An oxazine ring was annelated to benzopyran-4-one and benzopyran-2-one cores by reacting 7-hydroxyisoflavones and 7-hydroxycoumarins with lupinylamine and formalin. The new derivatives 9,10-dihydro4H,8 H-chromeno[8,7-e][1,3]oxazin-4-one and 9,10-dihydro-2 H,8 H-chromeno[8,7-e][1,3]oxazin-2-one containing a lupinine moiety in the 9-position were prepared.
7-hydroxyisoflavones and 7-hydroxycoumarins with lupinylamine and formalin reactated an oxazine ring to benzopyran-4-one and benzopyran-2-one cores.制备出了 9,10-二
氢-4H,8 H-色
烯并[8,7-e][1,3]恶嗪-4-
酮和 9,10-二
氢-2 H,8 H-色
烯并[8,7-e][1,3]恶嗪-2-
酮的新衍
生物,其 9 位含有
羽扇豆碱分子。