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为了进一步研究具有抗凝作用的４羟基香豆素与稀土离子的协同作用，丰富金属有机化学，为寻找更好的抗凝药物提供依据，合成了４—羟基香豆素稀土化合物。１ 材料与方法１１ 试剂 稀土氧化物，纯度大于９９．９％，自制。其它试剂均为分析纯。１２ 仪器 １１０６元?
In order to further study the synergetic effect of 4-hydroxycoumarin with rare earth ions on the anticoagulant effect, enrich the metallo-organic chemistry and provide the basis for finding better anticoagulant drugs, and synthesize 4-hydroxycoumarin rare earth compounds. 1 Materials and methods 1 1 reagent rare earth oxides, more than 99.9% purity, homemade. Other reagents are of analytical grade. 1 2 instrument 1106 yuan?