"4" . . . . . "Journal of Natural Products" . . "7"^^ . "Twelve lupane, 18alpha-oleanane, and des-E-lupane derivatives, extracted from natural sources or synthesized from betulinic acid and betulin, were used for preparation of triterpenic pyrazines and benzopyrazines. The synthesized compounds were tested for cytotoxicity against a variety of cancer cell lines." . . . "Hajduch, M." . "455861" . "526;532" . "Triterpenoid pyrazines and benzopyrazines with cytotoxic activity"@en . "Urban, Milan" . . "RIV/61388963:_____/07:00084714" . . . "Triterpenoid pyrazines and benzopyrazines with cytotoxic activity" . . "70" . "Triterpenoidn\u00ED pyraziny a benzopyraziny s cytotoxickou aktivitou"@cs . . "2"^^ . "Triterpenoid pyrazines and benzopyrazines with cytotoxic activity"@en . "Triterpenoidn\u00ED pyraziny a benzopyraziny s cytotoxickou aktivitou"@cs . . "Dvan\u00E1ct lupanov\u00FDch, 18alfa-oleananov\u00FDch a des-E-lupanov\u00FDch deriv\u00E1t\u016F, extrahovan\u00FDch z p\u0159\u00EDrodn\u00EDch zdroj\u016F nebo syntetizovan\u00FDch z botulinov\u00E9 kyseliny a betulinu, bylo pou\u017Eito pro p\u0159\u00EDpravu triterpenick\u00FDch pyrazin\u016F a benzopyrazin\u016F. Syntetizovan\u00E9 slou\u010Deniny byly testov\u00E1ny na cytotoxicitu proti r\u016Fzn\u00FDm n\u00E1dorov\u00FDm lini\u00EDm."@cs . . "\u0160arek, J." . . . . . "[FA13B51BE4DD]" . "5"^^ . "RIV/61388963:_____/07:00084714!RIV08-AV0-61388963" . . "Triterpenoid pyrazines and benzopyrazines with cytotoxic activity" . . . . . "Twelve lupane, 18alpha-oleanane, and des-E-lupane derivatives, extracted from natural sources or synthesized from betulinic acid and betulin, were used for preparation of triterpenic pyrazines and benzopyrazines. The synthesized compounds were tested for cytotoxicity against a variety of cancer cell lines."@en . "Ti\u0161lerov\u00E1, I." . "Kvasnica, Miroslav" . "triterpenoid; pyrazine; cytotoxicity; betulin"@en . "P(FT-TA/027), P(LC06070), P(LC07017), Z(AV0Z40550506), Z(MSM0021620857), Z(MSM6198959216)" . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "0163-3864" .