Chemical constituents from Clerodendrum inerme Chemical constituents from Mahonia bodinieri Chemical constituents from Lepidogrammitis drymoglossoide Chemical constituents of Gentiana rhodantha Study on nucleotidoids from n-butyl alcohol part of sponge Cinachyrella australiensis Chemical studies on alkaloids of Chinese medicinal herbs Daphniphyllum macropodum Historical story on natural medicine chemistry: Application of UV, IR, MS, and NMR spectra in structure elucidation of natural products