Acetic Acid → 1-[(2S,4R,5R)-5-(5-amino-2,7-dioxo-6H-thiazolo[4,5-d]pyrimidin-3-yl)-4-hydroxy-tetrahydrofuran-2-yl]propyl acetate

HRID 60714ノート

反応式

HRID 60714 の反応式
[C:1]([O:4][CH:5]([C@H:8]1[O:12][C@@H:11]([N:13]2[C:17]3[N:18]=[C:19]([NH2:23])[NH:20][C:21](=[O:22])[C:16]=3[S:15][C:14]2=[O:24])[C@@H:10](CC([O-])=O)[CH2:9]1)[CH2:6][CH3:7])(=[O:3])[CH3:2].C([O-])([O-])=[O:30].[K+].[K+].CC(O)=O>CO>[C:1]([O:4][CH:5]([C@@H:8]1[CH2:9][C@@H:10]([OH:30])[C@H:11]([N:13]2[C:17]3[N:18]=[C:19]([NH2:23])[NH:20][C:21](=[O:22])[C:16]=3[S:15][C:14]2=[O:24])[O:12]1)[CH2:6][CH3:7])(=[O:3])[CH3:2]

参加物

5

反応物 3

HCID 176Acetic AcidHCID 11430Potassium CarbonateHCID 137190218[(2R,3R,5S)-5-(1-acetoxypropyl)-2-(5-amino-2,7-dioxo-6H-thiazolo[4,5-d]pyrimidin-3-yl)tetrahydrofuran-3-yl]acetate2 回

生成物 1

HCID 1371086961-[(2S,4R,5R)-5-(5-amino-2,7-dioxo-6H-thiazolo[4,5-d]pyrimidin-3-yl)-4-hydroxy-tetrahydrofuran-2-yl]propyl acetate収率 88.9%

試薬・触媒・溶媒 1

HCID 887Methanol溶媒

実験手順

To a solution of [(2R,3R,5S)-5-(1-acetoxypropyl)-2-(5-amino-2,7-dioxo-6H-thiazolo[4,5-d]pyrimidin-3-yl)tetrahydrofuran-3-yl]acetate (compound 1g, 7.0 g, 16.9 mmol) in methanol (200 mL) was added K2CO3 (1.18 g, 8.5 mmol). After being stirred at room temperature for 12 hours, the reaction mixture was adjusted to pH 6.0 by addition of HOAc (1.2 g, 17 mmol), concentrated in vacuo and the residue was purified by column chromatography on silica gel (eluting with 1:2 EtOAc in petroleum ether) to afford 2.8 g of 1-[(2S,4R,5R)-5-(5-amino-2,7-dioxo-6H-thiazolo[4,5-d]pyrimidin-3-yl)-4-hydroxy-tetrahydrofuran-2-yl]propyl acetate (compound 22a) as a yellow solid. MS obsd. (ESI−) [(M−H)+]: 369.

後処理

  1. concentrationconcentrated in vacuo
  2. customthe residue was purified by column chromatography on silica gel (eluting with 1:2 EtOAc in petroleum ether)

出典と根拠

ORDレコード
ord-359a9a305e074d8d93f6e7265ee1aca4
出典データセット
uspto-grants-2016_09
特許番号
US09441008B2

反応ノート

読み込み中…