alexa STAT-3 inhibitory bisabolanes from Carthamus glaucus.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Molecular and Genetic Medicine

Author(s): TaglialatelaScafati O, Pollastro F, Cicione L, Chianese G, Bellido ML,

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Abstract Apart from a large amount (ca. 2.0\%) of α-bisabolol β-D-fucopyranoside (2a), the aerial parts of the Mediterranean weed Carthamus glaucus afforded an unusual triglyceride (E-2-crotonyl-1,3-distearolylglycerol, 7), two lipophilic flavonoids (6a,b), and a series of bisabolane fucopyranosides variously acylated on the sugar moiety (2b-e) or oxidized on the terpenoid core (3, 4a,b, 5a,b). The fucopyranoside 2a is more soluble in polar media and more versatile in terms of formulation than its aglycone [(-)-α-bisabolol, 1], an anti-inflammatory cosmetic ingredient in current short supply in its natural form. A comparative investigation of the activity of α-bisabolol (1a), the fucopyranoside 2a, and its senecioate 2b on transcription factors involved in inflammation and cancer pathways (NF-κB and STAT-3) showed only marginal activity on NF-κB inhibition for all compounds, while STAT-3 was inhibited potently by the fucoside 2a and, to a lesser extent, also by α-bisabolol. These observations qualify 2a as an easily available compound, both as an apoptotic lead structure and as a potential alternative to natural α-bisabolol (1) for pharmaceutical and/or cosmetic development. This article was published in J Nat Prod and referenced in Journal of Molecular and Genetic Medicine

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