Sodium Carbonate → (R)-8-cyclopentyl-2-(2-(3,6-dihydro-2H-pyran-4-yl)-1H-imidazol-1-yl)-7-ethyl-5-methyl-7,8-dihydropteridin-6(5H)-one

HRID 44848

반응식

HRID 44848 반응식
Br[C:2]1[N:3]([C:7]2[N:16]=[CH:15][C:14]3[N:13]([CH3:17])[C:12](=[O:18])[C@@H:11]([CH2:19][CH3:20])[N:10]([CH:21]4[CH2:25][CH2:24][CH2:23][CH2:22]4)[C:9]=3[N:8]=2)[CH:4]=[CH:5][N:6]=1.C([O-])([O-])=O.[Na+].[Na+].[O:32]1[CH2:37][CH:36]=[C:35](B2OC(C)(C)C(C)(C)O2)[CH2:34][CH2:33]1.C([O-])(O)=O.[Na+]>O1CCOCC1.O.CO.CCOC(C)=O.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[CH:21]1([N:10]2[C:9]3[N:8]=[C:7]([N:3]4[CH:4]=[CH:5][N:6]=[C:2]4[C:35]4[CH2:36][CH2:37][O:32][CH2:33][CH:34]=4)[N:16]=[CH:15][C:14]=3[N:13]([CH3:17])[C:12](=[O:18])[C@H:11]2[CH2:19][CH3:20])[CH2:25][CH2:24][CH2:23][CH2:22]1

참가 물질

8

반응물 4

HCID 10340Sodium CarbonateHCID 516892Sodium BicarbonateHCID 112180533,6-Dihydro-2H-pyran-4-boronic acid pinacol esterHCID 58405307(R)-2-(2-bromo-1H-imidazol-1-yl)-8-cyclopentyl-7-ethyl-5-methyl-7,8-dihydropteridin-6(5H)-one

생성물 1

HCID 58405609(R)-8-cyclopentyl-2-(2-(3,6-dihydro-2H-pyran-4-yl)-1H-imidazol-1-yl)-7-ethyl-5-methyl-7,8-dihydropteridin-6(5H)-one

시약·촉매·용매 3

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)촉매HCID 8857Ethyl Acetate용매HCID 22592949Dioxane methanol water용매

반응 조건

온도
110 °C

실험 절차

(R)-2-(2-bromo-1H-imidazol-1-yl)-8-cyclopentyl-7-ethyl-5-methyl-7,8-dihydropteridin-6(5H)-one (Example 65, 130 mg, 1 eq) in dioxane/water/MeOH (2 mL/0.5 mL/0.05 mL) was combined with Pd(dppf)Cl2 (39.6 mg, 0.2 eq), Na2CO3 (100 mg, 3 eq), and 2-(3,6-dihydro-2H-pyran-4-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (116 mg, 2 eq). The reaction mixture was stirred at 110° C. overnight. This was diluted with EtOAc and a saturated NaHCO3 solution. The layers were separated and the aqueous layer was extracted with EtOAc (2×25 mL). The organic layers were dried over MgSO4, filtered, and concentrated under reduced pressure. The crude product was purified by MPLC and further purified by preparative HPLC. LCMS: 409.2 m/z (M+H)+; ret. Time: 2.41 min (Analytical Method A). 1H-NMR (CDCl3, 300 MHz): δ: 7.81 (s, 1H), 7.67 (s, 1H), 7.46 (s, 1H), 6.51 (s, 1H), 4.35-4.30 (m, 4H), 3.90-3.81 (m, 4H), 3.40 (s, 3H), 2.41-2.3 (m, 1H), 2.20-1.54 (m, 9H), 0.89 (t, J=7.5 Hz, 3H).

후처리

  1. customThe layers were separated
  2. extractionthe aqueous layer was extracted with EtOAc (2×25 mL)
  3. dry with materialThe organic layers were dried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure
  6. customThe crude product was purified by MPLC
  7. customfurther purified by preparative HPLC

출처 및 근거

ORD 기록
ord-194898befb5b4e6daf7fbcba96a62761
출처 데이터셋
uspto-grants-2013_09
특허 번호
US08541418B2

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