June 2003 - 10 articles
The separation and quantification of the flavonoids occurring in Achillea nobilis L. by a CE-method is described. Using 20 mM sodium borate at pH 9.5 with 20 % of methanol as buffer, the flavonoids were sufficiently separated within 11 minutes. Kaemp...
Tussilagine, isotussilagine, neo-tussilagine and neo-isotussilagine were isolated from Ligularia sibirica whereas Tephroseris integrifolia was found to contain senkirkine, otosenine, hydroxysenkirkine and 07-angeloylheliotridine. The structures were...
An HPLC method is introduced for the precise quantitative determination of the anti-inflammatory active faradiol esters from marigold flowers and extracts. After a prepurification the HPLC analysis allows the proof of the quality of marigold flowers...
Dichloromethane extracts of a Brazilian bark assigned as Anemopaegma mirandum contained four tropane alkaloids. MS-, UV-, IR-, 1H NMR-data and specific optical rotation allowed the identification of catuabin C and its 7-exo-hydroxy-20-methyl-derivati...
The aim of this study was to formulate and evaluate microsphere based depot type parenteral sustained release formulation of diclofenac sodium (DFS). Drug was formulated in the form of microspheres, using varying proportion of ethylcellulose (EC) as...
In this investigation, the isolate of Pseudomonas aeruginosa from cystic fibrosis was highly resistant to β-lactarns and β-lactamase inhibitors. The resistant determinants of clinical isolate to imipenem, ceftazidime, ceftriaxone and cefepime were co...
The complexes of Ephedrine with Nickel, Zinc and Cadmium ions have been investigated spectrophotometricalfy using the method of corresponding solutions [I-3] and pH-metrically using Irving and Rossoti technique [4] Two compositions were observed spec...
Intensive efforts are underway worldwide to develop chemotherapeutic agents effective against HIV, the etiological agent of AIDS. In this view, it was designed to synthesize and investigate the anti-HIV activity of some new 2-(benzoxazol-2-ylamino)-3...
To prepare required thiolactarns. initial experiments were done with the lactarns 1 - 3 and Lawessol reagent. However in preliminary trials. treatment of the compounds failed to give the desired molecules. Modification of the reaction conditions. pat...
Cyclic carbonylation of hydroxyureas 3 with 1,1'-carbonyldiimidazole gave 3-(3,5-dioxo-[1,2,4]oxadiazolidin-2yl)propylphosphonic acid diethyl esters 4 which were converted into the corresponding phosphonic acids 5 with bromotrimethylsilane.
Get Alerted
Add your email address to receive forthcoming issues of this journal.
