Chemical constituents and bioactivities of Zanthoxylum avicennae Studies on the chemical constituents in herb of Ranunculus sceleratus Study on distributed patterns of scoparone and ayapin in Dendrobium species from Yunnan Investigation of three coumarin components in thorns of Gleditsia sinensis and their cytotoxic activity to tumor cells Main chemical components for clearing heat and relieving sore throat in different germplasm of Canarium album Chemical constituents from aerial parts of Artemisia dracunculus var. turkestanica Studies on Chemical Constituents in the Fruit of Canarium album Raeusch