Spectral characterization of bioactive compounds from Costus pictus and Costus speciosus

The present study was made an attempt to characterize the chemical classes of the fractions showed promising biological activity against the chosen bacterial pathogens.Five chemical classes have been identified by the present study viz., 6-hydroxy-benzoxazolinone, (Z)-4-Coumaric acid 4-o-β-D-glucopyranoside, 3, 5-dimethoxy-4-hydroxy benzoate, 2, 3secoatisane type diterpene and 3, 4, 5-trihydroxy benzoate.Of these, 6-hydroxybenzoxazolinone, (Z)-4-Coumaric acid 4-o-β-D-glucopyranoside and 3, 5-dimethoxy-4hydroxy benzoate were identified from Costus speciosus and 2, 3-secoatisane type diterpene and 3, 4, 5-trihydroxy benzoate were identified from Costus pictus.It is important to observe that, 3, 5-dimethoxy-4-hydroxy benzoate has identified as new compound from Costus speciosus but the other compounds were identified previously by several authors.