Secondary Metabolites From Different Extractives of Stereospermum suaveolens

Abstract

ABSTRACT:The methanol extract of leaves and bark of Stereospermum suaveolens has been subjected to repeated-chromatographic separation and purification processes to isolate the secondary metabolites. A total of seven compounds have been isolated from the plant, which were identified as fridelin (1), β-sitosterone (stigmast-5-en-3-one) (2), stigmasterol (3), 3,4-dimethoxy cis-caffeic acid (4), 3β-friedelanol (5), β-amyrone (6) and glyceryl tricaprate (7). The structures of the isolated compounds were elucidated by extensive NMR studies.

Phytochemical Investigation of Calophyllum inophyllum L.

“…Thus, it was confirmed as stigmast-5-en-3-one (4). 6,7 Although, α-friedelan-3-ol (2), 4hydroxyxanthone (3), and stigmast-5-en-3-one (4) have been reported from C. inophyllum; this is the first report of occurrence of β-friedelin (1) from this plant. However, β-friedelin (1) was previously found in C. soulattri, C. brasiliense, C. thwaitesii, C. moonii, C. cordato-oblongum, and C. mucigerum [8][9][10][11][12] , whereas, 4-hydroxyxanthone (3) has been reported from C. soulattri and C. brasiliense.…”

Cytotoxic, thrombolytic, membrane stabilizing and anti-oxidant activities of <i>Hygrophila schulli</i>

“…As a part of our ongoing research on medicinal plants of Bangladesh (Haque et al, 2005;Ara et al, 2012;Sikder et al, 2013;Begum et al, 2014), we studied the crude methanol extracts of H. schulli as well as its organic and aqueous soluble fractions for cytotoxic, thrombolytic, membrane stabilizing and anti-oxidant activities for the first time and, herein, report the results of our investigations.…”

Alkaloids, Coumarin and Cinnamic Acid Derivative from Murraya koenigii (Linn.) Spreng.

“…12 Linalool, elemol, geranyl acetate, myrcene, alloocimene, α-Terpinene, (E)-β-Ocimene and neryl acetate had been isolated as essential oil from this plant. 13 As a part of our continuing studies with medicinal plants of Bangladesh [14][15][16][17][18] , we studied M. koenigii and we, herein, report the isolation of arborinine (1) 19 , ferulic acid (2) 20 , umbelliferone (3) 21 , mahanimbine (4) 6 , koenimbine (5) 5 , koenidine…”