Objectives: This study aims to isolate and identify valuable chemicals and pharmaceuticals from the waste of wood (Pinus sylvestris L.) industry and to determine their biological value. Methods: Chromatographic technique was used to isolate compounds from the waste. The chemical identity of the isolated compounds were evidenced by different spectroscopic analyses as well as comparative studies of reported data. The microbial transformed product of pinosylvin mono methyl ether was quantitatively determined using fluorimetric method. All the isolated compounds were tested for their antitoxoplasmosis activity (in vitro) against Toxoplasma gondii. Findings/ Novelty: Nine compounds were isolated and identified including three diterpenes : (1β -hydroxy dehydroabietic acid, 15-hydroxy dehydroabietic acid and Methyl-15-hydroxy dehydroabiet-18-ate) ; two aromatic aldehydes (coniferaldhyde and 3-hydroxy, 5-methoxy benzaldhyde) ; two stilbene derivatives; (Pinosylvin and Pinosylvin mono methyl ether) ; a flavan: (Pinocembrin) and a phytosterol (β -sitosterol). For the first time, the fluorimetric method was used for quantitative determination of the novel metabolite produced, E-Pinosylvin mono methyl ether 5-O-β -D-glucopyranoside, from the microbial biotransformation technique. All isolated compounds showed variable antitoxopasmosis activity, carried out for the first time, against T. gondii according to their % mortality and recorded EC 50 .