qasem asgari dept. of parasitology and mycology, shiraz university of medical sciences, shiraz, iran. hossein keshavarz dept. of parasitology and mycology, tehran university of medical sciences, tehran, iran. mostafa rezaeian dept. of parasitology and mycology, tehran university of medical sciences, tehran, iran. hossein sadeghpour medicinal and natural products chemistry research center, shiraz university of medical sciences, shiraz, iran and dept. of medicinal chemistry of pharmacy, shiraz university of medical sciences, shiraz, iran. ramin miri medicinal and natural products chemistry research center, shiraz university of medical sciences, shiraz, iran and dept. of medicinal chemistry of pharmacy, shiraz university of medical sciences, shiraz, iran. mohammad hossein motazedian dept. of parasitology and mycology, shiraz university of medical sciences, shiraz, iran.