2-(5-Methyl-2-thiophen-2-yloxazol-4-yl)ethyl tosylate → 2-(Benzo[1,3]dioxol-5-yloxy)-2-methyl-3-{4-[2-(5-methyl-2-thiophen-2-yl-oxazol-4-yl)-ethoxy]-phenyl}-propionic Acid

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Reaction Steps

The title compound was prepared from 2-(benzo[1,3]dioxol-5-yloxy)-3-(4-hydroxy-phenyl)-2-methyl propionic acid ethyl ester and toluene-4-sulfonic acid 2-(5-methyl-2-thiophen-2-yl-oxazol-4-yl)-ethyl ester using the procedure of Example 78. 1H NMR (400 MHz, CDCl3) δ 7.57 (dd, 1H, J=3.90 Hz, J=1.47 Hz), 7.35 (dd, 1H, J=5.37 Hz, J=1.47 Hz), 7.13 (d, 2H, J=8.31 Hz), 7.04 (dd, 1H, J=5.37 Hz, J=3.90 Hz), 6.78 (d, 2H, J=8.79 Hz), 6.60 (d, 1H, J=8.30 Hz), 6.42 (d, 1H, J=2.44 Hz), 6.33 (dd, 1H, J=8.31 Hz, J=2.44 Hz), 5.88 (d, 2H, J=0.98 Hz), 4.15 (t, 2H, J=6.35 Hz), 3.16 (d, 1H, J=13.92 Hz), 3.04 (d, 1H, J=13.92 Hz), 2.93 (t, 2H, J=6.35 Hz), 2.31 (s, 3H), 1.30 (s, 3H); HRMS (ES+) m/z exact mass calcd for C27H26NO7S 508.1430, found 508.1425.

Provenance & Evidence