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Phosphate → (5R,6Z)-6-(6,7-dihydro-4H-pyrazolo[5,1-c][1,4]oxazin-2-ylmethylene)-7-oxo-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid

HRID 1158923
ノート
印刷プレビュー

反応式

HRID 1158923 の反応式
C(O[CH:5]([C:28]1[CH:36]=[C:31]2[CH2:32][O:33][CH2:34][CH2:35][N:30]2[N:29]=1)[C:6]1(Br)[C:12](=[O:13])[N:11]2[C@@H:7]1[S:8][CH:9]=[C:10]2[C:14]([O:16]CC1C=CC([N+]([O-])=O)=CC=1)=[O:15])(=O)C.P([O-])([O-])([O-])=O>C1COCC1.[Pd]>[N:29]1[N:30]2[C:31]([CH2:32][O:33][CH2:34][CH2:35]2)=[CH:36][C:28]=1/[CH:5]=[C:6]1\[C@@H:7]2[N:11]([C:12]\1=[O:13])[C:10]([C:14]([OH:16])=[O:15])=[CH:9][S:8]2
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 2

HCID 1061PhosphateHCID 118472844-nitrobenzyl (5R)-6-[(acetyloxy)(6,7-dihydro-4H-pyrazolo[5,1-c][1,4]oxazin-2-yl)methyl]-6-bromo-7-oxo-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate

生成物 1

HCID 11847461(5R,6Z)-6-(6,7-dihydro-4H-pyrazolo[5,1-c][1,4]oxazin-2-ylmethylene)-7-oxo-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid収率 49.1%

試薬・触媒・溶媒 2

HCID 23938Palladium触媒
HCID 8028
Tetrahydrofuran
溶媒

実験手順

To a solution of 4-nitrobenzyl (5R)-6-[(acetyloxy)(6,7-dihydro-4H-pyrazolo[5,1-c][1,4]oxazin-2-yl)methyl]-6-bromo-7-oxo-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate (0.35 g, 0.6 mmol) in THF (20 ml), under nitrogen, was added 20 ml of a phosphate buffer solution (0.5M, pH 6.5), and 120 mg of 10% Pd/C. The mixture was hydrogenated at 40-50 psi for 3 hr, and then filtered through Celite. The filter pad was washed with THF, and the filtrate was extracted with ethyl acetate. The organic extract was dried over anhydrous magnesium sulfate and evaporated. The residue was washed with ether to give 0.09 g of a yellow solid; HRMS: calcd for C13H11N3O4S, 305.0470; found (ESI+), 306.05434; 1H NMR (DMSO-d6) δ 4.07-4.09 (t, 2H), 4.13-4.17 (t, 2H), 4.82 (s, 2H), 6.36 (s, 1H), 6.55 (s, 1H), 7.17 (s, 1H), 7.55 (s, 1H), 12.80 (bs, 1H).

後処理

  1. filtrationfiltered through Celite
  2. washThe filter pad was washed with THF
  3. extractionthe filtrate was extracted with ethyl acetate
  4. extractionThe organic extract
  5. dry with materialwas dried over anhydrous magnesium sulfate
  6. customevaporated
  7. washThe residue was washed with ether

出典と根拠

ORDレコード
ord-0e3cffb7efd7423a9170572b68ec7f98
出典データセット
uspto-grants-2010_10
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07812014B2

反応ノート

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