Recebido em 24/8/00; aceito em 29/11/00 CLEISTANTHANE DITERPENOIDS FROM VELLOZIA AFF. CARUNCULARES MARTIUS EX SEUBERT (VELLOZIACEAE). 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 1 H and 13 C 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-α-hydroxycleistantha-8,11,13-trien-7-one. The triterpenoid β-amyrin was also isolated.
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