N-(3-oxobutyl)cytisine: A new lupin alkaloid from eChinosophora koreensis

N-(3-oxobutyl)cytisine: A new lupin alkaloid from eChinosophora koreensis (−)-N-ethylcytisine, a lupin alkaloid from the flowers of Echinosophora koreensis Lupin alkaloids from flowers of Echinosophora koreensis (−)-12-Cytisineacetic acid, a new lupin alkaloid in Euchresta japonica (+)-11-oxocytisine, a lupin alkaloid from leaves of sophora secundiflora (−)-3β-13α-dihydroxylupanine from cytisus scoparius Lupin alkaloids fromSophora exigua Cytisine-12-carboxy-ethylester, a quinolizidine alkaloid from Laburnum watereri and its occurrence in the leguminosae Lupin Alkaloids from Chinese Maackia Hupehensis. N-Formylcytisine: A new alkaloid from Thermopsis chinensis