title: Antileishmanial activity of prenylated coumarins isolated from Ferulago angulata and Prangos asperula.
abstract: Leishmaniasis has a wide spectrum of signs and symptoms due to infection to numbers of Leishmania species and makes enormous mortality and morbidity. There are clues of antileishmanial effects of prenylated coumarins. Apiaceae family is one of the most important sources of coumarins. Air-dried aerial parts of Ferulago angulata and fruits of Prangos asperula were extracted with n-hexane, using a soxhlet apparatus. The solvents were evaporated under reduced pressure. Column chromatography and crystallization process resulted to isolation of three prenylated coumarins. (1)H-nuclear magnetic resonance, electron ionization Mass and Infrared spectra were used for elucidation of isolated compounds. Leishmanicidal activity of isolated coumarins was assessed on Leishmania major strain (MRHO/IR/75/ER) for the first time. Suberosin epoxide and suberosin were isolated from aerial parts of F. angulata and osthol was extracted from grounded fruits of P. asperula. Osthol showed a significant antileishmanial effect on promastigotes in early hours of exposure with IC50 of 14.40 µg/mL but suberosin epoxide showed only a weak antileishmanial activity. IC50 of osthol and suberosin epoxide after 48 h were 10.79 and 54.0 µg/mL, respectively. Suberosin showed no remarkable effect in these concentrations. This is the first report on the pharmacological activity of suberosin epoxide. Substantial difference between efficacies of two isomers, osthol and suberosin remarks the importance of prenyl substituent location on C-8.
authors.affiliation: Department of Pharmacognosy and Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran.
authors.forename: Seyed Ebrahim
authors.initials: SE
authors.lastname: Sajjadi
authors.affiliation: Department of Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, I.R. Iran.
authors.forename: Abbas-Ali
authors.initials: AA
authors.lastname: Eskandarian
authors.affiliation: Pharmaceutical Sciences Research Center, School of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, I.R. Iran.
authors.forename: Yalda
authors.initials: Y
authors.lastname: Shokoohinia
authors.affiliation: Department of Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, I.R. Iran.
authors.forename: Hosein-Ali
authors.initials: HA
authors.lastname: Yousefi
authors.affiliation: Department of Biostatistics, Faculty of Health Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran.
authors.forename: Marjan
authors.initials: M
authors.lastname: Mansourian
authors.affiliation: Isfahan Pharmaceutical Sciences Research Center, Isfahan University of Medical Sciences, Isfahan, I.R. Iran.
authors.forename: Hasan
authors.initials: H
authors.lastname: Asgarian-Nasab
authors.affiliation: Isfahan Pharmaceutical Sciences Research Center, Isfahan University of Medical Sciences, Isfahan, I.R. Iran.
authors.forename: Negar
authors.initials: N
authors.lastname: Mohseni
keywords: Leishmania; Osthol; Prenylated coumarins; Suberosin; Suberosin epoxide