7-Hydroxyechinozolinone, a New Alkaloid from the Flowers of Echinops echinatus

7-Hydroxyechinozolinone, a New Alkaloid from the Flowers of Echinops echinatus 7-Hydroxyechinozolinone, a New Alkaloid from the Flowers of Echinops echinatus Echinozolinone, an alkaloid from Echinops echinatus☆ Two new quinoline glycoalkaloids from Echinops gmelinii Pyrrolizidine alkaloids from Echium pininana (−)-N-ethylcytisine, a lupin alkaloid from the flowers of Echinosophora koreensis The alkaloids of Echium plantagineum L Lupin alkaloids from flowers of Echinosophora koreensis Pyrrolizidine and tetrahydroisoquinoline alkaloids from Echium humile (+)-(14β)-14-Ethylmatridin-15-one, a New Quinolizidine Alkaloid from the Poisonous PlantOxytropis ochrocephalaB<scp>unge</scp>