Tetrahedron Letters p. 5985 - 5988 (1989)
Update date:2022-08-17
Topics:
Kenji, Kawada
Moonsun, Kim
Watt, David S.
The regioselective reductive demethylation of the O-methyldiosphenol functionality in the A ring of quassin (3) with chlorotrimethylsilane and sodium iodide furnished picrasin B (1).Swern oxidation of 1 furnished Δ2-picrasin B (2), and O-methylation of 2 regenerated quassin (3).
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