Acetic Acid → (R)-3-[2,4-dioxo-1-(1,4,6-trimethyl-1H-indol-3-ylmethyl)-1,4-dihydro-2H-pyrido[3,2-d]pyrimidin-3-yl]-pentanoic acid

HRID 1887197ノート

反応式

HRID 1887197 の反応式
C[O:2][C:3](=[O:33])[CH2:4][C@H:5]([N:8]1[C:13](=[O:14])[C:12]2[N:15]=[CH:16][CH:17]=[CH:18][C:11]=2[N:10]([CH2:19][C:20]2[C:28]3[C:23](=[CH:24][C:25]([CH3:30])=[CH:26][C:27]=3[CH3:29])[N:22]([CH3:31])[CH:21]=2)[C:9]1=[O:32])[CH2:6][CH3:7].O.[OH-].[Li+].C(O)(=O)C>O.O1CCOCC1>[O:32]=[C:9]1[N:10]([CH2:19][C:20]2[C:28]3[C:23](=[CH:24][C:25]([CH3:30])=[CH:26][C:27]=3[CH3:29])[N:22]([CH3:31])[CH:21]=2)[C:11]2[CH:18]=[CH:17][CH:16]=[N:15][C:12]=2[C:13](=[O:14])[N:8]1[C@H:5]([CH2:6][CH3:7])[CH2:4][C:3]([OH:33])=[O:2]

参加物

6

反応物 3

HCID 176Acetic AcidHCID 168937Lithium hydroxide, monohydrateHCID 67501927(R)-3-[2,4-dioxo-1-(1,4,6-trimethyl-1H-indol-3-ylmethyl)-1,4-dihydro-2H-pyrido[3,2-d]pyrimidin-3-yl]-pentanoic acid methyl ester

生成物 1

HCID 46853762(R)-3-[2,4-dioxo-1-(1,4,6-trimethyl-1H-indol-3-ylmethyl)-1,4-dihydro-2H-pyrido[3,2-d]pyrimidin-3-yl]-pentanoic acid収率 42.3%

試薬・触媒・溶媒 2

HCID 962Water溶媒2 回HCID 312751,4-Dioxane溶媒

実験手順

A solution of 1.0 g of (R)-3-[2,4-dioxo-1-(1,4,6-trimethyl-1H-indol-3-ylmethyl)-1,4-dihydro-2H-pyrido[3,2-d]pyrimidin-3-yl]-pentanoic acid methyl ester and 187 mg of lithium hydroxide monohydrate in 20 mL water and 20 mL of 1,4-dioxane is stirred at room temperature for 3 h. The resulting mixture is neutralized with 0.26 mL of acetic acid and the resulting mixture is diluted with water. The product is extracted with ethyl acetate. The organic layer is washed with water and brine, dried (sodium sulfate), filtered and concentrated. The residue is purified by flash chromatography on silica gel. The combined fractions are concentrated and the residue is triturated with ether to give 410 mg (42%) of (R)-3-[2,4-dioxo-1-(1,4,6-trimethyl-1H-indol-3-ylmethyl)-1,4-dihydro-2H-pyrido[3,2-d]pyrimidin-3-yl]-pentanoic acid; LCMS (ESMS): m/z 435 (M+H+).

後処理

  1. extractionThe product is extracted with ethyl acetate
  2. washThe organic layer is washed with water and brine
  3. dry with materialdried (sodium sulfate)
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue is purified by flash chromatography on silica gel
  7. concentrationThe combined fractions are concentrated
  8. customthe residue is triturated with ether

出典と根拠

ORDレコード
ord-209d76e260c648f5a9eb517d4ffb59d6
出典データセット
uspto-grants-2013_08
特許番号
US08501749B2

反応ノート

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