反应详情

Compound 44B was converted to compound 45B, using the methodology described for the conversion of 21A to 22A (see Scheme 3). Yield: 44% (amorphous). LCMS (method A); Rt: 1.84 min, ([M+H]+=258). 1H-NMR (400 MHz, CDCl3): δ 7.57 (s, 1H), 6.78-6.66 (bs, 1H), 3.42-3.38 (m, 2H), 2.59 (bt, J=7 Hz, 2H), 2.45 (s, 3H), 2.44-2.37 (m, 2H), 1.62-1.43 (m, 4H), 0.94 (t, J=7 Hz, 3H).