Results 131 to 140 of about 2,015 (176)
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limonoids from Khaya senegalensis
Phytochemistry, 1998A new limonoid was isolated from the bark of Khaya senegalensis and identified as 2,6-dihydroxyfissinolide. The assignments of some signals in the (13)C NMR spectrum of fissinolide have been reversed and the signals of the (1)H NMR spectrum of methyl 3beta-acetoxy-6-hydroxy-1-oxomeliac-14-enoate have been assigned.
Khalid, Sami +5 more
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The trivial names of citrus limonoids
Food Chemistry, 2017abstract
LENTINI, Giovanni, Habtemariam, Solomon
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Melanogenesis‐Inhibitory Activities of Isomeric C‐seco Limonoids and Deesterified Limonoids
Chemistry & Biodiversity, 2016Treatment of eight C‐seco limonoids including six of salannin‐type, 1 – 6, and two of nimbin‐type, 7 and 8, with a combination of BF3 · Et2O and iodide ion yielded the isomeric C‐seco derivatives, i.e., six isosalannins, 1a – 6a, and two isonimbins, 7a and 8a, respectively.
Toshihiro, Akihisa +5 more
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Limonoids with anti-inflammatory activity: A review
Phytochemistry, 2022The natural limonoids distributed mainly in the Meliaceae and Rutaceae plants are known for their unique and complex structure with high degree oxidation and cyclic rearrangement. However, these compounds exhibit a broad range of biological activities such as insecticidal, antibacterial, antifungal, antimalarial, antioxidant, anticancer, antiviral, and
Erina, Hilmayanti +5 more
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Phytochemistry, 1989
Abstract Citrus contained high concentrations of limonoid glucosides. Four new glucosides, isolated from grapefruit seeds, were identified as limonin 17- O -β- d -glucopyranoside, nomilin 17- O -β- d -glucopyranoside, deacetylnomilin 17- O -β- d -glucopyranoside and obacunone 17- O -β- d -glucopyranoside.
Shin Hasegawa +4 more
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Abstract Citrus contained high concentrations of limonoid glucosides. Four new glucosides, isolated from grapefruit seeds, were identified as limonin 17- O -β- d -glucopyranoside, nomilin 17- O -β- d -glucopyranoside, deacetylnomilin 17- O -β- d -glucopyranoside and obacunone 17- O -β- d -glucopyranoside.
Shin Hasegawa +4 more
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Limonoids from Cipadessa baccifera
Journal of Natural Products, 2020Eighteen new limonoids, including eight methyl angolensates (1-8) and 10 cipadesins (9-18), were isolated from the leaves of Cipadessa baccifera. Their structures were characterized by means of spectroscopic data analyses, single-crystal X-ray diffraction, and quantum chemistry computational methods. The C-6 configurations in those compounds possessing
Jin-Hai Yu +7 more
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Evolution of limonoids in the Meliaceae
Biochemical Systematics and Ecology, 1984Abstract The structural types of limonoids or meliacins can be characterized in terms of complexity by their position along biosynthetic routes on a biogenetic map, as well as by their basic skeletal specialization and state of oxidation. Genera of the Melioidease, one major subfamily of the Meliaceae, contain meliacins formed along several ...
M.Fatima Das G.F. Da Silva +2 more
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Distribution of limonoids in the rutaceae
Phytochemistry, 1972Abstract Chemical studies on Choisya arizonica, C. mollis, C. ternata, Esenbeckia hartmanii, Hesperethusa crenulata, Eremocitrus glauca, Triphasia trifolia, Coleonema album and Pamburus missionis are described with special reference to the limonoid bitter principles.
David L. Dreyer +2 more
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Tetrahedron, 1981
Abstract Five new limonoids were isolated from calamondin seeds: methyl deacetylnomilinate (7), calamin (9), retrocalamin (10), cyclocalamin (11), and methyl isoobacunoate diosphenol (13). Structures were assigned on the basis of 1H and 13CNMR spectra, and chemical conversions of 9 to 10, 11, and 13. These reactions are also biogenetically plausible.
R.D. Bennett, S. Hasegawa
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Abstract Five new limonoids were isolated from calamondin seeds: methyl deacetylnomilinate (7), calamin (9), retrocalamin (10), cyclocalamin (11), and methyl isoobacunoate diosphenol (13). Structures were assigned on the basis of 1H and 13CNMR spectra, and chemical conversions of 9 to 10, 11, and 13. These reactions are also biogenetically plausible.
R.D. Bennett, S. Hasegawa
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Synthesis of a limonoid, azadiradione
Tetrahedron Letters, 1989Abstract Azadiradione 1 has been synthesized stereoselectively from trans, trans-farnesol.
E.J. Corey, Robert W. Hahl
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