Chemical Constituents of Klainedoxa gabonenses and Paullinia pinnata

From the whole plant of Klainedoxa gabonenses betulinic acid (1), lupeol (2), ß-sitosterol (3), β-amyran-3-one (4) and 3,3',4'-tri-O-methylellagic acid (5) were isolated. Similarly paullinomide A (6), β-amyrin (7), 2-(4-hydroxy-3,5-dimethoxyphenyl)-3-hydroxymethyl-2,3-dihydro-1,4,5-trioxaphenanthren-6-one (8), 5α-poriferastane-3ß,6α-diol (9), β-sitosterol (3), l-quebrachitol (10), and ß-sitosterol glucopyranoside (11) were isolated from roots of Paullinia pinnata. Preliminary studies showed that 2-(4-hydroxy-3,5-dimethoxyphenyl)-3-hydroxymethyl-2,3-dihydro-1,4,5-trioxaphenanthren-6-one (8) showed moderate algicidal activity against the alga Chlorella fusca