Sinteza i anthelmintičko djelovanje novih 2-supstituiranih-4,5-difenil imidazola

A series of 2-substituted-4,5-diphenyl imidazoles 1a-j were synthesized by refluxing benzil with different substituted aldehydes in the presence of ammonium acetate and glacial acetic acid. Structures of the synthesized compounds were confirmed on the basis of IR, 1H NMR and mass spectral data. Compounds 1a-j were screened for anthelmintic activity. Test results revealed that compounds showed paralysis time of 0.24 to 1.54 s and death time of 0.39 to 4.40 s while the standard drugs albendazole and piperazine citrate showed paralysis time of 0.54 and 0.58 s and death time of 2.16 and 2.47 s, respectively, at the same concentration of 1 % (m/V). Five compounds, 2-[2-hydroxyphenyl]-4,5-diphenyl imidazole (1b), 2-[3-methoxyphenyl]-4,5-diphenyl imidazole (1c), 2-[2-phenylethenyl]-4,5-diphenyl imidazole (1e), 2-[4-fluorophenyl]-4,5-diphenyl imidazole (1g) and 2-[3-nitrophenyl]-4,5-diphenyl imidazole (1h) showed significant anthelmintic activity compared to the standard drugs.Refluksiranjem benzila s različitim supstituiranim aldehidima u prisutnosti amonijeva acetata i ledene octene kiseline sintetizirana je serija 2-supstituiranih-4,5-difenil imidazola (1a-j). Strukture sintetiziranih spojeva potvrđene su IR, 1H NMR i masenom spektroskopijom. U testovima na anthelmintičko djelovanje određeno je vrijeme paralize 0,24 do 1,54 min i vrijeme smrti 0,39 do 4,40 min, dok standarni lijekovi albendazol i piperazin citrat imaju vrijeme paralize 0,54 i 0,58 min, a vrijeme smrti 2,16, odnosno 2,47 min pri istim koncentracijama (1 % m/V). Pet spojeva, 2-[2-hidroksifenil]-4,5-difenil imidazol (1b), 2-[3-metoksifenil]-4,5-difenil imidazol (1c), 2-[2-feniletenil]-4,5-difenil imidazol (1e), 2-[4-fluorofenil]-4,5-difenil imidazol (1g) i 2-[3-nitrofenil]-4,5-difenil imidazol (1h) pokazuju značajno anthelmintičko djelovanje u odnosnu na standardne lijekove

ANTI-DIARRHOEAL ACTIVITY OF CARDIOSPERMUM HALICACABUM AND DODONEA VISCOSA

Objective: The present study to carry out the anti-diarrhoeal activity of leaf extracts of Cardiospermum halicacabum and Dodonea viscosa in different experimental models of diarrhoea. Methods: The acute toxicity of the extracts were determined, LD50was calculated according to the Up and down method†following OECD guidelines No. 425 of CPCSEA. The anti-diarrhoeal potential was assessed by castor oil induced diarrhea. Gastro-intestinal motility test and Prostaglandin-E2 induced enteropooling in experimental animals. Results: The alcoholic and aqueous extracts of Cardiospermum halicacabum and Dodonea viscosa have exhibited the dose dependant antidiarrhoeal activity in all the three experimental models by reducing the frequency of defecation as well as total weight of wet faeces, decreased the propulsion of charcoal meal through the gastrointestinal tract and also decrease in the oedema volume in the intestine (intestinal secretion) of the drug treated animals with the respective models of diarrhea. Conclusion: Cardiospermum halicacabum and Dodonea viscosa shows to have a potential value for the development of a phytomedicine for diarrhoea. Further comprehensive chemical and pharmacological investigations are needed to elucidate the exact mechanism accountable for the exhibited activity

<b style="">Wound healing activity of <i>Cordia dichotoma</i> Forst. f. fruits</b><b style=""></b>

99-102The extraction of fruits of Cordia dichotoma Forst. f. was carried out using ethanol. This extract was further fractionated using petroleum ether (40-60%), solvent ether, ethyl acetate, butanol and butanone in succession. These fractions were screened for wound healing activity using three different models, viz. excision, incision and dead space wound models on either sex of albino rats of Wistar strain. All the fractions showed significant (P<0.001) activity on the chosen models

Phytochemical investigation and diuretic activity of Cyclea peltata leaf extracts

Ayurvedic system of medicine is well known for treating renal problems. A vast number of medicinal plants mentioned in Ayurvedic system of medicine are known to possess diuretic properties. Present study reports the preliminary phytochemical investigation of petroleum ether and ethanolic extracts of Cyclea peltata and their diuretic activity. Preliminary phytochemical screening reveals the presence of phytosterols and alkaloids as major phytoconstituents in petroleum ether extract. The ethanolic extract showed the presence of alkaloids, flavonoids, tannins, diterpenes and saponins. Pharmacological investigation revealed that ethanolic extract of C. peltata leaves possessed significant diuretic activity in a given dose of 200 and 300 mg/kg body weight (Diuretic action 1.7 and 2.6, respectively). Where as petroleum ether extract has shown moderate diuresis at a dose of 300 mg/kg body weight (Diuretic action 1.1). The present study justifies the use of C. peltata in the Ayurvedic system of medicine as a diuretic drug