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Roxoperone is a bioactive chemical.

D-DOPA is an enantiomer of the dopamine precursor L-DOPA . It can be converted to L-DOPAviasequential oxidation and transamination, which are mediated by D-amino acid oxidase (DAAO) and DOPA transaminase, respectively, in rat kidney homogenates.1It reduces the number of dopaminergic neurons in primary rat embryonic mesencephalic cultures in a concentration-dependent manner.2Intraventricular administration of D-DOPA (200 μg/animal) increases striatal dopamine levels in rats.3D-DOPA (20 mg/kg, i.p.) induces contralateral turns in a rat model of Parkinson's disease induced by 6-OHDA .4 1.Wu, M., Zhou, X.-J., Konno, R., et al.D-dopa is unidirectionally converted to L-dopa by D-amino acid oxidase, followed by dopa transaminaseClin. Exp. Pharmacol. Physiol.33(11)1042-1046(2006) 2.Ling, Z.-D., Pieri, S.C., and Carvey, P.M.Comparison of the neurotoxicity of dihydroxyphenylalanine stereoisomers in cultured dopamine neuronsClin. Neuropharmacol.19(4)360-365(1996) 3.Karoum, F., Freed, W.J., Chuang, L.-W., et al.D-dopa and L-dopa similarly elevate brain dopamine and produce turning behavior in ratsBrain Res.440(1)190-194(1988) 4.Moses, J., Siddiqui, A., and Silverman, P.B.Sodium benzoate differentially blocks circling induced by D-and L-dopa in the hemi-parkinsonian ratNeurosci. Lett.218(3)145-148(1996)

Pyrenocine A is a fungal metabolite that has been found inP. terrestrisand has diverse biological activities.1It inhibits the asexual spore germination of the plant pathogenic fungiF. oxysporum,F. solani,M. hiemalis, andR. stolonifer(EC50s = 14, 20, 20, and 25 μg/ml, respectively). Pyrenocine A is active againstB. subtilis,S. aureus, andE. coli(IC50s = 30, 45, and 200 μg/ml, respectively). It inhibits onion seedling elongation (EC50= 4 μg/ml). Pyrenocine A is also a phytotoxin that inhibits lettuce seed germination and rice seedling elongation.2,3 1.Sparace, S.A., Reeleder, R.D., and Khanizadeh, S.Antibiotic activity of the pyrenocinesCan. J. Microbiol.33(4)327-330(1987) 2.Sato, H., Konoma, K., and Sakamura, S.Phytotoxins produced by onion pink root fungus, Pyrenochaeta terrestrisAgric. BioI. Chem.43(11)2409-2411(1979) 3.Sato, H., Konoma, K., Sakamura, S., et al.X-Ray crystal structure of pyrenocine A, a phytotoxin from Pyrenochaeta terrestrisAgric. BioI. Chem.45(3)795-797(1981)