反应详情

Compound 17 was prepared from Compound 10 using the same procedure as described above for Compound 16. Yield 0.67 g (74.1%) as a waxy solid. Rf=0.28 (hexane:ethyl acetate 8:2); 1H NMR δ 6.89 (d, J=2.4 Hz, 2H), 6.23 (t, J=2.1 Hz, 1H), 5.68 (br s, 2H), 3.34–3.07 (m, 4H), 2.78–2.67 (m, 1H), 1.71–1.38 (m, 8H); 13C NMR δ 156.26, 150.31, 108.13, 101.59, 79.28, 52.27, 39.02, 31.39, 25.94; MS: (ESI, Pos.) m/z 305 ([M+23]+).