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Triterpenoids from Psidium guajava with biocidal activity

Author(s): P Ghosh, A Mandal, P Chakraborty, MG Rasul, Madhumita Chakraborty, A Saha
Natural Product and Polymer Chemistry Laboratory, Department of Chemistry and Department of Botany, University of North Bengal, Darjeeling – 734 013

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E-mail: [email protected]

In continuation of our studies on the phytochemical investigation of medicinal plants available in the foothills of Darjeeling and Teri, we report herein the isolation of two triterpenoids betulinic acid and lupeol from the leaf extract of Psidium guajava and their potential antimicrobial and phytotoxic activities. All the structures of the isolated compounds were confi rmed by spectral (IR, NMR) analysis and by comparison with the literature reports.

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