Methyl 3-(3-Pyridyl)propiolate → 3-(5-{2-[6-(tert-Butoxycarbonyl-methyl-amino)-pyridin-2-yl]-ethoxy}-indol-1-yl)-3-pyridin-3-yl-acrylic acid methyl ester

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Reaction Steps

The title compound was synthesized from {6-[2-(1H-indol-5-yloxy)-ethyl]-pyridin-2-yl}-methyl-carbamic acid tert-butyl ester and pyridin-3-yl-propynoic acid methyl ester, using the procedure described in Example 16, step (d1), in a 96% yield, as an E/Z isomeric mixture. 1H NMR (Cl3CD), δ: 8.74–8.64 (m, 2H), 7.68 (m, 0.4), 7.57–7.48 (m, 2H), 7.45 (m, 0.6H), 7.38 (m, 0.4H), 7.28 (m, 0.6H), 7.13 (m, 1H), 7.08 (m, 1H), 6.96 (d, 1H, J=7.0 Hz), 6.88 (d, 0.4H, J=3.5 Hz), 6.80–6.66 (m, 1.6H), 6.61 (d, 0.6H, J=3.2 Hz), 6.54 (d, 0.4H, J=3.5 Hz), 6.26 (s, 0.4H), 6.24 (s, 0.6H), 4.39 (m, 2H), 3.67 (s, 1.2H), 3.61 (s, 1.8H), 3.39 (m, 3H), 3.20 (m, 2H), 1.51 (s, 9H).

Provenance & Evidence