Desmodianone H and uncinanone B, potential tyrosinase inhibitors obtained from Lespedeza maximowiczii by using bioactivity-guided isolation.

The article presents a study focusing on tyrosinase inhibitors desmodianone H and uncinanone B obtained from Lespedeza maximowiczii shrub by using bioactivity-guided isolation. The findings of the study include the determination of structures of inhibitors by analysis of their nuclear magnetic resonance and mass spectrometry data, high antityrosinase activity shown by inhibitors, and the conclusion that it could be an effective skin-whitening agent.