Polyfluoroalkylated biphenyl was obtained from reaction of benzene with R<sub>F</sub>I/Na<sub>2</sub>S<sub>2</sub>O<sub>4</sub> using cetyltrimethylammonium bro
Two new compounds have been isolated from methanol extract of roots of Pulsatilla chinensis(Bunge) Hegel. Their structures were established as 3-oxo-23-hydroxy-