反应详情

When tert-butyl-5-ethynyl-2,2-dimethyl-1,3-dioxan-5-ylcarbamate was substituted for 1-octyne and the product of Step A was substituted for 5-iodo-2-tritylisoindoline in Example 2, Step D, the similar process afforded the title compound in 58% yield, as pale paste. 1H-NMR (CDCl3) 1.35 (d, 6H, J=6.01 Hz); 1.43 (s, 3H); 1.47 (s, 9H); 1.48 (s, 3H); 1.74 (s, 6H); 2.06 (s, 9H); 3.99 (d, 2H, J=11.45 Hz); 4.08 (d, 2H, J=11.51 Hz); 4.59-4.64 (m, 1H); 5.17 (broad s, 1H); 6.72 (d, 1H, J=8.61 Hz); 7.21 (dd, 1H, J=2.08, 8., Hz); 7.25 (d, 1H, J=2.09 Hz).