| Journal: | Brazilian Journal of Pharmaceutical Sciences |
| Database: | PERIÓDICA |
| System number: | 000451829 |
| ISSN: | 1984-8250 |
| Authors: | Reis, Adriana Cotta Cardoso1 Silva, Breno Mello2 Souza, José Dias3 Pereira, Guilherme Rocha4 Brandão, Geraldo Célio1 |
| Institutions: | 1Universidade Federal de Ouro Preto, Escola de Farmacia, Ouro Preto, Minas Gerais. Brasil 2Universidade Federal de Ouro Preto, Instituto de Ciencias Exatas e Biologicas, Ouro Preto, Minas Gerais. Brasil 3Universidade Federal de Minas Gerais, Instituto de Ciencias Exatas, Belo Horizonte, Minas Gerais. Brasil 4Pontificia Universidade Catolica de Minas Gerais, Instituto de Ciencias Exatas e Informatica, Belo Horizonte, Minas Gerais. Brasil |
| Year: | 2022 |
| Volumen: | 58 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | A phytochemical study of Tecoma genus (Bignoniaceae) was accomplished by antitumor activity of ethanolic extracts. Species of this genus are composed of small shrubs often used as ornamental plants. The Tecoma stans species is used in folk medicine for different purposes. Recent work shows in vitro anticancer activity against human breast cancer. The ethanolic extracts from leaves and trunks of Tecoma casneifolia, T. garrocha, T. stans var. angustata and T. stans var. stans were tested in vitro. The assays used were against line tumor cells by the MTT method and the most active extracts were further studied. In this way, the ethanolic extract from T. stans var. stans trunks presented the higher cytotoxicity against the tumor cell lines studied (CC50 0.02 to 0.55 µg/ml) when compared to the other extracts tested (CC50 0.08 to 200.0 µg/ml). Accordingly, this extract was selected for chromatographic fractionation from which five known lignans were isolated. Further, paulownin, paulownin acetate, sesamin, olivil and cycloolivil were identified using 13C and 1H NMR, IR, UV and spectroscopy and spectrometric MS techniques. These isolated compounds were tested and exhibited CC50 ranging from 13.01 to100.0 µg/ml which is superior to the ethanolic extract of trunk of T. stans |
| Disciplines: | Biología, Química |
| Keyword: | Fitoquímica, Angiospermas, Lignanos, Actividad citotóxica, Tecoma castaneifolia, Tecoma garrocha, Tecoma stans, Bignoniaceae |
| Keyword: | Phytochemistry, Angiosperms, Lignans, Cytotoxic activity, Tecoma castaneifolia, Tecoma garrocha, Tecoma stans, Bignoniaceae |
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