Methods: First, soak the fagopyrum cymosum part growing above the ground in warm alcohol for concentrate.Then, extract with organic solvent ingradient.

• 方法:取金荞麦地上部分,先用乙醇温浸、浓缩,再用有机溶剂梯度萃取后经红外、紫外、核磁共振、质谱等波谱解析和物理常数测定等方法。