ABSTRACT
The reaction of betulonic acid chloride with 4-amino-2,2,6,6-tetramethylpeperidine-1-oxyl, 3-amino-2,2,5,5-tetramethylpyrrolidine-1-oxyl and 3-aminomethyl-2,2,5,5-tetramethylpyrrolidine-1-oxyl gave corresponding triterpenoid amides. It was found that new derivatives exhibit cytotoxic activity against tumor cells CEM-13, U-937, MT-4. CCID50 value for most activity compound--N-[3-oxolup-20(29)-en-30-yl]-(2,2,6,6-tetramethylpiperidine-4-yl)-1-oxyl--was 5.7-33.1 microM.
Subject(s)
Amides/chemical synthesis , Oleanolic Acid/analogs & derivatives , Terpenes/chemical synthesis , Amides/chemistry , Amides/pharmacology , Antineoplastic Agents/chemical synthesis , Antineoplastic Agents/chemistry , Antineoplastic Agents/pharmacology , Cell Line, Tumor , Humans , Oleanolic Acid/chemical synthesis , Oleanolic Acid/chemistry , Oleanolic Acid/pharmacology , Spin Labels , Terpenes/chemistry , Terpenes/pharmacologyABSTRACT
Betulonic acid amides containing a nitroxyl radical moiety possess antiholestatic effects in mice. Introduction ofpiperidine nitroxide moiety into lupan core increases its hepatoprotective activity. Oral administration of piperidine nitroxide derivative in dose 50 mg/kg doesn't stimulate transplanted tumor growth and raises a lifespan of mice.