Diisopropylethylamine → tert-butyl ((4aS,5S,7aS)-5-(difluoromethyl)-7a-(2-fluoro-5-(5-methoxypyrazine-2-carboxamido)phenyl)-4a,5,7,7a-tetrahydro-4H-furo[3,4-d][1,3]thiazin-2-yl)carbamate

HRID 707699노트

반응식

HRID 707699 반응식
[NH2:1][C:2]1[CH:3]=[CH:4][C:5]([F:28])=[C:6]([C@:8]23[CH2:16][O:15][C@H:14]([CH:17]([F:19])[F:18])[C@H:13]2[CH2:12][S:11][C:10]([NH:20][C:21](=[O:27])[O:22][C:23]([CH3:26])([CH3:25])[CH3:24])=[N:9]3)[CH:7]=1.[CH3:29][O:30][C:31]1[N:32]=[CH:33][C:34]([C:37](O)=[O:38])=[N:35][CH:36]=1.C(N(CC)C(C)C)(C)C.F[P-](F)(F)(F)(F)F.[PH4+]>C(Cl)Cl>[F:18][CH:17]([F:19])[C@@H:14]1[C@@H:13]2[C@@:8]([C:6]3[CH:7]=[C:2]([NH:1][C:37]([C:34]4[CH:33]=[N:32][C:31]([O:30][CH3:29])=[CH:36][N:35]=4)=[O:38])[CH:3]=[CH:4][C:5]=3[F:28])([N:9]=[C:10]([NH:20][C:21](=[O:27])[O:22][C:23]([CH3:25])([CH3:24])[CH3:26])[S:11][CH2:12]2)[CH2:16][O:15]1

참가 물질

6

반응물 4

HCID 81531DiisopropylethylamineHCID 21584439Phosphonium hexafluorophosphateHCID 457898115-Methoxy-2-pyrazinecarboxylic acidHCID 57827488tert-butyl ((4aS,5S,7aS)-7a-(5-amino-2-fluorophenyl)-5-(difluoromethyl)-4a,5,7,7a-tetrahydro-4H-furo[3,4-d][1,3]thiazin-2-yl)carbamate

생성물 1

HCID 86724404tert-butyl ((4aS,5S,7aS)-5-(difluoromethyl)-7a-(2-fluoro-5-(5-methoxypyrazine-2-carboxamido)phenyl)-4a,5,7,7a-tetrahydro-4H-furo[3,4-d][1,3]thiazin-2-yl)carbamate수율 48.6%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

To a stirred solution of tert-butyl ((4aS,5S,7aS)-7a-(5-amino-2-fluorophenyl)-5-(difluoromethyl)-4a,5,7,7a-tetrahydro-4H-furo[3,4-d][1,3]thiazin-2-yl)carbamate (2.70 g) and 5-methoxypyrazine-2-carboxylic acid (1.25 g, described in WO2009/091016), in DCM (30 mL) was added N,N-diisopropylethylamine (3.5 mL) and (1H-benzotriazol-1-yloxy)tripyrrolidin-1-yl)phosphonium hexafluorophosphate (4.2 g). The reaction mixture was stirred at RT for 18 h, concentrated under vacuum to circa 20 mL, and sodium bicarbonate (sat., aq., 100 mL) was added. The mixture was extracted with EtOAc (2×150 mL), the combined organic portions were dried over MgSO4, evaporated and purified by silica gel chromatography (0% to 25% EtOAc in DCM gradient) to afford the title compound (1.74 g) as a white solid. NMR (400 MHz, CDCl3) δ ppm 1.54 (s, 9H), 2.76-2.88 (m, 1H), 2.95-3.28 (m, 1H), 3.34-3.53 (m, 1H), 3.83-3.93 (m, 1H), 4.10 (s, 3H), 4.46-4.68 (m, 2H), 5.98 (dt, J=3.6, 56.8 Hz, 1H), 7.07-7.20 (m, 1H), 7.36-7.48 (m, 1H), 7.96-8.04 (d, J=7.8 Hz, 1H), 8.20 (d, J=1.0 Hz, 1H), 9.04 (d, J=1.3 Hz, 1H), 9.53 (br. s., 1H)

후처리

  1. concentrationconcentrated under vacuum to circa 20 mL, and sodium bicarbonate (sat., aq., 100 mL)
  2. additionwas added
  3. extractionThe mixture was extracted with EtOAc (2×150 mL)
  4. dry with materialthe combined organic portions were dried over MgSO4
  5. customevaporated
  6. custompurified by silica gel chromatography (0% to 25% EtOAc in DCM gradient)

출처 및 근거

ORD 기록
ord-7bbf952a837b4377a79ebf090f5ae712
출처 데이터셋
uspto-grants-2015_11
특허 번호
US09175013B2

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