Isolation and Identification of α-Glucosidase and Protein Glycation Inhibitors from Stereospermum colais.

Rani, M.; Raghu, K.; Nair, Mangalam; Padmakumari, K.

Stereospermum colais (family Bignoniaceae) is a well-known pharmacologically potent medicinal plant reported in traditional systems of medicine. Phytochemical investigation of the roots of S. colais resulted in the isolation of seven compounds, and the metabolites were screened for its α-glucosidase enzyme inhibition and anti-glycation property. The compounds identified were β-sitosterol (1), 2-(4′-hydroxyphenyl) ethyl undecanoate (2), 2-(4′-hydroxyphenyl)ethyl pentadecanoate (3), 5α-ergosta-7,22-dien-3β-ol (4), ursolic acid (5), lapachol (6), and pinoresinol (7). Ursolic acid, lapachol, and pinoresinol possessed IC values of 119.01, 130.29, and 125.62 nM, respectively, compared to standard ascorbic acid with an IC value of 201.01 nM. The other compounds failed to show the activity. Results of the current study showcased the possible exploration of this medicinal plant for the treatment of type 2 diabetes in line with the development of phytopharmaceutical industry.

BIGNONIACEAE; MEDICINAL plants; PHYTOCHEMICALS; GLUCOSIDASE inhibitors; URSOLIC acid; TYPE 2 diabetes treatment

Applied Biochemistry & Biotechnology, 2014, Vol 173, Issue 4, p946

0273-2289

Academic Journal

10.1007/s12010-014-0898-y