A new dihydrochromone derivative, named chaenomone, was isolated from the twigs of Chaenomeles sinensis (Thouin) Koehne. The structure was determined by spectro
Thermosensitivehydrogels. were prepared by graft polymerization of chitosan and N-isopropylacrylamide via ^60Co γ-radiation.The effects of monomer concentratio
From rhizomes of Hemsleya giganthy collected in Shichuan of China, 16 compounds were isolated.Among them, three compounds (8, 9, 15) are new natural products ca