[化学名称] |
2,5-Cyclohexadien-1-one, 2,2'-[methylenebis[[2,4,6-trihydroxy-5-(1-oxobutyl)-3,1-phenylene] methylene]]bis[6-acetyl-3,5-dihydroxy-4,4-dimethyl- |
[物理性质] |
黄色结晶 (丙酮), 熔点 209~214°; UVλEtOHmax nm(ε): 222 (42000), 306 (27000), 351 (26000)[1]。浅黄色粉末状结晶, 熔点 210~214°; IRνKClmax cm -1: 3200 (羟基缔合吸收峰), 1625, 1610 (羰基缔合吸收峰), 1480 (烷烃吸收峰), 1200, 1160, 1030; NMR (CDCl3) δ: 0.92 (6H, 三连峰), 1.43和1.55 (12H, 两个单峰), 2.76 (6H, 单峰), 3.17 (4H, 多连峰), 3.56 (4H, 单峰), 3.85 (2H, 单峰); MS m/e: 820 (M+), 612, 417, 404, 268, 196, 193, 153, 70, 55, 43[2]。 |