93772-19-1Relevant academic research and scientific papers
Synthesis of some 3-arylisochromene, 3-arilisoquinoline, 6H-5-oxachrysene, and benzophenanthridine analogs of some naturally occuring alkaloids
Carty, Antoine,Elliott, I. Wesley,Lenior, Grefonda M.
, p. 2435 - 2439 (2007/10/02)
A 2-benzopyrylium perchlorate 6 was prepared from the keto ester 5.Reduction of 6 followed by dilute HCl affords 6H-5-oxachrysene 10.Reaction of 6 with ammonia solution gives the isoquinoline acid 13.By a short series of steps 13 is cyclized to the dihydrobenzophenanthridine 16.
