Alkaloids and volatile constituents from the stem of Fusaea longifolia (Aubl.) Saff. (Annonaceae)

In Vitro Trypanocidal and Antibacterial Activities of Essential Oils from Four Species of the Family Annonaceae

“…A previous study by Tavares et al . which investigated the volatile constituents isolated from the stems of F. longifolia , reports that the main constituents of this species were α ‐cadinol (12.5 %) and spathulenol (12.0 %), however, only spathulenol was identified in our study.…”

“…These same constituents were identified as major compounds in the study of B. multiflora described by Alcantara et al [14] In our study, the presence of βbisabolene (2.2 %) and absence of spathulenol were observed and these differences may be related to abiotic factors such as: temperature, sunlight, seasonality, developmental stages, collection season, hydration and nutrition, among other factors. [15] A previous study by Tavares et al [16] which investigated the volatile constituents isolated from the stems of F. longifolia, reports that the main constituents of this species were α-cadinol (12.5 %) and spathulenol (12. [a] Retention index on Rxi-1MS column. [b] Retention index according to Adams.…”

Clerodane diterpenes from Polyalthia longifolia (Sonn) Thw. var. pendula: Potential antimalarial agents for drug resistant Plasmodium falciparum infection

“…The rest were; a steroid [betastigmasterol (4)] (Habib et al, 2007;Woldeyes et al, 2012) and two alkaloids [darienine (5) and L-stepholidine (6)] (Arango et al, 1987;Tavares et al, 2005). These compounds exhibited varying degrees of antiplasmodial activity against the blood schizonts of the multidrug resistant K1 strain of P. falciparum (Table 2).…”

Chemical constituents from Penianthus camerounensis Dekker (Menispermaceae)

“…This investigation have led to the isolation of a new ceramide (1), a new clerodane-type diterpenoid (2) (Fig. 1), and eight known metabolites -xylopic acid (3) (kaurane diterpenoid), syringaresinol (4) (lignane), iso-propylmethylcyclohexa-1,4-diol (5) (monoterpenoid), 1-(28-hydroxyoctacosanoyl) glycerol (monoglyceride) (6), scoparone (7) (coumarin), friedelin (8), friedelanol (9) (friedelane-type triterpenoid), betulinic acid (10) (lupane-type triterpenoid) -isolated for the first time in the genus Penianthus. Ten known compounds, O-methylmoschatoline (11), palmatine (12), penianthin (13), 8-epi-penianthin (14), ergosterol (15), stigmata-3,6-dione (16), stigmasterol (17), sitosterol (18), sitosterol-3-O-β-d-glucopyranoside (19), stigmasterol-3-O-β-d-glucopyranoside (20) (see Supplementary information available online for the chemical structures of compounds 3-20), were also obtained.…”