Plumbago Plumbagin

Plumbago zeylanica L. Bai Hua Teng (Ceylon leadwort) (root) Plumbagin, glucose, fructose, protease, invertase, plumbagin, naphthaquinone, slliptinone, 3-chloroplumbagin.50 450 Bactericidal, antifertility. 

The identification of plumbagine (42), however, in Triphyophyllum peltatum 31), as well as in Ancistrocladus abbreviatus Airy Shaw 46), co-occurring with the alkaloids, can be interpreted as a strong indirect indication of a polyacetate pathway in the plants. By 1972, Zenk and co-workers had already found that the naphthoquinone 42 is formed from acetate units, albeit in Drosera and Plumbago species 47). A joint biosynthesis of plumbagine (42) and both molecular moieties, for example, of the alkaloid 23 from the same monocyclic precursor 32 seems evident (Scheme 6). 

The naphthoquinones plumbagin (19) from Plumbago spp. (Plumbaginaceae) and 7-methyljuglone (R = CH3) (20) from Drosera spp. (Droseraceae) are derived from six C2... 

Plumbagin (2-methyljuglone) (6) (and probably 7-meth-yljuglone) in Plumbago (Plumbaginaceae) and Drosera (Droseraceae) species is derived from acetate. However, at least in the family Droseraceae, the acetate is derived from L-tyrosine (Haslam, 1986). 

Plumbagin (5-Hydroxy-3-methyl-l, 4-N.) 78 yellow Roots of Plumbago species... 

An interesting member of the hexaketide family is plumbagin, a naphthoquinone derivative, formed in higher plants of the genus Plumbago. 

Plumbago pl3m- ba-( )go n [L plumbagin-, plumbago galena, fr. plumbum] (1747) Another name for graphite. 

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