35775-22-5Relevant academic research and scientific papers
CLEAVAGE OF INTERGLYCOSIDIC LINKAGES IN PER(TRIMETHYLSILYL)ATED AND PERMETHYLATED CARBOHYDRATES WITH IODOTRIMETHYLSILANE
Honda, Susumu,Ichii, Tsunehiko,Kakehi, Kazuaki
, p. 95 - 104 (1983)
Iodotrimethylsilane in carbon tetrachloride cleaves interglycosidic linkages in per(trimethylsilyl)ated disaccharides to give iodinolysis products that may be readily hydrolyzed to component monosaccharides.The cleavage rate is dependent on the type of interglycosidic linkage, and is in the order (1->4)2)3)6) for derivatives of β-linked glucobioses.This iodinolysis reagent is more reactive toward interglycosidic linkages in permethylated carbohydrates; all of the linkages in the permethylated derivatives examined were completely cleaved, irrespective of linkage type.Iodinolysis with iodotrimethylsilane, followed by treatment of the products with water, offers a rapid and mild method for hydrolysis of permethylated carbohydrates.
Characterization of a novel polysaccharide with anti-colon cancer activity from Lactobacillus helveticus MB2-1
Li, Wei,Tang, Weizhi,Ji, Juan,Xia, Xiudong,Rui, Xin,Chen, Xiaohong,Jiang, Mei,Zhou, Jianzhong,Dong, Mingsheng
, p. 6 - 14 (2015/05/13)
The present study aimed at investigating the potential anti-colon cancer activity of three purified exopolysaccharides fractions (LHEPS-1, LHEPS-2 and LHEPS-3) from the Lactobacillus helveticus MB2-1. The experimental evidence showed that LHEPS-1 significantly inhibited cell proliferation of human colon cancer Caco-2 cells in both time- and concentration-dependent manners. In contrast, no significant improvements of the inhibitory effects of LHEPS-2 and LHEPS-3 on Caco-2 cells were observed with increasing sample concentrations or prolonged incubation time. Furthermore, the structure of LHEPS-1 was elucidated using methylated analysis, gas chromatography-mass spectroscopy (GC-MS) and nuclear magnetic resonance spectroscopy (NMR), including one- and two-dimensional nuclear magnetic resonance (1D and 2D NMR). Results indicated that the LHEPS-1 consisted of a decasaccharide repeating unit with the following structure (n≈122): Our results suggested that the LHEPS-1 produced by L. helveticus MB2-1 might be suitable for using as natural anti-colon cancer drugs and functional foods ingredients.
Purification and structural investigation of a water-soluble polysaccharide from Flammulina velutipes
Zhang, An-Qiang,Xiao, Nan-Nan,Deng, Ying-Lin,He, Peng-Fei,Sun, Pei-Long
experimental part, p. 2279 - 2283 (2012/05/07)
A novel water-soluble heteropolysaccharide FVP60-B was extracted from the fruiting bodies of Flammulina velutipes with boiling water and purified by Sephacryl S-300 and S-400, which molecular weight was estimated to be 1.3 × 104 Da by HPLC. It
ISOLATION AND STRUCTURES OF ELLAGIC ACID DERIVATIVES FROM EUPHORBIA ACAULIS
Bindra, R. S.,Satti, N. K.,Suri, O. P.
, p. 2313 - 2316 (2007/10/02)
Key Word Index-Euphorbia acaulis; Euphorbiaceae; 3,3'-di-O-methyl ellagic acid 4'-rutinoside; 3,4,3'-tri-O-methyl ellagic acid 4'-rutinoside.Abstract-A new ellagic acid glycoside, 3,3'-di-O-methyl ellagic acid 4'-rutinoside, along with 3,4,3'-tri-O-methyl ellagic acid 4'-rutinoside and 3,4,3'-tri-O-methyl ellagic acid have been isolated from the rhizomes of Euphorbia acaulis.The structures of these compounds have been established on the basis of spectral (1H NMR, 13C NMR, MS, IR, UV) and chemical evidence.
A BITTER MONOTERPENE DIGLYCOSIDE FROM VIBURNUM URCEOLATUM
Iwagawa, Tetsuo,Hase, Tsunao
, p. 255 - 258 (2007/10/02)
From the methanolic extract of the leaves of Viburnum urceolatum a new bitter monoterpen diglycoside, urceolide, has been isolated in addition to several known compounds.The structures were elucidated by spectroscopic and chemical methods.Key Word Index - Viburnum urceolatum; Caprifoliaceae; monoterpene diglycoside; urceolide.
ISOCAVIUNIN 7-GENTIOBIOSIDE, A NEW ISOFLAVONE GLYCOSIDE FROM DALBERGIA SISSOO
Sharma, Anil,Chibber, S. S.,Chawla, H. M.
, p. 715 (2007/10/02)
Key Word Index - Dalbergia sissoo; Leguminosae; isoflavone; isocaviunin-7-O-β-(1-->6)-diglucoside.
ACETOLYSIS OF Leukonostoc mesenteroides NRRL B-1299 DEXTRAN. ISOLATION AND CHARACTERIZATION OF OLIGOSACCHARIDES CONTAINING SECONDARY LINKAGES FROM THE BORATE-SOLUBLE FRACTION
Watanabe, Toshiyuki,Chiba, Michiko,Matsuda, Yutaka,Sakurai, Fukuko,Kobayashi, Mikihiko,Matsuda, Kazuo
, p. 119 - 128 (2007/10/02)
Fractionation of the deacetylated acetolyzate of the borate-soluble fraction of the dextran elaborated by Leuconostoc mesenteroides MRRL B-1299 gave, after chromatography on charcoal-Celite, preparative paper-chromatography, and paper electrophoresis, four trisaccharide fractions and four tetrasaccharide fractions.The isolated oligosaccharides were characterized by their paper-chromatographic mobility, examination of partial acid-hydrolyzates of the oligosaccharides and their corresponding alditols, and methylation analysis.These oligosaccharides were shown to be (a) kojitriose (1), (b) isomaltotriose (2), (c) a mixture of 2-O-α-isomaltosyl-D-glucose (3), 21-O-α-D-glucosylisomaltose (4), and 2-O-α-nigerosyl-D-glucose (5), (d) 6-O-α-kojibiosyl-D-glucose (6), (e) isomaltotetraose (7), (f) a mixture of 2-O-α-isomaltotriosyl-D-glucose (8) and 21-O-α-D-glycosylisomaltotriose (9), (g) 6-O-α-kojitriosyl-D-glucose (10), and (h) 63-O-α-D-glucosylkojitriose (11), respectively.Some of these oligosaccharides are newly isolated and characterized.
