摘要:
AbstractBulbocapnine methyl ether (2), on treatment with boron halides, affords the aporphine‐1,2‐diol (3), the novel aporphines 5 and 6 or the phenanthrene derivative 11 depending on the reaction conditions. 3 can be further transformed into corydine methyl ether (4); 6 has been converted to corytuberine (8). Similarly, dehydrobulbocapnine methyl ether 9 was converted to 10.