4060-05-3Relevant academic research and scientific papers
A novel low-molecular-mass pumpkin polysaccharide: Structural characterization, antioxidant activity, and hypoglycemic potential
Huang, Linlin,Li, Fei,Li, Quanhong,Liang, Li,Wei, Yunlu,Yu, Guoyong
, (2020/10/02)
The novel natural low-molecular-mass polysaccharide (SLWPP-3) from pumpkin (Cucurbia moschata) was separated from the waste supernatant after macromolecular polysaccharide production and purified using a DEAE cellulose-52 column and gel-filtration chromatography. Chemical and instrumental studies revealed that SLWPP-3 with a molecular mass of 3.5 kDa was composed of rhamnose, glucose, arabinose, galactose and uronic acid with a weight ratio of 1: 1: 4: 6: 15, and primarily contained →3,6)-β-D-Galp-(1→, →4)-α-GalpA-(1→(OMe), →4)-α-GalpA-(1→, →2,4)-α-D-Rhap-(1→, →3)-β-D-Galp-(1→, →4)-α-D-Glcp, and →4)-β-D-Galp residues in the backbone. The branch chain passes were connected to the main chain through the O-4 atom of glucose and O-3 atom of arabinose. Physiologically, the ability of SLWPP-3 to inhibit carbohydrate-digesting enzymes and DPPH and ABTS radicals, as well as protect pancreatic β cells from oxidative damage by decreasing MDA levels and increasing SOD activities, was confirmed. The findings elucidated the structural types of pumpkin polysaccharides and revealed a potential adjuvant natural product with hypoglycemic effects.
Antibacterial Activity of a New Flavone Glycoside from the Stems of Holmskioldia sanguinea Retz.
Yadava,Raghuvansi, Jyotsna
, p. 1815 - 1818 (2019/07/18)
A new flavone glycoside was isolated from ethanolic extract of stem parts of Holmskioldia sanguinea Retz. Its structure was characterized as 3,4′-dihydroxy-5,7-dimethoxyflavone-3-O-β-D-galactopyranosyl(1→4)-O-β-D-arabinopyranosyl-4′-O-α-L-rhamnopyranoside (1) by colour reactions, chemical degradation and spectroscopic analysis. Antibacterial activity of compound 1 was evaluated against various Gram positive and Gram negative bacteria showing a significant effects.
Allelopathic effect of triterpenoid saponins from the stems of lathyrus aphaca linn
Yadava, Raj N.,Asati, Nidhi
, p. 177 - 184 (2018/09/14)
Two new triterpenoid saponins have been isolated from the methanolic extract of the stems of the Lathyrus aphaca Linn. A new compound 1 has m.p. 295?297°C, m.f. C47H78O16, [M]+ m/z 898 was characterized as 3-O-[β-D-galactopyranosyl-(14)]-β-D-xylopyranosyl-3β,11α,28-trihydroxy-olean-12-ene-28-O-α-L-rhamnopyranoside and compound 2 has m. p. 289-291°C, m.f. C46H76O16, [M]+ m/z 884 was characterized as 3-O-[β-D-xylopyranosyl-(1→4)]-β-D-glucopyranosyl-(1→4) α-L-arabinofuranosyl 2α,3β,19α-trihydroxy-olean-12-ene by various color reactions, chemical degradations, and spectral analysis. From experimental findings, it was concluded that both compounds 1 and 2 have shown allelopathic effects on the growth of shoot length of the seeds of Zea mays (L.).
Structural characterization and protective effect against murine sepsis of fucogalactans from Agaricus bisporus and Lactarius rufus
Ruthes, Andrea C.,Rattmann, Yanna D.,Carbonero, Elaine R.,Gorin, Philip A.J.,Iacomini, Marcello
experimental part, p. 1620 - 1627 (2012/04/11)
Fucogalactans from edible Agaricus bisporus (RFP-Ab) and wild Lactarius rufus (RFP-Lr) mushrooms were obtained on aqueous extraction followed by purification. RFP-Ab had Mw 43.8 × 104 g mol -1 and RFP-Lr Mw 1.4
New antifungal triterpenoid saponin from launaea pinnatifida cass
Yadava,Chakravarti
experimental part, p. 83 - 87 (2009/12/06)
A new triterpenoid saponin (compound 1), 3β-O-[α-L- rhamnopyranosyI-(l→3)-O-α-L-arabinopyranosyl-(l→3) -O-β-D-galactopyranosyl]-spergulatriol along with known compounds glutenol and hopenol-b have been isolated from the methanol soluble fraction of the defatted seeds of the plant and structurally elucidated by various colour reactions, chemical degradations and spectral analysis. Compound 1 shows antifungal activity against various fungi.
Triterpenoid Glycosides of Corchorus acutangulus Lam.
Mahato, Shashi B.,Pal, Bikas C.
, p. 629 - 634 (2007/10/02)
Four new triterpenoid glycosides, corchorusins A,B,C, and D, isolated from the aerial part of Corchorus acutangulus Lam. were respectively defined as longispinogenin 3-O-β-D-galactopyranoside (1), saikogenin F 3-O-β-D-galactopyranoside (12), 23-hydroxylongispinogenin 3-O-β-D-galactopyranoside (6), and saikogenin E 3-O-β-D-glucopyranosyl(12)-β-D-galactopyranoside (15) based on their spectral properties and some chemical transformations.
SYNTHESIS OF p-NITROPHENYL 3-O-β-D-GALACTOPYRANOSYL-β-D-GALACTOPYRANOSIDE AND p-NITROPHENYL 3-O-α-D-GALACTOPYRANOSYL-β-D-GALACTOPYRANOSIDE
Abbas, Saled A.,Barlow, Joseph J.,Matta, Khushi L.
, p. 231 - 244 (2007/10/02)
Glycosylation (catalyzed by mercuric cyanide) of p-nitrophenyl 2,4,6,-tri-O-acetyl-β-D-galactopyranoside (2) with 2,3,4,6-tetra-O-acetyl-α-D-galactopyranosyl bromide in acetonitrile afforded the α-(1->3)- and β-(1->3)-linked disaccharide heptaacetates (4
TWO RHAMNETIN DIGALACTOSIDES AND AN OLEANOLIC ACID DIGALACTOSIDE FROM THE FLOWERS OF CASSIA LAEVIGATA
Singh, J.
, p. 1832 - 1833 (2007/10/02)
From the flowers of Cassia laevigata, two new rhamnetin glycosides, the 3-galactosyl(1->4)galactopyranoside and the related 3-galactosyl(1->6)galactopyranoside, and oleanolic acid 3-galactosyl(1->4)galactopyranoside have been isolated.These three glycosides have not been isolated earlier from any plant source.The known compounds quercetin, docosyl alcohol, carnaubyl alcohol, ceryl alcohol and octacosanol have also been obtained.Key Word Index - Cassia laevigata; Leguminosae; flowers; rhamnetin 3-galactosyl(1->4)galactoside; rhamnetin 3-galactosyl(1->6)galactoside; oleanolic acid 3-galactosyl(1->4)galactoside.
