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Leptocarposide: a new triterpenoid glycoside from Ludwigia leptocarpa (Onagraceae)

Abstract : A new triterpenoid bidesmoside (leptocarposide) possessing an acyl group in their glycosidic moiety (1), together with the known luteolin-8-C-glucoside (2) and 1-O-β-d-glucopyranosyl-(2S,3R,8E)-2-[(2′R)-2-hydroxypalmitoylamino]-8-octadecen-1,3-diol (3) was isolated from the n-butanol-soluble fraction of whole plant of Ludwigia leptocarpa (Nutt) Hara (Onagraceae). Structure of compound 1 has been assigned on the basis of spectroscopic data (1H and 13C NMR, 1H-1H COSY, HSQC, HMBC, and ROESY), mass spectrometry, and by comparison with the literature. This compound was further screened for its potential antioxidant properties by using the radical scavenging assay model 2,2-diphenyl-1-picrylhydrazyl and reveals non-potent antioxidant activities, while compound 2 shows SC50 of 0,038 mM.
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Submitted on : Thursday, October 28, 2021 - 4:48:39 PM
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Florence Déclaire Mabou, Perrin Lanversin Foning Tebou, David Ngnokam, Dominique Harakat, Laurence Voutquenne-Nazabadioko, et al.. Leptocarposide: a new triterpenoid glycoside from Ludwigia leptocarpa (Onagraceae). Magnetic Resonance in Chemistry, Wiley, 2014, 52 (1-2), pp.32-36. ⟨10.1002/mrc.4023⟩. ⟨hal-01996711⟩



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