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Beilstein J. Org. Chem. 2022, 18, 1589–1595, doi:10.3762/bjoc.18.169
Graphical Abstract
Scheme 1: Classification of benzo[c]phenanthridine alkaloids.
Scheme 2: Representative synthetic strategies for macarpine (1).
Scheme 3: Retrosynthetic analysis of marcarpine precursor 12 for a partial synthesis.
Scheme 4: Syntheses of precursors 5 and 8.
Scheme 5: Synthesis of enol silyl ether 10.
Scheme 6: Formal total synthesis of macarpine (1).