First record of l-quebrachitol in Allophylus edulis (Sapindaceae)

Antibacterial Ellagic Acid Derivatives and Other Constituents from Pancovia pedicellaris

“…The crude extract from the leaves obtained after concentration was further extracted with n-hexane, and the MeOH soluble fraction subjected to successive column chromatography over silica gel to yield five compounds, including the two new ellagic acid derivatives, i. e. the panconosides A (1) and B (2), 3,3 ,4 -tri-Omethylellagic acid 4-O-β -D-glucopyranoside (3) [8], allantoin (4) [9], and L-quebrachitol (5) [10].…”

“…As part of our ongoing search for bioactive metabolites from Cameroonian plants, we recently investigated extracts from the leaves and the stem bark of P. pedicellaris. In this paper, we report the results of these investigations which led to two new ellagic acid derivatives, panconosides A (1) and B (2), together with eleven 0932-0776 / 09 / 0900-1070 $ 06.00 c 2009 Verlag der Zeitschrift für Naturforschung, Tübingen · http://znaturforsch.com known compounds identified as 3,3 ,4 -tri-O-methylellagic acid 4-O-β -D-glucopyranoside (3), allantoin (4), L-quebrachitol (5), stigmasterol (6), umbelliferone (7), scopoletin (8), 8 -epi-cleomiscosin A (9), 3-oxotirucalla-7,24-dien-21-oic acid (10), benjaminamide (11), 3-O-β -D-glucopyranosylstigmasterol (12), and 7-oxostigmasteryl-3-O-β -D-glucopyranoside (13).…”

Differential Deterrent Activity of Natural Products Isolated from <i>Allophylus edulis</i> (Sapindaceae)

“…In that occasion no fractionation neither isolation of pure compounds had been pursued [11]. Regarding isolated compounds from this species, there are reports on the presence of cyanolipids in seeds [12] [13], of the methyl inositol quebrachitol in twigs [14], of phenolic compounds (responsible for the inhibitory action of the angiotensin converting enzyme) in branches and leaves [7], as well as of C-glycosil flavones (with antihepatotoxic activity) in leaves [6].…”

Structural analysis of 1l-chiro-inositol diester from Taraxacumudum

“…4 Other common inositol derivatives are pinitol (1D-3-O-methyl-chiro-inositol) and quebrachitol (1L-2-O-methyl-chiroinositol), isolated from various plant sources. 4,5 Both compounds have been shown to exhibit antidiabetic activity. 5,6 Inhibition of the transcription factor NF-jB activation by pinitol may explain its ability to suppress inflammatory cellular responses.…”

“…4,5 Both compounds have been shown to exhibit antidiabetic activity. 5,6 Inhibition of the transcription factor NF-jB activation by pinitol may explain its ability to suppress inflammatory cellular responses. 6 There is only one report on the occurrence of inositol esters with p-hydroxyphenylacetic acid in plants.…”