抽象的

Evaluation of Antibacterial Potentiality of a Cyclopenta Naphthalene Tetraol Terpenoid Isolated from Curcuma caesia Roxb.

Arghya Ghosh, Ayan Bandyopadhyay, Parthadeb Ghosh and Padma Chatterjee

The assessment of antibacterial potentiality of 2,3,4,8a,9,9a-hexamethyl-2,3,3a,4,4a,5,8,8a,9,9a – decahydro - 1H – cyclopenta [b] naphthalene -1,2,3a,4a-tetraol was the primary objective of this paper followed by its physicochemical characterization. Chemical characterisation of 2, 3, 4, 8a, 9, 9a-hexamethyl-2,3,3a,4,4a,5,8,8a,9,9a-decahydro-1H-cyclopenta [b] naphthalene-1,2,3a,4a-tetraol was done through UV, IR (FT-IR), HRMS and NMR spectroscopic techniques. Assessment of its antibacterial activity was performed using agar cup method and disc diffusion assay respectively. The antibacterial compound was terpenoid in nature and identified as 2, 3, 4, 8a, 9, 9a-hexamethyl-2,3,3a,4,4a,5,8,8a,9,9a-decahydro-1H-cyclopenta [b] naphthalene-1,2,3a,4a-tetraol. The MIC values tested against different plant pathogenic fungi and bacteria are different. The MIC values of this compound was 365 μg/ml, 274 μg/ml, 389 μg/ml, 443 μg/ml tested against the bacterium Serratia marcescens, Erwinia herbicola, Xanthomonas sp. and Arthrobacter chlorophenolicus respectively. Best of our knowledge this was the first report of presence of 2, 3, 4, 8a, 9, 9a-hexamethyl-2, 3, 3a, 4, 4a, 5, 8, 8a, 9, 9a-decahydro-1H-cyclopenta [b] naphthalene-1,2,3a,4a-tetraol in plants. Due to its antibacterial property it may function in plant defense or commercialize as an ecofriendly crop protectant.

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