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Updated: Jun 14, 2026
Applications of Liquid-Chromatography Tandem Mass Spectrometry in Natural Products Research: Tropane Alkaloids as a Case Study
Published on: March 8, 2024
Two new terpenoids from Trichilia quadrijuga (Meliaceae)
Virginia F Rodrigues1, Hadria M Carmo, Raimundo Braz Filho
1Laboratorio de Tecnologia de Alimentos, CCTA, Universidade Estadual do Norte Fluminense Darcy Ribeiro; Avenida Alberto Lamego 2000, Horto - 28013-602, Campos dos Goytacazes - RJ, Brazil. vfrfarma@yahoo.com.br
Abstract:
Two new terpenoids, ambrosanoli-10(14)-en-11,12-diol (1), a sesquiterpene named quadrijugol, and a pregnane steroid, 3beta,4beta-dihydroxypregnan-16-one (2), were isolated from the stem and leaves of Trichilia quadrijuga, along with eleven known compounds, spathulenol, kudtdiol, 2beta,3beta,4beta-trihydroxypregnan-16-one, bourjotinolone B, piscidinol, niloticin, dihydroniloticin, beta-sitosterol, 3-O-beta-D-glucopyranosyl-sitosterol, itesmol and stigmasterol. Structures were elucidated by spectral data analysis, mainly afforded by 1H and 3C NMR (1D and 2D NMR HMQC, HMBC, NOESY and COSY) and mass spectra.
