3 documents found, page 1 of 1
New flavone and other compounds from Tephrosia egregia: assessing the cytotoxic...
Teixeira, Maria V. S.; Lima, Jefferson Q.; Pimenta, Antônia T. A.; Silva, Francisca R. L. da; Oliveira, Maria da Conceição F. de; Pereira, Italo G.The organic extracts from stems, roots and leaves of Tephrosia egregia Sandwith, Fabaceae, provided anew flavone, 5-hydroxy-8-(1 ,2 -epoxy-3 -hydroxy-3 -methylbutyl)-7-methoxyflavone (1), in additionto eleven known compounds: pongaflavone (2), praecansone B (3), 12a-hydroxyrotenone (4), praecan-sone A, 2 ,6 -dimethoxy-4 ,5 -(2 ,2 -dimethyl)-pyranochalcone, pongachalcone, maackiain, -sistosteroland its glucoside...
New epimeric spirostanol and furostanol-type steroidal saponins from Cestrum la...
Lima, Mary Anne S.
Trachylobane and kaurane diterpenes from Croton floribundus Spreng
Uchôa, Paula Karina S.; Silva Jr., José Nunes da; Silveira, Edilberto Rocha; Lima, Mary Anne S.; Braz-Filho, Raimundo; Costa-Lotufo, Letícia VerasA new trachylobane diterpene ent-trachyloban-18,19-diol (1) was isolated from root bark of Croton floribundus, along with known diterpenes ent-trachyloban-19-oic acid (2), 15b-hydroxy-ent-trachyloban-19-oic acid (3), ent-trachyloban-19-ol (4), ent-kaur-16-en- 19-oic acid (5), ent-kaur-16-ene-6a,19-diol (6) and ent-16a-hydroxykaur-11-en-19-oic acid (7). ent-trachyloban-18,19-diol (1) was submitted to derivatizat...