Flavones and phenylpropenoids in the surface exudate of Psiadia punctulata.

Citation:
Yenesew A., and B.F. Juma MWJOPG. "Flavones and phenylpropenoids in the surface exudate of Psiadia punctulata." Phytochemistry. 2001;57 :571-574.

Abstract:

Three flavones, 5,7-dihydroxy-2′,3′,4′,5′-tetramethoxyflavone, 5,4′-dihydroxy-7,2′,3′,5′-tetramethoxyflavone, and 5,7,4′-trihydroxy-2′,3′,5′ -trimethoxyflavone were isolated from the leaf exudate of Psiadia punctulata, together with the previously reported 5-hydroxy-7,2′,3′,4′,5′-pentamethoxyflavone and 5,7,3′-trihydroxy-2′,4′,5′-trimethoxyflavone. The two phenylpropenoids, Z-docosyl-p-coumarate and E-docosyl-p-coumarate were also isolated. The structures were determined on the basis of spectroscopic evidence.

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