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Abstract Phytochemical investigation on the aerial parts of Uncaria perrottetii led to the isolation of three pentacyclic oxindole alkaloids uncarine A or isoformosanine ( 1 ), uncarine E or isopteropodine… Click to show full abstract
Abstract Phytochemical investigation on the aerial parts of Uncaria perrottetii led to the isolation of three pentacyclic oxindole alkaloids uncarine A or isoformosanine ( 1 ), uncarine E or isopteropodine ( 2 ), and rauniticine- allo -oxindole A ( 3 ). Five oxindole alkaloids, isomitraphylline ( 4 ), mitraphylline ( 5 ), uncarine B or formosanine ( 6 ), uncarine F ( 7 ), corynoxine ( 8 ), and uncarine D or speciophylline ( 9 ), were isolated from the leaves of Uncaria lanosa f. philippinensis . Their structures were determined by spectroscopic techniques and in comparison with the literature data. These compounds proved to be important chemotaxonomic markers in the genus Uncaria .
Journal Title: Journal of King Saud University - Science
Year Published: 2017
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