New Canthin-6-one Alkaloids fromQuassia amara

Planta Medica
1990.0

Abstract

From the wood of QUASSIA AMARA L. (Simarubaceae) two new canthin-6-one alkaloids have been isolated and their structures determined as 3-methyl-4-methoxy-5-hydroxycanthin-2,6-dione ( 1) and 4-methoxy-5-hydroxycanthin-6-one 3-, N-oxide ( 2) by spectroscopic and chemical methods. 3-Methylcanthin-5,6-dione ( 3) has been also isolated and identified for the first time from this source.

DOI： 10.1055/s-2006-960928

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