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Minor methylated pyranoamentoflavones from Calophyllum venulosum
1Department of Chemistry, The National University of Singapore, Singapore.
Natural Product Letters
|February 14, 2002
Abstract:
Two new biflavonoids, pyranoamentoflavone 7-methyl ether (1) and pyranoamentoflavone 4'-methyl ether (2), have been isolated from the leaves of Calophyllum venulosum. The structures of these two new compounds were elucidated by spectroscopic data.