Acacia concinna Saponins. I. Structures of Prosapogenols, Concinnosides A-F, Isolated from the Alkaline Hydrolysate of the Highly Polar Saponin Fraction.

Identification of Δ7 phytosterols and phytosteryl glucosides in the wood and bark of several Acacia speciesphytosterols and phytosteryl glucosides in the wood and bark of several Acacia species

“…Finally, acylsteryl glucosides, normally detected together with steryl glucoside, were not found in the present study, although they could have been detected easily under the experimental conditions used (17,20).…”

“…The steryl glucosides present in the lipidic fraction of Acacia woods and barks accounted for 31.5-159.0 mg/kg of dry wood and 146.0-352.6 mg/kg of dry bark (Table 3). Although it is commonly accepted that complete extraction of steryl glucosides requires more polar solvents (15), a recent publication showed that similar yields could be obtained with dichloromethane (16); and in the case of woody plants, we observed that after extraction with dichloromethane, only small amounts of steryl glucosides (less than 3%) remained in the sample (12,17). Therefore, these values are expected to be rep-resentative of the total content of steryl glucosides of the different Acacia wood and bark tissues.…”

Interfacial and wetting behavior of natural–synthetic mixed surfactant systems

“…In the case of surfactant formulation, apart from good wetting and surface activity, biodegradability and low ecotoxicity are also extremely important requirements from the environmental view point. The available literature shows that there have been fewer studies on natural surfactants 6,[15][16][17][18][19][20][21][22][23] compared to the enormous number of studies on synthetic surfactants. [1][2][3][4][5][7][8][9][10][11][12][13][14] In practice, also, they are even not able to substitute a small fraction of the worldwide consumption of totally synthetic surfactants.…”

Kinmoonosides A−C, Three New Cytotoxic Saponins from the Fruits of Acacia concinna, a Medicinal Plant Collected in Myanmar

“…To elucidate the structures of the genuine saponins, we first conducted the alkaline hydrolysis of the crude saponin fraction of A. concinna and obtained four monoterpenoids (5)(6)(7)(8) and five prosapogenins (9)(10)(11)(12)(13), while acid hydrolysis of the alkaline hydrolysate gave acacic acid lactone (14) 5 ( Figure 1). By analysis of their spectral data and comparison with literature values, monoterpenoids 5-7 were determined to be known compounds, namely, menthiafolic acid (5), 7 a mixture (1:1) of (6S)-and (6R)-menthiafolic acid 6-O--D-quinovopyranoside (6), 7 and a mixture (2:1) of two diastereomers of 3,6-epoxy-2-hydroxymethyl-6-methyl-7-octenoic acid (7), 11 while prosapogenins 11-13 were identified as 3-O--D-xylopyranosyl(1f2)-R-L-fucopyranosyl(1f6)- [ -D-glucopyranosyl(1f2)]--D-glucopyranoside (11); 12 acacic acid 3-O--D-xylopyranosyl(1f2)-R-L-arabinopyranosyl-(1f6)-2-acetamido-2-deoxy--D-glucopyranoside (12); 13 and acacic acid lactone 3-O--D-xylopyranosyl(1f2)-R-L-arabinopyranosyl(1f6)-[ -D-glucopyranosyl(1f2)]--D-glucopyranoside (13, concinnoside F ) albiziasaponin C), 5,14 respectively.…”