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Benzyne cyclization route to benzo[c]phenanthridine alkaloids. Synthesis of chelerythrine, decarine, and nitidine

Y. P. Gupta, T. Mohammad, S. Kessar, 1988 .

Regioselective mono-O-alkylation of same pyrocatechoxide dianions

Y. P. Gupta, T. Mohammad, S. Kessar, 1983 .