[01] Nnenna E. Okoronkwo, Department of Pure and Industrial Chemistry, Abia State University Uturu, Nigeria. [02] JohnBull O. Echeme, Department of Chemistry, Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria.

The structure of compound isolated from Stachytarpheta cayennensis leaves was elucidated using a combination of IR, 1H and 13C NMR, COSY, DEPT NMR, Mass spectral and comparison with similar structure found in literature. The chloroform extract of the plant leaves yielded a compound proposed as Nnenoside B. The compound was isolated at the ratio of 80:20 (pet.ether:chloroform) of elution mixtures of column chromatography and the purity monitored with TLC, which yielded a single spot with pet.ether/chloroform/methanol ratio of 55/30/15 (Rf = 0.893) was observed. As a follow-up on the study, therefore, it is anticipated that the compound can further be explored to reveal its potential applications.

Active Compound, Characterisation, Column Chromotography, Isolation, Plant, TLC

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