The goal of this investigation was to evaluate the in vitro and in vivo efficiency of Raphanus raphanistrum extracts against Fusarium and Pythiaceae species associated with apple and peach seedling decline in Tunisian nurseries. A chemical composition of organic extracts was accomplished using liquid chromatography, thin layer chromatography, and gas chromatography analysis. The in vitro test of three aqueous extract doses of R. raphanistrum against some apple and peach decline agents showed its efficacy in reducing mycelia growth. The in vivo assay of fine powder of this plant on peach seedlings revealed that treatment 8-weeks before the inoculation and planting was more efficient than the treatment before one week. This experiment revealed that the root weight of peach seedlings inoculated by F. oxysporum was improved to 207.29%. For apple seedlings, the treatment 8 weeks before the inoculation and plantation was more efficient than the treatment one week before; it reduced the root browning index. The study of R. raphanistrum chemical composition and its efficiency showed that the glucosinolates products: nitrile (4-Hydroxy-3-(4-methylphenylthio) butane nitrile, benzene acetonitrile, 4-fluoro,butane nitrile, 4-hydroxy-3-[(4-methylphenyl) thio] nitrile), and thiocyanate molecules (thiocyanic acid, ethyle) are responsible for the anti-fungal activities.

Benzodiazepines are pharmaceutically important synthetic materials. Reaction of the 4-(2-hydroxyphenyl)-1,5-benzodiazepin-2-one with 2-diazopropane (DAP) gave a mixture of the 2-isopropylether of 4-(2-hydroxyphenyl)-3H-1,5-benzodiazepine and 1-isopropyl-4-(2-hydroxyphenyl)-3H-1,5-benzodiazepin-2-one. Whilst diphenyldiazomethane (DPDM) gave 1-benzhydryl-4-(2-hydroxyphenyl)-3H-1,5-benzodiazepin-2-one. Reaction of the corresponding thione with DAP led to the 2-isopropylthioether of 4-(2-hydroxyphenyl)-3H-1,5-benzodiazepine and 1-isopropyl-4-(2-hydroxyphenyl)-1,5-benzodiazepine-2-thione while the reaction with DPDM gave the 2-benzhydrylthioether of 4-(2-hydroxyphenyl)-3H-1,5-benzodiazepine. The characterisation of these prepared - N, - O and - S alkylated benzodiazepines involved 1D and 2D-NMR techniques, mass spectrometry and elemental analysis.

The different behavior of 1,5‐benzodiazepines (I) and (V) during reaction with 2‐diazopropane and diphenyldiazomethane, resp., is studied.