Toluene → ethyl [(1S)-5-(2-{2-[4'-(5-acetyl-2-thienyl)-1,1'-biphenyl-4-yl]-5-methyl-1,3-oxazol-4-yl}ethoxy)-2,3-dihydro-1H-inden-1-yl]acetate

関与物質

反応条件

反応手順

To a solution containing ethyl((1S)-5-(2-[2-(4-bromophenyl)-5-methyl-1,3-oxazol-4-yl]ethoxy)-2,3-dihydro-1H-inden-1-yl)acetate (0.100 g, 0.21 mmol) [prepared from 2-[5-methyl-2-(4-bromophenyl)-1,3-oxazol-4-yl]ethanol and ethyl[(1S)-5-hydroxy-2,3-dihydro-1H-inden-1-yl]acetate (Example 135)], 1,1′-bis(diphenylphosphino)-ferrocene]dichloro palladium(II) (16.9 mg, 0.02 mmol), and 5-acetyl-2-thienylboronic acid (0.062 g, 0.41 mmol) in degassed toluene and dioxane (4:1, 2 mL) was added aqueous 2 M sodium carbonate (0.5 mL). The mixture was heated at 85° C. for 16 hours. Solvents were evaporated under vacuum and the residue was dissolved in methanol and acetonitrile and filtered through a C8 reverse phase extraction cartridge. Solvents were evaporated and the residue was dissolved in acetonitrile and purified by HPLC to obtain ethyl[(1S)-5-(2-(2-[4′-(5-acetyl-2-thienyl)-1,1′-biphenyl-4-yl]-5-methyl-1,3-oxazol-4-yl)ethoxy)-2,3-dihydro-1H-inden-1-yl]acetate in 46% yield. (50 mg, 0.09 mmol) MS (electro spray) 530.4 (M+H)+, 1H NMR (CDCl3) δ 1.24 (t, 3H), 1.71 (m, 1H), 2.37 (m, 5H), 2.57 (s, 3H), 2.68 (m, 1H), 2.83 (m, 2H), 3.03 (m, 2H), 3.48 (m, 1H), 4.17 (m, 4H), 6.67 (m, 2H), 7.02 (d, 1H), 7.39 (d, 1H), 7.67 (d, 1H), 7.73 (d, 2H), 8.01 (d, 2H).

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