Two new benzophenones from the moss Pogonatum spinulosum.

Two new benzophenone derivatives (1 and 2), named Pogonatone C and pogonatone D, were isolated from the moss Pogonatum spinulosum. Their structures were elucidated by spectroscopic data analyses. The cytotoxicity of compounds for HepG2, HCT-116, A-549 and PANC-1 cells line was also evaluated by using the MTT method. Pogonatone C (1) displays high cytotoxicity on PANC-1 cell with IC50 value of 9.2 µM.

Two new flavanones from Polytrichum commune Hedw.

Seven flavanones, including two new compounds coupled with styryl units, communins C (1) and D (2), as well as five known compounds, were isolated from Polytrichum commune Hedw. The planar structures of all compounds were determined using extensive spectroscopic analysis. The absolute configurations of two new compounds were assigned by comparing experimental ECD with calculated ECD. The cytotoxicity of all isolates against HCT-116, BGC803, MCF7 and PANC-1 cell lines was evaluated. Communin D exhibited significant cytotoxic activity on BGC803 cells with an IC50 value of 9.3 µM.