ANTIOXIDANT NAPHTHOQUINONES OF Sinningia reitzii FROM SANTA CATARINA STATE, BRAZIL
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Química Nova (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422021000300284 |
Resumo: | Sinningia reitzii (Hoehne) L. E. Skog (Gesneriaceae) is a subshrub native to Brazil, where it is distributed in two disjunctive populations around the 26°S and 23°S parallels. In this work, tubers of plants from the wild population growing at the 26°S parallel (Santa Catarina state) yielded two new naphthoquinones, 5,6-dihydroxy-7-methoxy-a-dunnione and 8-hydroxy-6,7-dimethoxy-a-dunnione. Three known compounds were also isolated: 6,8-dihydroxy-7-methoxy-a-dunnione, 5-hydroxy-6,7-dimethoxy-a-dunnione, and 6,8-dihydroxy-7-methoxy-2-O-methyldunniol. The naphthoquinones 6,8-dihydroxy-7-methoxy-2-O-methyldunniol, 6,8-dihydroxy-7-methoxy-a-dunnione, and 5,6-dihydroxy-7-methoxy-a-dunnione displayed antioxidant activity in the ORAC-FL method, with values of relative trolox equivalent in the range of 1.39-4.83 mmol g-1. |
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ANTIOXIDANT NAPHTHOQUINONES OF Sinningia reitzii FROM SANTA CATARINA STATE, BRAZILGesneriaceaeSinningia reitziinaphthoquinonesantioxidant activitySinningia reitzii (Hoehne) L. E. Skog (Gesneriaceae) is a subshrub native to Brazil, where it is distributed in two disjunctive populations around the 26°S and 23°S parallels. In this work, tubers of plants from the wild population growing at the 26°S parallel (Santa Catarina state) yielded two new naphthoquinones, 5,6-dihydroxy-7-methoxy-a-dunnione and 8-hydroxy-6,7-dimethoxy-a-dunnione. Three known compounds were also isolated: 6,8-dihydroxy-7-methoxy-a-dunnione, 5-hydroxy-6,7-dimethoxy-a-dunnione, and 6,8-dihydroxy-7-methoxy-2-O-methyldunniol. The naphthoquinones 6,8-dihydroxy-7-methoxy-2-O-methyldunniol, 6,8-dihydroxy-7-methoxy-a-dunnione, and 5,6-dihydroxy-7-methoxy-a-dunnione displayed antioxidant activity in the ORAC-FL method, with values of relative trolox equivalent in the range of 1.39-4.83 mmol g-1.Sociedade Brasileira de Química2021-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422021000300284Química Nova v.44 n.3 2021reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.21577/0100-4042.20170682info:eu-repo/semantics/openAccessWiniewski,VanessaSilva,Adson S.Alvarez,Kattleen D. C.Sá,Eduardo L. deSalvador,Marcos J.Stefanello,Maria Élida A.eng2021-05-21T00:00:00Zoai:scielo:S0100-40422021000300284Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2021-05-21T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
ANTIOXIDANT NAPHTHOQUINONES OF Sinningia reitzii FROM SANTA CATARINA STATE, BRAZIL |
title |
ANTIOXIDANT NAPHTHOQUINONES OF Sinningia reitzii FROM SANTA CATARINA STATE, BRAZIL |
spellingShingle |
ANTIOXIDANT NAPHTHOQUINONES OF Sinningia reitzii FROM SANTA CATARINA STATE, BRAZIL Winiewski,Vanessa Gesneriaceae Sinningia reitzii naphthoquinones antioxidant activity |
title_short |
ANTIOXIDANT NAPHTHOQUINONES OF Sinningia reitzii FROM SANTA CATARINA STATE, BRAZIL |
title_full |
ANTIOXIDANT NAPHTHOQUINONES OF Sinningia reitzii FROM SANTA CATARINA STATE, BRAZIL |
title_fullStr |
ANTIOXIDANT NAPHTHOQUINONES OF Sinningia reitzii FROM SANTA CATARINA STATE, BRAZIL |
title_full_unstemmed |
ANTIOXIDANT NAPHTHOQUINONES OF Sinningia reitzii FROM SANTA CATARINA STATE, BRAZIL |
title_sort |
ANTIOXIDANT NAPHTHOQUINONES OF Sinningia reitzii FROM SANTA CATARINA STATE, BRAZIL |
author |
Winiewski,Vanessa |
author_facet |
Winiewski,Vanessa Silva,Adson S. Alvarez,Kattleen D. C. Sá,Eduardo L. de Salvador,Marcos J. Stefanello,Maria Élida A. |
author_role |
author |
author2 |
Silva,Adson S. Alvarez,Kattleen D. C. Sá,Eduardo L. de Salvador,Marcos J. Stefanello,Maria Élida A. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Winiewski,Vanessa Silva,Adson S. Alvarez,Kattleen D. C. Sá,Eduardo L. de Salvador,Marcos J. Stefanello,Maria Élida A. |
dc.subject.por.fl_str_mv |
Gesneriaceae Sinningia reitzii naphthoquinones antioxidant activity |
topic |
Gesneriaceae Sinningia reitzii naphthoquinones antioxidant activity |
description |
Sinningia reitzii (Hoehne) L. E. Skog (Gesneriaceae) is a subshrub native to Brazil, where it is distributed in two disjunctive populations around the 26°S and 23°S parallels. In this work, tubers of plants from the wild population growing at the 26°S parallel (Santa Catarina state) yielded two new naphthoquinones, 5,6-dihydroxy-7-methoxy-a-dunnione and 8-hydroxy-6,7-dimethoxy-a-dunnione. Three known compounds were also isolated: 6,8-dihydroxy-7-methoxy-a-dunnione, 5-hydroxy-6,7-dimethoxy-a-dunnione, and 6,8-dihydroxy-7-methoxy-2-O-methyldunniol. The naphthoquinones 6,8-dihydroxy-7-methoxy-2-O-methyldunniol, 6,8-dihydroxy-7-methoxy-a-dunnione, and 5,6-dihydroxy-7-methoxy-a-dunnione displayed antioxidant activity in the ORAC-FL method, with values of relative trolox equivalent in the range of 1.39-4.83 mmol g-1. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-03-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422021000300284 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422021000300284 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.21577/0100-4042.20170682 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Química Nova v.44 n.3 2021 reponame:Química Nova (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Química Nova (Online) |
collection |
Química Nova (Online) |
repository.name.fl_str_mv |
Química Nova (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
quimicanova@sbq.org.br |
_version_ |
1750318121055420416 |