Synthetic Communications · 2003 · 18 citations · 15 references
Natural SciencesChemistryMedicinal ChemistryOrganic ChemistryOrganic Synthesis
Abstract An improved route has been devised which provides canthin-6-one in the highest yield from tryptamine to date. Tryptamine is converted to Nb -benzyltryptamine via reaction with benzoylchloride and reduction using LAH. Pictet-Spengler condensation with 2-ketoglutaric acid, removal of the protecting group by CTH, and aromatization with MnO2 affords canthin-6-one in 48% overall yield.
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Canthin-6-one alkaloids from Eurycoma longifolia
Katsuyoshi Mitsunaga, Kazuo Koike, Tomoko Tanaka et al. · Phytochemistry · 1994 · 54 citations