Flavonoidy – hlavné obsahové látky listov Holodiscus discolor (Pursh) Maxim.

Flavonoids – Main Constituents of the Leaves of Holodiscus discolor (Pursh) Maxim.

The paper deals with the isolation and identification of constituents of the leaves of Holodiscus discolor (Pursh) Maxim. (Rosaceae). Three flavonoid glycosides of flavonol type were isolated from the methanolic extract: kaempferol–3–O–rhamnoside, quercetin–3–O–glucoside (isoquercitrin) and quercetin–3–O–rhamnoside (quercitrin). Isolates were identified by physical-chemical data, by comparison with authentic samples and literature data. The above-mentioned compounds were isolated from Holodiscus discolor (Pursh) Maxim. for the first time.

Key words:
Holodiscus discolor (Pursh) Maxim. – Rosaceae – flavonoid glycosides

Autoři: M. Haladová; E. Eisenreichová; M. Mrižová; D. Grančai; K. Ubik ¹
Působiště autorů: Univerzita Komenského v Bratislave, Farmaceutická fakulta, Katedra farmakognózie a botaniky ; Ústav organické chemie a biochemie AV ČR, Praha ¹
Vyšlo v časopise: Čes. slov. Farm., 2006; 55, 242-244
Kategorie: Původní práce

Souhrn

Práca sa zaoberá izoláciou a identifikáciou flavonoidov prítomných v listoch Holodiscus discolor (Pursh) Maxim. (Rosaceae). Z metanolového extraktu boli izolované tri flavonoidové glykozidy flavonolového typu: kempferol–3–O–ramnozid, kvercetín–3–O–glukozid (izokvercitrín) a kvercetín–3–O–ramnozid (kvercitrín), ktoré boli identifikované pomocou fyzikálno-chemických metód, porovnaním so štandardmi a literatúrou. Z rastlinného druhu Holodiscus discolor (Pursh) Maxim. boli izolované prvýkrát.

Klúčové slová:
Holodiscus discolor (Pursh) Maxim. – Rosaceae – flavonoidové glykozidy