alexa Synthesis And In Vitro Antiplasmodial, In Vitro Antimycobacterial And In Vitro Cytotoxicity Studies Of Oleanolic Acid And Its Ester
ISSN: 2329-6836

Natural Products Chemistry & Research
Open Access

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5th International Conference and Exhibition on Pharmacognosy, Phytochemistry & Natural Products
July 24-25, 2017 Melbourne, Australia

Victor O Fadipe, Abayomi Oguntunde, Hussaini Doko Ibrahim and Andrew R Opoku
Federal Ministry of Science and Technology, Nigeria
Raw Materials Research and Development Council, Nigeria
University of Zululand, South Africa
Posters & Accepted Abstracts: Nat Prod Chem Res
DOI: 10.4172/2329-6836-C1-017
Abstract
Tuberculosis (TB) and malaria are chronic fatal diseases and attained a dangerous status worldwide. New drugs are therefore needed to halt the mortality rate. Pentacyclic triterpenes, a group of naturally occurring compound have been reported to have broad spectrum of biological activities that could be harnessed for development of new drugs for TB and malaria. In a quest to find new antimalarial and anti-mycobacterial drugs, oleanolic acid (OA) was isolated from the flower buds of Syzygium aromaticum. The derivative, 3-O-Acetyl-Oleanolic acid (OAA), was synthesized from the isolated product and their biological activities were carried out and compared. The antiplasmodial and antimycobacterial activity of oleanolic acid and its derivative were subsequently investigated against Plasmodium falciparum (Chloroquine Sensitive Strain) NF54 and Mycobacterium tuberculosis H37RV, respectively. The compounds were evaluated for cytotoxicity activity using MTT (human embryonic kidney (HEK293) and human liver model (HepG2)). OAA exhibited IC50 of 4.3 μg/ml against P. falciparum while OA exhibited IC50 of 27.4 μg/ml. OAA exhibited MIC99 of 79.8 μg/ml against M. tuberculosis while OA exhibited MIC99 of 73.1 μg/ml. The MTT test (HEK293 and HepG2) were in the range of IC50≥300 μg/ml, indicating low toxicity level. The data obtained above, indicate that both compounds can serves as template for the synthesis of potent anti-TB and anti-malaria drugs.
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