Acetic Acid → HCID 69732875、化合物

HRID 2416425ノート

反応式

HRID 2416425 の反応式
[CH2:1]([N:8]1[C:13]2[N:14]([CH3:27])[C:15](=[O:26])[N:16]([CH2:19][CH2:20][CH2:21][CH2:22][C@H:23]([OH:25])[CH3:24])[C:17](=[O:18])[C:12]=2[C:11](=[O:28])[CH:10]=[C:9]1[CH3:29])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[C:49](O)(=[O:51])[CH3:50].CCOC(/N=N/C(OCC)=O)=O>O1CCCC1>[C:49]([O:25][C@@H:23]([CH3:24])[CH2:22][CH2:21][CH2:20][CH2:19][N:16]1[C:17](=[O:18])[C:12]2[C:11](=[O:28])[CH:10]=[C:9]([CH3:29])[N:8]([CH2:1][C:2]3[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=3)[C:13]=2[N:14]([CH3:27])[C:15]1=[O:26])(=[O:51])[CH3:50]

参加物

6

反応物 4

HCID 176Acetic AcidHCID 11776TriphenylphosphineHCID 5462977Diethyl azodicarboxylateHCID 60123474HCID 60123474、化合物

生成物 1

HCID 69732875HCID 69732875、化合物収率 86%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

To a mixture of (R)-8-benzyl-1,7-dimethyl-3-(5-hydroxyhexyl)pyrido[2,3-d]pyrimidine-2,4,5(1H,3H,8H)-trione (1.26 g, 3.18 mmol), triphenylphosphine (2.50 g, 9.52 mmol), acetic acid (0.54 ml, 9.52 mmol) and tetrahydrofuran (20 ml), cooled in an ice bath, was added diethylazodicarboxylate (1.5 ml, 9.5 mmol) dropwise. After stirring at room temperature for 4hours, the mixture was concentrated under reduced pressure. The residue was purified by column chromatography on silica gel eluting with 20% ethyl acetate-hexanes to afford (S)-3-(5-acetoxyhexyl)-8-benzyl-1,7-dimethylpyrido[2,3-d]pyrimidine-2,4,5(1H,3H,8H)-trione (1.2 g, 86% yield) as an oil. 1H NMR (300 MHz, CDCl3) δ 1.20 (d, 3H), 1.30-1.75 (m, 6H), 2.02 (s, 3H), 2.49 (s, 3H), 3.67 (s, 3H), 4.03 (t, 2H), 4.88 (sextet, 1H), 5.30 (s, 2H), 6.56 (s, 1H), 7.30-7.56 (m, 5H).

後処理

  1. temperaturecooled in an ice bath
  2. concentrationthe mixture was concentrated under reduced pressure
  3. customThe residue was purified by column chromatography on silica gel eluting with 20% ethyl acetate-hexanes

出典と根拠

ORDレコード
ord-283ccd95c09246eda992ed412020edda
出典データセット
uspto-grants-2004_11
特許番号
US06825180B2

反応ノート

読み込み中…