Cleistanthane diterpenoids from Vellozia aff. carunculares martius ex seubert (Velloziaceae)
| Autor: | Silva Gilson Cruz da, Valente Ligia Maria Marino, Patitucci Maria Lucia, Pinto Angelo da Cunha, Menezes Nanuza Luíza de |
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| Jazyk: | portugalština |
| Rok vydání: | 2001 |
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| Zdroj: | Química Nova v.24 n.5 2001 Química Nova Sociedade Brasileira de Química (SBQ) instacron:SBQ Química Nova, Volume: 24, Issue: 5, Pages: 619-625, Published: OCT 2001 Química Nova, Vol 24, Iss 5, Pp 619-625 (2001) |
| Popis: | From the hexane extract of leaves, stem and roots, of Vellozia aff. carunculares, fourteen cleistanthane diterpenoids were detected by HRGC-MS, through the analysis of their fragmentation patterns. Comparison of their MS spectra with those of authentic standards previously isolated from other species of the family Velloziaceae allowed the identification, with a high degree of confidence, of eigth known cleistanthane diterpenoids. Of these, four were isolated and identified from their MS, IR and ¹H and 13C NMR spectra, as the known cleistantha-8,11,13-trien-7-one, cleistantha-8,11,13-trien-3,7-dione, cleistantha-1,8,11,13-tetraen-3,7-dione and the first reported 6-alpha-hydroxy-cleistantha-8,11,13-trien-7-one. The triterpenoid beta-amyrin was also isolated. |
| Databáze: | OpenAIRE |
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