[异名]牛蒡酚[结构式][主要物性]分子式C21H24O6;分子量372.42。白色结晶,熔点101~102℃。UVλmaxEtOHnm(lgε):230(4.13),281(3.76)。IRνmaxKBrcm-1:3470(OH),1770(C=O),1610,1592,1520,3030(芳环),1465,1390,1270,1250,1140,1020。1HNMR(CD3—CO—CD3)δ:3.72(6H,s,2×OCH3),3.80(3H,s, (共 369 字) [阅读本文] >>