ABSTRACT
A novel series of 1;2;5-trisubstituted benzimidazole derivatives was synthesized by coupling 2-mercapto-5-methoxybenzimidazol-1-acetic acid with several amino acid methyl ester hydrochlorides/dipeptides/tripeptides using dicyclohexylcarbodiimide (DCC) as the coupling agent and triethylamine (TEA) as the base. All newly synthesized compounds were characterized by spectral as well as elemental analysis and evaluated for their biological potential. Compounds 5; 8 and 12 were found to exhibit potent anthelmintic activity against M. konkanensis; P. corethruses and Eudrilus sp. in comparison to standard drug - mebendazole. Moreover; compounds 7; 9 and 13 possessed potent antifungal activity against C. albicans and compounds 4 and 10 displayed good activity against pathogenic bacteria P. aeruginosa. Gram negative bacteria were found to be more sensitive in comparison to gram positive bacteria towards the newly synthesized benzimidazolopeptide analogs
Subject(s)
Amino Acids , Anthelmintics , Anti-Infective Agents , Arthrodermataceae , BenzimidazolesABSTRACT
The amino acid sequence of a glucose/mannose specific lectin from the seeds of Dioclea reflexa (Dioclea reflexa agglutinin II; DRA-II) was determined by sequential Edman analyses of the intact subunit; and of the peptides derived from the protein by enzymatic digestion with trypsin. This sequence was found to be very similar to those of the lectins from other Dioclea species; Dioclea grandiflora and Dioclea lehmanii; and also the lectin from Canavalia ensiformis (Con A). Comparison of these amino acid sequences showed that a high degree of homology exists among these proteins
Subject(s)
Amino Acids , Dioclea , Fabaceae , Lectins , Plant ProteinsABSTRACT
L'etude chromatographique des acides amines urinaires chez l'enfant malnutri a abouti aux constatations suivantes : le tryptophane pourrait etre considere comme un indicateur biologique de la malnutrition proteino-calorifique (M.P.C.); la triade tryptophane-isoleucine-arginine semble caracteriser les MPC et egalement les cas de deces dus a cette affection