2016
DOI: 10.21577/0103-5053.20160204
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Abstract: Chemical investigation of Sinningia warmingii (Gesneriaceae) tubers lead to the isolation of two new dimeric naphthoquinone derivatives, named warmingiins A and B, besides six known compounds, aggregatin E, aggregatin F, tectoquinone, halleridone, cleroindicin B, and cornoside. All compounds were identified by spectroscopic analysis, mainly nuclear magnetic resonance (NMR) and mass spectrometry (MS), and comparison with the literature. The structure of the warmingiin A, which is an artifact of warmingiin B, wa… Show more

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Cited by 3 publications
(3 citation statements)
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“…34 Similar results have been found for other Sinningia species, as S. hatschbachii and S. warmingii. 7,10 The antioxidant capacity, measured by ORAC method, was expressed as mmol of trolox equivalent (TE) by gram of dried extract (mmol TE g -1 ). Active extracts should exhibit TE ≥ 800 µmol g -1 .…”
Section: Resultsmentioning
confidence: 99%
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“…34 Similar results have been found for other Sinningia species, as S. hatschbachii and S. warmingii. 7,10 The antioxidant capacity, measured by ORAC method, was expressed as mmol of trolox equivalent (TE) by gram of dried extract (mmol TE g -1 ). Active extracts should exhibit TE ≥ 800 µmol g -1 .…”
Section: Resultsmentioning
confidence: 99%
“…2 Since then, new phytochemical studies were carried on S. aggregata 3 and S. allagophylla, 4 and five species were studied for the first time: S. canescens, 5,6 S. hatschbachii, 7 S. leucotricha, 6,8 S. reitzii, 9 e S. warmingii. 10 The chemical profile that arises from these studies shows that the genus is very chemically diverse, producing anthraquinones, naphthoquinones and derivatives, naphthochromenes, terpenoids, flavonoids, cyclohexylethanoids, and phenylethanoid glycosides. [2][3][4][5][6][7][8][9][10] Some compounds isolated from Sinningia spp exhibit biological activity.…”
Section: Introductionmentioning
confidence: 99%
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