Morin 3-O-β-D-glucopyranoside is a natural flavonoid with antifungal , anticancer and antioxidant activities. Morin 3-O-β-D-glucopyranoside inhibits reverse transcriptase , protein-tyrosine kinase and xanthine oxidase , and also shows anti- HIV , antiarteriosclerotic, and superoxide scavenging activities.