(4R,5S)-4-methyl-5-phenyl-2-(N-cyanimino)oxazolidine | 1270965-71-3

• 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: (4R,5S)-4-methyl-5-phenyl-2-(N-cyanimino)oxazolidine
• 英文别名: [(4R,5S)-4-methyl-5-phenyl-4,5-dihydro-1,3-oxazol-2-yl]cyanamide
• CAS: 1270965-71-3
• 化学式: C₁₁H₁₁N₃O
• 分子量: 201.228
• InChiKey: KHVKSQNFXCYETI-PSASIEDQSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  57.4
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  2-chloro-8-methyl-(4H)-1,3,2-benzodioxaphosphorin-2-oxide 、 (4R,5S)-4-methyl-5-phenyl-2-(N-cyanimino)oxazolidine 在 三乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 7.0h， 生成 (S(P),4'R(C),5'S(C))-8,4'-dimethyl-2-(5'-phenyl-2'-N-cyaniminooxazolidin-3'-yl)(4H)-1,3,2-benzodioxaphosphorin-2-oxide 、 (R(P),4'R(C),5'S(C))-8,4'-dimethyl-2-(5'-phenyl-2'-N-cyaniminooxazolidin-3'-yl)(4H)-1,3,2-benzodioxaphosphorin-2-oxide
  参考文献：
  名称：

  Diastereoselective Synthesis of cycloSaligenyl-Nucleosyl-Phosphotriesters

  摘要：

  AbstractA diastereoselective synthesis of cycloSal‐phosphotriesters (cycloSal=cycloSaligenyl) based on chiral auxiliaries has been developed that allows the synthesis of single diastereomers of the cycloSal‐pronucleotides. In previously described synthesis routes, the cycloSal‐compounds were always obtained as 1:1 diastereomeric mixtures that could be separated in only rare cases. However, it was shown that the diastereomers have different antiviral activity, toxicity, and hydrolysis stabilities. Here, first a chiral thiazoline derivative was used to prepare nonsubstituted and 5‐methyl‐cycloSal‐phosphotriesters in 48 and ≥95 % de (de=diastereomeric excess). However, this approach failed to give the important group of 3‐substituted cycloSal‐nucleotides. Therefore, two other chiral groups were discovered that allowed the synthesis of (RP)‐ and (SP)‐3‐methyl‐cycloSal‐phosphotriesters as well. The antiviral activity was found to be five‐ to 20‐fold different between the two individual diastereomers, which proved the importance of this approach.

  DOI：

  10.1002/chem.201002657
• 作为产物：
  描述：

  左旋去甲麻黄碱 、 N-氰亚胺基-S,S-二硫代碳酸二甲酯 以 甲醇 为溶剂， 反应 18.0h， 以95%的产率得到(4R,5S)-4-methyl-5-phenyl-2-(N-cyanimino)oxazolidine
  参考文献：
  名称：

  Diastereoselective Synthesis of cycloSaligenyl-Nucleosyl-Phosphotriesters

  摘要：

  AbstractA diastereoselective synthesis of cycloSal‐phosphotriesters (cycloSal=cycloSaligenyl) based on chiral auxiliaries has been developed that allows the synthesis of single diastereomers of the cycloSal‐pronucleotides. In previously described synthesis routes, the cycloSal‐compounds were always obtained as 1:1 diastereomeric mixtures that could be separated in only rare cases. However, it was shown that the diastereomers have different antiviral activity, toxicity, and hydrolysis stabilities. Here, first a chiral thiazoline derivative was used to prepare nonsubstituted and 5‐methyl‐cycloSal‐phosphotriesters in 48 and ≥95 % de (de=diastereomeric excess). However, this approach failed to give the important group of 3‐substituted cycloSal‐nucleotides. Therefore, two other chiral groups were discovered that allowed the synthesis of (RP)‐ and (SP)‐3‐methyl‐cycloSal‐phosphotriesters as well. The antiviral activity was found to be five‐ to 20‐fold different between the two individual diastereomers, which proved the importance of this approach.

  DOI：

  10.1002/chem.201002657