Publications

new bioactive chalcones in propolis from el salvador.

2',3'-dihydroxy-4,4'-dimethoxychalcone (1) and 2',3',4-trihydroxy-4'-methoxy-chalcone, two new chalcones, were isolated from propolis from el salvador. the compounds showed significant antibacterial and antifungal activity and moderate toxicity to artemia salina nauplii.