tert-Butyl 5-((4-((6-methoxybenzofuran-2-yl)ethynyl)phenyl)-ethynyl)-2,2-dimethyl-1,3-dioxan-5-ylcarbamate → Tert-butyl-5-(4-(2-(6-methoxybenzofuran-2-yl)ethyl)phenethyl)-2,2-dimethyl-1,3-dioxan-5-ylcarbamate

Participants

Reaction Steps

When the product of Step E was substituted for tert-butyl-5-((4-(3-(6-methoxy-3-(3,4,5-trimethoxybenzoyl)-1H-indol-1-yl)prop-1-ynyl)phenyl)ethynyl)-2,2-dimethyl-1,3-dioxan-5-ylcarbamate in Example 14, Step D, the similar process afforded the title compound in 69%, as light creamy crystalline compound. 1H-NMR CDCl3) 1.40 (s, 3H); 1.42 (s, 3H); 1.46 (s, 9H); 1.92-2.03 (m, 2H); 2.49-2.55 (m, 2H); 2.99 (s, 4H); 3.65 (d, 2H, J=11.79 Hz); 3.83 (s, 3H); 3.87 (d, 2H, J=11.76 Hz); 4.94 (s, 1H); 6.25 (s, 1H); 6.80 (dd, 1H, J=2.24, 8.48 Hz); 6.97 (d, 1H), J=1.95 Hz); 7.09 (s, 4H); 7.30 (d, 2H, J=8.48 Hz).

Provenance & Evidence