CARVALHO, Kaline Rodrigues. Alcalóides bioativos e fenólicos de Hippeastrum solandriflorum (Lindl.) - Amaryllidaceae. 2014. 139 f. Dissertação (Mestrado em química)- Universidade Federal do Ceará, Fortaleza-CE, 2014. / Submitted by Elineudson Ribeiro (elineudsonr@gmail.com) on 2016-06-02T18:29:58Z
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Previous issue date: 2014 / This work describes the phytochemical study of Hippeastrum solandriflorum(Amaryllidaceae)aiming the isolation and structural elucidation of new bioactive compounds, as well as its pharmacological investigation. The chemical investigation realized with the EtOH extract from bulbs, through chromatographic methods, including HPLC (reverse phase), resulting inthe isolation of ten compounds: a furan derivative: 5-(hydroxymethyl)furan-2-carbaldehyde(HS-1), two phenolic derivatives: piscidic acid (HS-2), eucomic acid (HS-3), and seven isoquinoline alkaloids: narciclasin ( HS-4), 2α-hydroxypseudolycorin (HS-5), 10α-hydroxy homolycorin (HS-6), galantamin (HS-7), sanguinin (HS-8),N-oxid galantamin (HS-9) andnarcissidin (HS10). The alkaloids (HS-5) and (HS-6) are being reported for the first time inthe literature, while the other ones have been isolated for the first time in the investigated species. The structures of all isolated compounds were determined based on spectrometricmethods (IR, HRMS, NMR 1H and13C–1D and 2D), besides comparison with published data. The cytotoxic potential of all alkaloids were evaluated against several tumor cell lines:colon (HCT-116), leukemia (HL-60), ovary (OVCAR-8) and brain (SF-295) showing IC50ranging from 0.01 to 35.7 μM. / Este trabalho descreve o estudo fitoquímico de Hippeastrum solandriflorum (Amaryllidaceae) visando o isolamento e elucidação estrutural de novos constituintes químicos bioativos, bem como o estudo farmacológico dos compostos obtidos. A investigação química realizada com o extrato etanólico dos bulbos, através de métodos cromatográficos, incluindo CLAE (fase reversa), resultou no isolamento e identificação de dez substâncias, sendo um derivado do furano: 5-(hidroximetil)furan-2-carbaldeido (HS-1), dois derivados fenólicos: acido piscidico(HS-2), acido eucômico (HS-3) e sete alcaloides isoquinolínicos: Narciclasina (HS-4), 2α-hidroxipseudolicorina (HS-5), 10αhidroxi-homolicorina (HS-6), Galantamina (HS-7), Sanguinina (HS-8),N-oxido galantamina (HS-9), Narcissidina (HS-10). Os alcaloides (HS-5)e (HS-6) esta sendo relatado pela primeira vez na literatura e os demais como sendo inéditos na espécie estudada. As substâncias isoladas tiveram suas estruturas elucidadas por métodos espectrométricos (IV, IES-EM e RMN de1H e13C 1D e 2D), além de comparação com dados da literatura. O potencial citotóxicodos alcaloides isolados foi avaliado frente às linhagens decélulas tumorais humanas: cólon (HCT-116), leucemia (HL-60), ovário (OVCAR-8) e cérebro (SF-295) mostrando valores IC50 variando 0,01–35,7 μM.
| Identifer | oai:union.ndltd.org:IBICT/oai:www.repositorio.ufc.br:riufc/18294 |
| Date | January 2014 |
| Creators | Carvalho, Kaline Rodrigues |
| Contributors | Torres, Maria da Conceição de Menezes |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFC, instname:Universidade Federal do Ceará, instacron:UFC |
| Rights | info:eu-repo/semantics/openAccess |
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