Studies on the Chemical Constituents of Xylanche himalaica Chemical constituents from stems and leaves of Cryptolepis buchananii Studies on Antibacterial Constituents of the Unripe Fruit of Forsythia suspensa (Thunb.) Vahl Chemical constituents of Tibetan herbal medicine Sibiraea laevigata Chemical constituents from rhizoma of Anemone altaica Studies on Chemical Constituents of Ligustrum obtusifolium Sieb.et Zucc. Studies on the Chemical Constituents of Duzhong (The Bark of Eucommia ulmoides Oliv.) Chemical constituents from plant of Stelleropsis tianschanica