On the Occurrence of Caffeoyltartronic Acid and Other Phenolics in Chondrilla Juncea M
On the Occurrence of Caffeoyltartronic Acid and Other Phenolics in Chondrilla juncea M. C. Terencio, R. M. Giner, M. J. Sanz, S. M áñez, and J. L. Ríos Unitat de Farmacognosia, Departament de Farmacologia, Facultat de Farmacia, Universität de Valencia, c/Vicent Andres Estelles s/n, Burjassot, 46100 Valencia, Spain Z. Naturforsch. 48c, 417-419 (1993); received November 9/December 21, 1992 Chondrilla juncea, Lactuceae, Asteraceae, Caffeoyltartronic Acid, Flavonoids Caffeoyltartronic acid and other eleven phenolic compounds were identified in the MeOH extract of Chondrilla juncea: the flavonoids luteolin, luteolin-7-glucoside, luteolin-7-galacto- sylglucuronide and quercetin-3-galactoside; the phenolic acids protocatechuic, caffeic, chloro- genic, isochlorogenic and isoferulic and the coumarins cichoriin and aesculetin. The taxonom ic implications of these compounds have been discussed. Introduction The presence of the signal corresponding to C -l at The genus Chondrilla (Asteraceae) belongs to 147.5, ca. 2 ppm at a lower field than expected the subtribe Crepidinae of the tribe Lactuceae. when we compare it with other caffeoate deriva This genus includes four European species, but tives, is due to the strong electronegative effect of Chondrilla juncea L. is the only one that grows in the two carboxylic groups in the tartronic moiety. the Iberian Peninsula [1], The chemistry of this 'H NMR (D20) 5 (ppm) 7.62 (d, H-7, J = 16 Hz), plant has not been studied before. This report de 7.14 (d, H-2, J = 2 Hz), 7.05 (dd, H-6, J = 8, / ' = scribes the phenolic compounds from C. juncea 2 Hz), 6.86 (d, H-5, J = 8 Hz), 6.39 (d, H-8, J = and discusses their chemotaxonomic value within 16 Hz), 5.48 (s, H-2').
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