311 Raddeanin A
中药学

        [结构式][主要物性]分子式C47H76O16;分子量897.10。熔点242～244℃,[α]D25-8°(c=0.8,CH3OH)。IRνmaxcm-1:3100～3600(OH),2900(CH),1697(COOH),1640(C=C),1465(CH3,CH2),1398(OH),1365(CH3),1310,1230,1154,1120(羟基的C-O),1070,1050,1024,885,845P(β-D及α-L-吡喃糖的吸收),810(吡喃环    （共 902 字）     [阅读本文] >>