Atranorin, lichexanthone, and the (+)-usnic, diffractaic, divaricatic, perlatolic, psoromic, protocetraric, and norstictic acids isolated from the lichens Parmotrema dilatatum (VAIN.) HALE, Usnea subcavata MOTYKA, Usnea sp., Ramalina sp., Cladina confusa (SANT.) FOLMM. & AHTI, Dirinaria aspera HÄSÄNEN, and Parmotrema lichexanthonicum ELIASARO & ADLER were evaluated against UACC-62 and B16-F10 m...

introduction: antioxidants are compounds that eliminate free radicals, which reduce tissue damage and allow the organs and blood vessels to properly heal. in this research, the anticancer effect against mcf-7 and ht-29 cell lines, and antioxidant, antimicrobial and wound healing activities of the lichens extracts have been investigated. materials and methods: anticancer activity was assayed wit...

Lichens are symbiotic organisms composed of at least one fungal and algal species. They found in different environments around the world, even poles deserts. Some species can withstand extreme abiotic conditions, including radiation vacuum space. Their chemistry is mainly due to metabolism production several secondary metabolites with biological activity, which have been isolated an increasing ...

Current treatment of cutaneous leishmaniasis (CL) relies mainly on pentavalent antimonials salts and second-line drugs include pentamidine and amphotericin B, but these therapies have side effects and require parenteral administration. The aim of this work was to evaluate the topical formulations containing pentamidine isethionate (PI) in the experimental treatment of cutaneous leishmaniasis (C...

The development of new antibacterial compounds is an urgent issue to meet the evolution of resistivity of pathogenic bacteria against the available drugs. The objective of this study was to investigate the antibacterial compounds from the Antarctic lichen species Ramalina terebrata. A total of five compounds, usnic acid, usimine A, usimine B, usimine C, and ramalin, were isolated by bioactivity...

Dibenzofuran (DBF) are typical heterocyclic aromatic compounds (O-HETs), which can coexist with polycyclic hydrocarbons (PAHs) in combustion and pyrolysis conditions. In this review, Emphasis has already been placed on the reports synthesis of dibenzofuran derivatives possessing anti-bacterial activities. It is not a comprehensive discussion all such compounds, but instead intended to illustrat...