Chemical and Pharmaceutical Bulletin p. 445 - 452 (1993)
Update date:2022-09-26
Topics:
Kato
Fujita
Fujimura
Kawashima
Nishiyama
Citrusinine-I (1), a naturally occurring acridone alkaloid with potent antiviral activity, was synthesized for the first time, via a route involving Ullmann reaction, cyclization, and selective demethylation at the 1-position with boron trifluoride etherate and lithium bromide. 1,5,6-Trihydroxy-3-methoxy-9(10H)-acridone (2a) and 1,5,6-trihydroxy-3-methoxy-10-methyl-9(10H)-acridone (2b) were also synthesized.
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