cytellin and plumbagin

Plumbago scandens L. is a Brazilian tropical/subtropical species that occurs along the coast. Chemically it is mainly represented by naphthoquinones, flavonoids, terpenoids and steroids. The aim of the present work is to study quantitative changes in the root metabolic production of Plumbago scandens during different physiologic developmental stages relative to floration. The results indicated the presence of four substances in the extracts: plumbagin, epi-isoshinanolone, palmitic acid and sitosterol, independent on developmental stage. The naphthoquinone plumbagin has always showed to be the major component of all extracts. Naphthoquinones exhibited their highest content during floration, while the content of the two others components decreased during this stage, revealing an inverse profile. The chemical composition changed depending on the plant requirements.

Topics: Chromatography, Gas; Naphthoquinones; Palmitic Acid; Plant Roots; Plumbaginaceae; Sitosterols; Tetrahydronaphthalenes

To investigate the chemical constituents of the aerial parts of Plumbago zeylanica Linn.. The constituents of the EtOAc-soluble portion in the 95% ethanol extract were isolated and purified by means of chromatography. Compounds were identified by their physical characteristics and spectral features.. Nine compounds were isolated as plumbagin (I), isoshinanolone (II), plumbagic acid (III), beta-sitosterol (IV), 4-hydroxybenzaldehyde (V), trans-cinnamic acid (VI), vanillic acid (VII), 2, 5-dimethyl-7-hydroxychromone (VIII), indole-3-carboxaldehyde (IX).. Compounds V, VII, VIII and IX were isolated for the first time from Plumbago Linn.

Topics: Benzaldehydes; Cinnamates; Indoles; Magnetic Resonance Spectroscopy; Molecular Structure; Naphthoquinones; Plant Components, Aerial; Plants, Medicinal; Plumbaginaceae; Sitosterols; Tetrahydronaphthalenes; Vanillic Acid