In the present study,17 flavonoids,including 9 prenylated isoflavones,4 isoflavones,3 flavanones and 1 flavone,were isolated from the twigs and leaves of Erythrina variegata.By NMR spectroscopic means and comparision ...In the present study,17 flavonoids,including 9 prenylated isoflavones,4 isoflavones,3 flavanones and 1 flavone,were isolated from the twigs and leaves of Erythrina variegata.By NMR spectroscopic means and comparision with the data in the leteratures,their structures were elucidated to be euchrenone b10(1),senegalensin(2),erythrinin C(3),scandenone(4),osajin(5),alpinum isoflavone(6),isoerysenegalensein E(7),erysenegalensein E(8),diprenylgenistein(9),abyssinone V(10),abyssinone V 4′-methyl ether(11),4′,7-dihydroxyflavanone(12),3′,5,7-trihydroxy-4′-methoxyisoflavone(13),2′,4′,5,7-tetrahydroxyisoflavone(14),genistein(15),daidzein(16),and apigenin(17).Except for compounds 1,4-7,and 9-10,other compounds were isolated from E.variegata for the first time.展开更多
基金National Natural Science Foundation of China(Grant No.32060099).
文摘In the present study,17 flavonoids,including 9 prenylated isoflavones,4 isoflavones,3 flavanones and 1 flavone,were isolated from the twigs and leaves of Erythrina variegata.By NMR spectroscopic means and comparision with the data in the leteratures,their structures were elucidated to be euchrenone b10(1),senegalensin(2),erythrinin C(3),scandenone(4),osajin(5),alpinum isoflavone(6),isoerysenegalensein E(7),erysenegalensein E(8),diprenylgenistein(9),abyssinone V(10),abyssinone V 4′-methyl ether(11),4′,7-dihydroxyflavanone(12),3′,5,7-trihydroxy-4′-methoxyisoflavone(13),2′,4′,5,7-tetrahydroxyisoflavone(14),genistein(15),daidzein(16),and apigenin(17).Except for compounds 1,4-7,and 9-10,other compounds were isolated from E.variegata for the first time.
