Boron trifluoride etherate → Benzyl 7-((3aR,4R,7R,7aR)-7-methoxy-6,6-dimethyl-2-oxotetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-4-yloxy)-2-oxo-8-phenyl-2H-chromen-3-ylcarbamate

HRID 1511235노트

반응식

HRID 1511235 반응식
B(F)(F)F.CCOCC.[OH:10][C:11]1[C:20]([C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)=[C:19]2[C:14]([CH:15]=[C:16]([NH:28][C:29](=[O:38])[O:30][CH2:31][C:32]3[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=3)[C:17](=[O:27])[O:18]2)=[CH:13][CH:12]=1.ClC(Cl)(Cl)C(=N)O[C@H:43]1[C@@H:48]2[O:49][C:50](=[O:52])[O:51][C@@H:47]2[C@@H:46]([O:53][CH3:54])[C:45]([CH3:56])([CH3:55])[O:44]1.C(N(CC)CC)C>C(Cl)Cl>[CH3:54][O:53][C@H:46]1[C:45]([CH3:56])([CH3:55])[O:44][C@@H:43]([O:10][C:11]2[C:20]([C:21]3[CH:22]=[CH:23][CH:24]=[CH:25][CH:26]=3)=[C:19]3[C:14]([CH:15]=[C:16]([NH:28][C:29](=[O:38])[O:30][CH2:31][C:32]4[CH:33]=[CH:34][CH:35]=[CH:36][CH:37]=4)[C:17](=[O:27])[O:18]3)=[CH:13][CH:12]=2)[C@@H:48]2[O:49][C:50](=[O:52])[O:51][C@H:47]12

참가 물질

6

반응물 4

HCID 8000Boron trifluoride etherateHCID 8471TriethylamineHCID 25140396Benzyl 7-hydroxy-2-oxo-8-phenyl-2H-chromen-3-ylcarbamateHCID 67094064(3aR,4S,7R,7aR)-7-methoxy-6,6-dimethyl-2-oxo-tetrahydro-3aH-[1.3]dioxolo[4,5-c]pyran-4-yl 2,2,2-trichloroacetimidate

생성물 1

HCID 25138941Benzyl 7-((3aR,4R,7R,7aR)-7-methoxy-6,6-dimethyl-2-oxotetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-4-yloxy)-2-oxo-8-phenyl-2H-chromen-3-ylcarbamate수율 99%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

Boron trifluoride etherate (14.6 μL, 0.12 mmol) was added to 23f (155 mg, 0.39 mmol) and (3aR,4S,7R,7aR)-7-methoxy-6,6-dimethyl-2-oxo-tetrahydro-3aH-[1.3]dioxolo[4,5-c]pyran-4-yl 2,2,2-trichloroacetimidate (560 mg, 1.55 mmol) in anhydrous CH2Cl2 (9.70 mL). After stirring at room temperature for 48 hours, triethylamine (150 μL) was added and the solvent was concentrated. The residue was purified via column chromatography (SiO2, 100:1→40:1 CH2Cl2:Acetone) to give 25f as a colorless foam (225 mg, 99%): 1H NMR (CD2Cl2, 400 MHz) 8.37 (s, 1H), 7.75-7.73 (m, 2H), 7.60-7.36 (m, 10H), 7.32 (d, J=8.8 Hz, 1H), 5.77 (d, J=1.7 Hz, 1H), 5.26 (s, 2H), 4.76-4.68 (m, 1H), 4.36-4.28 (m, 1H), 3.56 (s, 3H), 3.28 (d, J=7.2 Hz, 1H), 1.37 (s, 3H), 1.31 (s, 3H); 13C NMR (CDCl3, 125 MHz) 157.2, 153.0 (2C), 152.1 (2C), 152.1, 134.4, 129.9, 129.8, 129.4, 127.7 (2C), 127.5, 127.2 (2C), 127.1 (2C), 127.0, 126.3, 121.5 (2C), 120.3, 111.2 (2C), 93.9, 81.9, 66.5, 59.4 (3C), 20.9 (2C); IR (film) νmax 3400, 2959, 2926, 2853, 2359, 2341, 1819, 1715, 1601, 1522, 1381, 1366, 1261, 1215, 1173, 1111, 1059, 970, 800, 700 cm−1; HRMS (ESI+) m/z: [M+H]+ calcd for C32H29NO10, 588.1870. found, 588.1846.

후처리

  1. concentrationthe solvent was concentrated
  2. customThe residue was purified via column chromatography (SiO2, 100:1→40:1 CH2Cl2:Acetone)

출처 및 근거

ORD 기록
ord-92502c7fc33f4d77be4bc98927eb50bf
출처 데이터셋
uspto-grants-2012_07
특허 번호
US08212011B2

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