Premium
Costus spiralis ( Jacq .) Roscoe : A Novel Source of Flavones with α ‐Glycosidase Inhibitory Activity
Author(s) -
Oliveira Ana P.,
Coppede Juliana S.,
Bertoni Bianca W.,
Crotti Antônio E. M.,
França Suzelei C.,
Pereira Ana Maria S.,
TalebContini Silvia H.
Publication year - 2018
Publication title -
chemistry and biodiversity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 70
eISSN - 1612-1880
pISSN - 1612-1872
DOI - 10.1002/cbdv.201700421
Subject(s) - acarbose , chemistry , ethyl acetate , flavones , biochemistry , stereochemistry , enzyme , chromatography
Costus spiralis , a plant used in traditional Brazilian medicine for the treatment of complications in diabetes, was investigated. Assay of hexane, ethyl acetate, methanol, and aqueous fractions obtained by partition of a crude methanol extract of dried leaves of C. spiralis revealed that AGI activity was confined to the ethyl acetate fraction. Purification of this fraction yielded schaftoside and isoschaftoside. The AGI activities of the two flavones were lower than, but comparable with, that of the anti‐diabetic drug acarbose. In contrast, the IC 50 value of the ethyl acetate fraction was 1.95‐, 2.34‐, and 2.22‐fold higher than those of acarbose, schaftoside, and isoschaftoside, respectively. The results demonstrate for the first time that schaftoside and isoschaftoside are responsible, in part, for the AGI activity of C. spiralis . Our study suggests that further investigations into C. spiralis may lead to the discovery of additional compounds with antihyperglycemic activity.