Thymidine → 2,5-Methano-5H,9H-pyrimido(2,1-b)(1,5,3)dioxazepin-9-one, 2,3-dihydro-3-(hydroxymethyl)-8-methyl-, (2R,3R,5R)-

HRID 28321

反応式

HRID 28321 の反応式
[C@@H:1]1([N:9]2[CH:17]=[C:15]([CH3:16])[C:13](=[O:14])[NH:12][C:10]2=[O:11])[O:8][C@H:5]([CH2:6][OH:7])[C@@H:3](O)[CH2:2]1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>>[CH3:16][C:15]1[C:13](=[O:14])[N:12]=[C:10]2[N:9]([C@@H:1]3[O:8][C@H:5]([CH2:6][OH:7])[C@H:3]([O:11]2)[CH2:2]3)[CH:17]=1

参加物

3

反応物 2

HCID 5789ThymidineHCID 11776Triphenylphosphine

生成物 1

HCID 4579822,5-Methano-5H,9H-pyrimido(2,1-b)(1,5,3)dioxazepin-9-one, 2,3-dihydro-3-(hydroxymethyl)-8-methyl-, (2R,3R,5R)-

実験手順

There are a variety of known techniques for converting a nucleoside into an anhydronucleoside. For example, the anhydronucleoside can be prepared by mixing thymidine with triphenylphosphine and azeotropically drying with portions of acetonitrile (MeCN). The resulting mass is suspended in MeCN and then cooled. The mixture is rapidly stirred and diisopropylazodicarcobxylate in MeCN is added dropwise to the mixture. The resulting mixture is treated with water to form a suspension that is filtered to afford anhydrothymidine. (Grierson, J. R., Shields, A. F., Nuclear Medicine and Biology, 2000, 27 143-156; Balagopala, M. I., Ollapally, A. P., and Lee, H. J., Nucleosides-Nucleotides, 1996, 15(4) 899-906).

後処理

  1. dry with materialazeotropically drying with portions of acetonitrile (MeCN)
  2. temperaturecooled
  3. additionis added dropwise to the mixture
  4. additionThe resulting mixture is treated with water
  5. customto form a suspension that
  6. filtrationis filtered

出典と根拠

ORDレコード
ord-a30fca9873514a169f7249087f944381
出典データセット
uspto-grants-2008_09
特許番号
US07419653B2

関連ノート

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