[物理性质] |
无色针状结晶 (稀甲醇), 熔点 90°, [α]22D -44.2°(c=0.91, 甲醇)。UVλEtOhmax nm (logε): 281 (4.34), 312.5 (4.06); IRνKBrmax cm -1: 3360, 2920, 1649, 1586, 1505, 1442; NMR (CDCl3) σ: 1.70 (3H×2, s, 二甲基丙烯基之CH3), 1.76 (3H×2, br.s, 二甲基丙烯基之苄基上氢 CH3), 2.8~2.9 (2H, m, H-3), 3.38 (4H, d, 7, 二甲基丙烯基之苄基上的氢), 5.3 (2H, m, H-2和二甲基丙烯基之烯上之氢), 5.54 (1H, s, OH-4'), 6.48 (1H, s, OH-7, 可用D2O交换), 6.52 (1H, d, 8.5, H-6), 6.80 (1H, d, 8.5, H-5'), 7.18 (1H, dd, 8.5和2, H-6'), 7.20 (1H, d, 2 H-2'), 7.70 (1H, d, 8.5, H-5); MS m/e: 392.1971 (M+) |