Hydrochloric Acid → (R)-1-[4-(2-Methyl-4-phenyl-5,8-dihydro-6H-pyrido[3,4-d]pyrimidin-7-yl)-pyrimidin-2-yl]ethanol

HRID 431657ノート

反応式

HRID 431657 の反応式
C([O:6][C@@H:7]([C:9]1[N:14]=[C:13]([N:15]2[CH2:24][CH2:23][C:22]3[C:21]([C:25]4[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=4)=[N:20][C:19]([CH3:31])=[N:18][C:17]=3[CH2:16]2)[CH:12]=[CH:11][N:10]=1)[CH3:8])(=O)CCC.Cl.[OH-].[Na+]>O1CCOCC1>[CH3:31][C:19]1[N:20]=[C:21]([C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[C:22]2[CH2:23][CH2:24][N:15]([C:13]3[CH:12]=[CH:11][N:10]=[C:9]([C@H:7]([OH:6])[CH3:8])[N:14]=3)[CH2:16][C:17]=2[N:18]=1

参加物

5

反応物 3

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 53875213(R)-1-[4-(2-methyl-4-phenyl-5,8-dihydro-6H-pyrido[3,4-d]pyrimidin-7-yl)-pyrimidin-2-yl]-ethyl butyrate

生成物 1

HCID 20767624(R)-1-[4-(2-Methyl-4-phenyl-5,8-dihydro-6H-pyrido[3,4-d]pyrimidin-7-yl)-pyrimidin-2-yl]ethanol収率 88%

試薬・触媒・溶媒 1

HCID 312751,4-Dioxane溶媒

実験手順

To a solution of (R)-1-[4-(2-methyl-4-phenyl-5,8-dihydro-6H-pyrido[3,4-d]pyrimidin-7-yl)-pyrimidin-2-yl]-ethyl butyrate (prepared according to the method of Example 86, Step E, 11.0 g, 26.4 mmol) in dioxane (13 mL) was added concentrated hydrochloric acid (22 mL, 264 mmol). This mixture was stirred at room temperature overnight, cooled to 0° C., neutralized via slow addition of 6 N aqueous sodium hydroxide, and extracted with ethyl acetate (4×). The combined organic extracts were dried over sodium sulfate, filtered, evaporated, and purified by flash extracts chromatography (2→5% methanol/ethyl acetate) to give an oil which after tritration with hexanes provided 8.0 g (88%) of the title compound as a white solid. mp: 114-116° C.; 1H NMR (CD3OD, 250 MHz) δ 8.26 (d, 1H), 7.62-7.47 (c, 5H), 6.52 (d, 1H), 4.79 (s, 2H), 4.66 (q, 1H), 4.24 (br s, 1H), 3.90-3.80 (c, 2H), 2.95 (t, 2H), 2.70 (s, 3H), 1.49 (d, 3H); MS (APCI) 348 (MH+), [α]D+15.6 (c, 1.0, MeOH).

後処理

  1. extractionextracted with ethyl acetate (4×)
  2. dry with materialThe combined organic extracts were dried over sodium sulfate
  3. filtrationfiltered
  4. customevaporated
  5. custompurified by flash extracts chromatography (2→5% methanol/ethyl acetate)
  6. customto give an oil which after tritration with hexanes

出典と根拠

ORDレコード
ord-6c32dc318c7c4fc8ba7fca8a6ea40ea8
出典データセット
uspto-grants-2003_12
特許番号
US06660740B1

反応ノート

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