Pranab Ghosh - Natural Product and Polymer Chemistry Laboratory, Department of Chemistry, University of North Bengal, Darjeeling, ۷۳۴۰۱۳, India
Rabindranath Singha - Natural Product and Polymer Chemistry Laboratory, Department of Chemistry, University of North Bengal, Darjeeling, ۷۳۴۰۱۳, India
Md Golam Rasul - Department of Biochemistry, College of Dentistry, Qaseem Private Colleges, Buraidah- SaudiArabia

Phytochemical investigation of the pet-benzene extract of the leaves of Psidiumguajava was yielded the triterpenoids, olean-۱۲(۱۳), ۱۵(۱۶)-diene, olean-۱۲(۱۳), ۱۵(۱۶)-dien-۳β-oland olean-۱۵(۱۶)-en-۱۱α-ol. All the three compounds are reported for the first time from Psidiumguajava. The compounds were established by chemical characterized using IR, NMR, and Mass analysis by comparison with authentic sample. All the three triterpenoids showed moderate to good biocidal activity against some bacterial and fungal pathogens.

Psidium guajava, phytochemical investigation, triterpenoids, biocidal activity