Hydrochloric Acid → 1,5-anhydro-3-(6-bromo-1-methyl-4-oxo-1,4-dihydrobenzo[h]quinazolin-3(2H)-yl)-2,3-dideoxy-L-threo-pentitol

HRID 1183147ノート

反応式

HRID 1183147 の反応式
[Br:1][C:2]1[CH:3]=[C:4]2[C:9](=[C:10]3[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=13)[NH:8][CH2:7][N:6]([C@H:16]1[CH2:21][CH2:20][O:19][CH2:18][C@@H:17]1[O:22][Si](C(C)(C)C)(C)C)[C:5]2=[O:30].Cl.[C:32]([O-])(O)=O.[Na+]>C1COCC1>[Br:1][C:2]1[CH:3]=[C:4]2[C:9](=[C:10]3[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=13)[N:8]([CH3:32])[CH2:7][N:6]([C@@H:16]1[C@@H:17]([OH:22])[CH2:18][O:19][CH2:20][CH2:21]1)[C:5]2=[O:30]

参加物

5

反応物 3

HCID 313Hydrochloric Acid2 回HCID 516892Sodium BicarbonateHCID 866903641,5-anhydro-3-(6-bromo-4-oxo-1,4-dihydrobenzo[h]quinazolin-3(2H)-yl)-2-O-[tert-butyl(dimethyl)silyl]-3,4-dideoxy-L-threo-pentitol

生成物 1

HCID 866903661,5-anhydro-3-(6-bromo-1-methyl-4-oxo-1,4-dihydrobenzo[h]quinazolin-3(2H)-yl)-2,3-dideoxy-L-threo-pentitol

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

To a solution of 1,5-anhydro-3-(6-bromo-4-oxo-1,4-dihydrobenzo[h]quinazolin-3(2H)-yl)-2-O-[tert-butyl(dimethyl)silyl]-3,4-dideoxy-L-threo-pentitol (0.89 g, 1.8 mmol) in THF (17.5 mL) was added hydrochloric acid (1 N, 10 mL). Additional concentrated hydrochloric acid (2 mL) was added. After stirring overnight, the solution was basified by addition of saturated, aqueous NaHCO3, then extracted 2× with EtOAc. The organics were washed with brine, dried over MgSO4, filtered, concentrated, and dried to provide 1,5-anhydro-3-(6-bromo-1-methyl-4-oxo-1,4-dihydrobenzo[h]quinazolin-3(2H)-yl)-2,3-dideoxy-L-threo-pentitol that gave a mass ion (ES+) of 392.9 for [M+H]+.

後処理

  1. extractionextracted 2× with EtOAc
  2. washThe organics were washed with brine
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customdried

出典と根拠

ORDレコード
ord-7f0ac6c2cdda457ebce2e4d49e79c9ed
出典データセット
uspto-grants-2014_03
特許番号
US08664234B2

反応ノート

読み込み中…