Fritillarizine, a new Fritillaria alkaloid isolated from the aerial part of mature Fritillaria verticillata.

Fritillarizine, a new Fritillaria alkaloid isolated from the aerial part of mature Fritillaria verticillata. Fritillarizine, a new Fritillaria alkaloid isolated from the aerial part of mature Fritillaria verticillata. Isobaimonidine, a new Fritillaria alkaloid from the aerial part of Fritillaria verticillata. A new veratramine alkaloid from the bulbs of Fritillaria hupehensis Isosteroidal alkaloids from the bulbs of Fritillaria tortifolia Camtschatcanidine, an alkaloid from Fritillaria camtschatcensis Alkaloids from Fritillaria Hupehensis Tortifoline, a novel (20S, 22R)-5.ALPHA.-cevanine alkaloid from Fritillaria tortifolia. Tortifoline, a novel (20S, 22R)-5.ALPHA.-cevanine alkaloid from Fritillaria tortifolia. A novel steroidal alkaloid from Fritillaria shuchengensis