ABSTRACT
A new isocoumarin, 3-phenyl-8-hydroxy-6-methoxy-5-gamma,gamma-dimethylallyl-isocoumarin, named cajavilmina (1) and eight known compounds: a-amirenone (2), beta-amirenone (3), lupenone (4), 5-hydroxy-7-methoxydihydroflavone (5), longistilin C (6), 3-hydroxy-5-methoxystilbene (7), beta-sitosterol (8) and stigmasterol (9) were identified in a dichloromethane fraction from Cajanus cajan leaves. Structures were elucidated by analysis of spectral data, mainly those afforded by 1H, NOEDIFF and 13C NMR (1D and 2D NMR HMQC, HMBC and COSY) and mass spectra.
Subject(s)
Cajanus/chemistry , Isocoumarins/chemistry , Molecular StructureABSTRACT
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.
