3-((S)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-2,2-difluoro-3-methylsulfanylthiocarboxyoxy-propionic acid ethyl ester | 211807-62-4

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: 3-((S)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-2,2-difluoro-3-methylsulfanylthiocarboxyoxy-propionic acid ethyl ester
• CAS: 211807-62-4
• 化学式: C₁₂H₁₈F₂O₅S₂
• 分子量: 344.401
• InChiKey: JHQZTJZYSYQZDW-JAMMHHFISA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.37
• 重原子数：
  21.0
• 可旋转键数：
  5.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.83
• 拓扑面积：
  53.99
• 氢给体数：
  0.0
• 氢受体数：
  7.0

反应信息

• 作为反应物：
  描述：

  3-((S)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-2,2-difluoro-3-methylsulfanylthiocarboxyoxy-propionic acid ethyl ester 在 2,6-二甲基吡啶 、 盐酸 、 硫酸氢铵 、 偶氮二异丁腈 、 三氟甲磺酸三甲基硅酯 、 三正丁基氢锡 、 lithium tri-t-butoxyaluminum hydride 、 三乙胺 、 六甲基二硅氮烷 、 甲胺 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 甲苯 为溶剂， 反应 57.0h， 生成 1-[(2S,5R)-3,3-difluoro-5-(hydroxymethyl)tetrahydrofuran-2-yl]-5-fluoro-pyrimidine-2,4-dione
  参考文献：
  名称：

  Synthesis of 2,3-dideoxy-2,2-difluoro-l-glycero-pentofuranosyl nucleosides

  摘要：

  Various 2,3-dideoxy-2,2-difluoro-L-glycero-pentofuranosyl nucleosides were synthesized via the key intermediate, 5-O-benzoyl-2,3-dideoxy-2,2-difluoro-L-glycero-pentofuranose (6). 2,3-O-Isopropylidene-L-glyceraldehyde was coupled with ethyl bromodifluoroacetate under Reformatsky conditions to obtain the diastereomeric mixture of ethyl (4S)-3-hydroxy-3-(2,2-dimethyl-1,3-dioxolan-4-yl)-2,2-difluoro propionate (1). Treatment of compound 1 with carbon disulfide, sodium hydride and methyl iodide followed by reduction afforded ethyl (4S)-3-(2,2-dimethyl-1,3-dioxolan-4-yl)-2,2-difluoro propionate (3). Compound 3 was treated with 5% HCl in ethanol, followed by refluxing in benzene under Dean-Stark conditions, to afford the lactone 4. The compound 4 was protected and reduced to afford the key intermediate 6. For the synthesis of pyrimidine derivatives 8-21, compound 6 was converted to the mesylate 7 and condensed with various silyl protected pyrimidine bases. The inosine and adenine derivatives 38-41 were obtained from compound 6 and 6-chloropurine using standard procedures. Compounds 22-35 and 38-41 were evaluated for their antiviral activity against HIV-1, HBV, HSV-1 and HSV-2, and for cellular toxicity. None of the synthesized compounds showed any significant activity or toxicity. Single-crystal X-ray structure of 1-(2,3-dideoxy-2,2-difluoro-beta-L-glycero-pentofuranosyl)-5-iodocytosine (34) suggested a 2'-exo/3'-endo conformation for the carbohydrate moiety. (C) 1998 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0008-6215(97)00275-9
• 作为产物：
  描述：

  二硫化碳 、 3-((S)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-2,2-difluoro-3-hydroxy-propionic acid ethyl ester 、 碘甲烷 在 sodium hydride 作用下， 生成 3-((S)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-2,2-difluoro-3-methylsulfanylthiocarboxyoxy-propionic acid ethyl ester
  参考文献：
  名称：

  Synthesis of 2,3-dideoxy-2,2-difluoro-l-glycero-pentofuranosyl nucleosides

  摘要：

  Various 2,3-dideoxy-2,2-difluoro-L-glycero-pentofuranosyl nucleosides were synthesized via the key intermediate, 5-O-benzoyl-2,3-dideoxy-2,2-difluoro-L-glycero-pentofuranose (6). 2,3-O-Isopropylidene-L-glyceraldehyde was coupled with ethyl bromodifluoroacetate under Reformatsky conditions to obtain the diastereomeric mixture of ethyl (4S)-3-hydroxy-3-(2,2-dimethyl-1,3-dioxolan-4-yl)-2,2-difluoro propionate (1). Treatment of compound 1 with carbon disulfide, sodium hydride and methyl iodide followed by reduction afforded ethyl (4S)-3-(2,2-dimethyl-1,3-dioxolan-4-yl)-2,2-difluoro propionate (3). Compound 3 was treated with 5% HCl in ethanol, followed by refluxing in benzene under Dean-Stark conditions, to afford the lactone 4. The compound 4 was protected and reduced to afford the key intermediate 6. For the synthesis of pyrimidine derivatives 8-21, compound 6 was converted to the mesylate 7 and condensed with various silyl protected pyrimidine bases. The inosine and adenine derivatives 38-41 were obtained from compound 6 and 6-chloropurine using standard procedures. Compounds 22-35 and 38-41 were evaluated for their antiviral activity against HIV-1, HBV, HSV-1 and HSV-2, and for cellular toxicity. None of the synthesized compounds showed any significant activity or toxicity. Single-crystal X-ray structure of 1-(2,3-dideoxy-2,2-difluoro-beta-L-glycero-pentofuranosyl)-5-iodocytosine (34) suggested a 2'-exo/3'-endo conformation for the carbohydrate moiety. (C) 1998 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0008-6215(97)00275-9