aldehyde and ketone acceptors. The protected form of dihydroxyacetone that was chosen for in-depth study was 2,2-dimethyl-1,3-dioxan-5-one, 1. Among the catalysts surveyed here, proline proved to be superior in terms of yield and stereoselectivities in the construction of various carbohydrate scaffolds. In a fashion analogous to aldolase enzymes, the de novo preparation of L-ribulose, L-lyxose, D-ribose, D-tagatose, 1-amino-1-deoxy-D-lyxitol, and other carbohydrates was accomplished via the use of 1 and proline. In reactions using 2,2-dimethyl-1,3-dioxan-5-one 1 as a donor, (S)-proline can be used as a functional mimic of tagatose aldolase, whereas (R)-proline can be regarded as an organocatalytic mimic of fuculose aldolase.

  DOI：

  10.1021/jo0602017

文献信息

• Direct asymmetric organocatalytic de novo synthesis of carbohydrates
  作者：Christoph Grondal、Dieter Enders

  DOI：10.1016/j.tet.2005.09.060

  日期：2006.1

  A biomimetic organocatalytic asymmetric synthesis of carbohydrates can be accomplished by a proline catalyzed aldol reaction with the dihydroxyacetone equivalent 2,2-dimethyl-1,3-dioxan-5-one and various aldehydes. The biomimetic C3+Cn strategy directly generates selectively protected carbohydrates in one step, which can be easily deprotected. Additionally, the stereoselective reduction of the keto

  碳水化合物的仿生有机催化不对称合成可以通过脯氨酸催化的羟醛反应与二羟基丙酮当量的2,2-二甲基-1,3-二恶烷-5-酮和各种醛反应来完成。仿生C 3 + C n策略可在一个步骤中直接生成选择性保护的碳水化合物，可以很容易地对其进行脱保护。另外，酮基功能的立体选择性降低允许直接进入不同的醛糖。
• Direct Organocatalytic De Novo Synthesis of Carbohydrates
  作者：Dieter Enders、Christoph Grondal

  DOI：10.1002/anie.200462428

  日期：2005.2.11
• Highly Enantioselective Direct <i>syn</i>- and <i>anti</i>-Aldol Reactions of Dihydroxyacetones Catalyzed by Chiral Primary Amine Catalysts
  作者：Sanzhong Luo、Hui Xu、Long Zhang、Jiuyuan Li、Jin-Pei Cheng

  DOI：10.1021/ol703023t

  日期：2008.2.1

  We present herein simple primary-tertiary diamine-Bronsted acid conjugates that catalyze both syn- and anti-adol reactions of dihydroxyacetones (DHAs) with high diastereoselectivities and enantioselectivities. This type of organocatalysts functionally mimics all four DHA aldolases, namely L-fuculose-1-phosphate aldolase, D-tagatose-1,6-diphosphate aldolase, D-fructose-1,6-diphosphate aldolase, and L-rhamnulose-1-phosphate aldolase.