Gelselegine-gelsedine type bisindoles as well as the units from Gelsemium elegans with promoting proliferation of oral mucosa fibroblast cells
Phytochemistry(2024)
Abstract
Two undescribed bisindole alkaloids, gelseginedine A (1) and its rearranged gelseginedine B (2), and seven unreported gelselegine-type oxindole alkaloids (3–9) were isolated from the stems and leaves of Gelsemium elegans, together with five known alkaloids (10–14). Compounds 1 and 2 represented the first examples of gelselegine-gelsedine type alkaloids which bridged two units by a double bond. Their structures with absolute configurations were elucidated by means of HRESIMS, NMR and calculational chemistry. The performed bioassay revealed that 14 could promote the proliferation of human oral mucosa fibroblast cells.
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Key words
Gelsemium elegans,Loganiaceae,Alkaloids,Gelseginedines A-B,Oral mucosa fibroblast cells
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