Antimicrobial and -glucosidase inhibitory activities of chemical constituents from (Rubiaceae).

An aliphatic alkene namely pentapentacontene () was isolated for the first time from a natural source, , along with fourteen other compounds including nonacosanol (), tetratriacontanol (), octatriacontanol (), -sitosterol () and stigmasterol (), daucosanol (), ursolic acid (), uvaol (), 3,19,23,24-tetrahydroxyurs-12-en-28-oic acid (), lupenone (), oleanolic acid (), vanillin (), vanillic acid () and D-mannitol (). -glucosidase inhibitory assay revealed that MeOH and EtOAc extracts of leaves had the best activity with IC of 9.65 and 20.