Chrysanthemum sinense Sabine의 성분 연구

Studies on the Constituents of Chrysanthemum sinense Sabine

A colorless sublime needles(A), C10H10O4, mp 142~143o, was isolated from the fresh flowers of Chrysanthemum sinense Sabine in 0.16% yield. Its ir, nmr and mass spectral data suggested that it may have an aromatic methylester structure. Hydrolysis of this substance with 10% sodium hydroxide solution yielded terephthalic acid and methanol. This substance was confirmed as dimethyl terephthalate by comparison of ir and nmr spectra, and TLC and GC behaviors of an authentic sample which was prepared from terephthalic acid by methylation. This is the first report that dimethyl terephthalate was isolated in the Cormpositae plants.