2008
DOI: 10.1590/s0100-40422008000800024
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Investigação do potencial antioxidante e anticolinesterásico de Hippeastrum (Amaryllidaceae)

Abstract: Recebido em 20/12/07; aceito em 4/6/08; publicado na web em 5/11/08 ANTIOXIDANT AND ANTICOLINESTERASIC EFFECTS OF Hippeastrum SPECIES (AMARYLLIDACEAE). Amaryllidaceae family is an important source of bioactive molecules and considering the taxonomic relationships, it is relevant to investigate the genus Hippeastrum. Thus, the aim of this work was to determine antioxidant and anticholinesterasic activities of Hippeastrum morelianum, Hippeastrum psittacinum and Hippeastrum santacatarina. Both antioxidant and ace… Show more

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Cited by 19 publications
(18 citation statements)
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“…Lycorine (1) was previously isolated from fresh bulbs of Hippeastrum santacatarina (Traub) Dutilh, a native Amaryllidaceae species from the south of Brazil (Giordani et al, 2008). A voucher specimen was deposited in the herbarium at Federal University of Rio Grande do Sul (UFRGS), Brazil, under reference number ICN 149429.…”
Section: Sample Preparationmentioning
confidence: 99%
“…Lycorine (1) was previously isolated from fresh bulbs of Hippeastrum santacatarina (Traub) Dutilh, a native Amaryllidaceae species from the south of Brazil (Giordani et al, 2008). A voucher specimen was deposited in the herbarium at Federal University of Rio Grande do Sul (UFRGS), Brazil, under reference number ICN 149429.…”
Section: Sample Preparationmentioning
confidence: 99%
“…Lycorine ( 1 ) was obtained as the main alkaloid from the bulbs of Hippeastrum santacatarina (Traub) Dutilh (19). 1 H NMR (CDCl 3 , 300 MHz): δ 6.80 (1Η, s, H‐7); 6.57 (1H, s, H‐10); 5.40 (1H, s, H‐3); 5.90 (2H, s, OCH 2 O); 4.37 (1H, s, H‐1); 4.15 (1H, s, H‐2); 4.10 (1H, d, J 14.1 Hz, H‐6); 3.30 (1H, d, J 14.1 Hz, H‐6); 3.25 (1H, m, H‐12); 2.79 (1H, d, J 10.2 Hz, H‐4a); 2.65 (1H, d, J 10.1 Hz, H‐10b); 2.55 (2H, m, H‐11); 2.35 (1H, m, H‐12).…”
Section: Methodsmentioning
confidence: 99%
“…Lycorine (1) was obtained as the main alkaloid from the bulbs of Hippeastrum santacatarina (Traub) Dutilh (19 The lycorine derivatives were prepared using the synthetic strategy described in Scheme 1.…”
Section: Chemical Experimental Informationmentioning
confidence: 99%
“…Durante o processo de proteólise da Tau propaga-se a formação de pequenos agregados, os quais progridem para fibrilas levando à formação dos emaranhados neurofibrilares (NFTs), decorrente de um desequilíbrio na atividade das cinases e fosfatases. -TORRERO, 2002;GIORDANI et al, 2008;LARSON, 2013;LIEW;TAN;PEH, 2014;SUMMERS, 1989) A evolução dos sintomas da doença está associada a modificações estruturais nas sinapses colinérgicas em determinadas regiões cerebrais e, consequentemente, à diminuição do potencial de neurotransmissão colinérgica. O aumento da capacidade de neurotransmissão colinérgica constitui o mecanismo fundamental dos fármacos utilizados para o tratamento da DA.…”
Section: Lista De Abreviaturas E Siglasunclassified