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Jin Ho Chung,Heung-Chule Shin,Jeong-Yong Cho,Seong-Koo Kang,Hyoung Jae Lee,Soo-Cheol Shin,Keun-Hyung Park,Jae-Hak Moon 한국식품과학회 2009 Food Science and Biotechnology Vol.18 No.2
Sixteen antioxidative active compounds isolated from the EtOAc layer of MeOH extracts of kochujang, Korean fermented red pepper paste, were structurally elucidated as fumaric acid, methyl succinate, succinic acid furan-2-yl ester methyl ester (gochujangate, a novel compound), 2-hydroxy-3-phenylpropanoic acid, 3,4-dihydroxybenzoic acid, 2,3-dihydroxybenzoic acid, 2,4-dihydroxybenzoic acid, 6,7-dihydroxy-2H-chromen-2-one (esculetin), caffeic acid, cis-p-coumaric acid, trans-p-coumaric acid, daidzin, genistin, apigenin 7-O-β-D-apiofuranosyl(1→2)-β-D-glucopyranoside, apigenin 7-O-β-Dglucopyranoside, and quercetin 3-O-α-L-rhamnopyranoside by mass spectrometry (MS) and nuclear magnetic resonance (NMR) experiments. These compounds were analyzed for the first time as antioxidants from kochujang.
Furandicarboxylates: marine biomass-derived bioplasticizers
이경원,( Nguyen Tan Phat ),박석규,문다솜,조진구 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.1
Galactaric acid which is a sugar acid derived from marine carbohydrate biomass, was used as starting material for a one-pot reaction in alcoholic medium to produce furandicarboxylic acids (FDCA) ester. A series of products were successfully synthesized, isolated and structurally characterized by spectra. Those products could act as bioplasticizers in polymer matrices with the core being 2,5-FDCA or 2,3-FDCA. This research provides information about the effect of alcohol solvents on the formation of products. Also for the first time, the plasticizing effects of 2,3-furandicarboxylate on poly(vinyl chloride) matrix is unveiled through some methods, namely Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA), tensile test on universal testing machine (UTM) and migration analyses.
An Antitumor Component from Fomitiporia ellipsoidea
( Zan Lifeng ),( Haiying Bao ),( Tolgor Bau ),( Hanbin Liu ),( Baokai Cui ) 한국미생물 · 생명공학회 2012 Journal of microbiology and biotechnology Vol.22 No.11
A natural furan derivative was isolated from the methanolic extract of the fruit bodies of Fomitiporia ellipsoidea. Its chemical structure was elucidated as methyl 3,5-dioxo- 1,3,5,7-tetrahydrobenzo[1,2-c:4,5-c`]difuran-4-carboxylate by means of extensive NMR and MS data analysis, and named as fomitiporiaester A (1). Compound 1 showed significant antitumor activity to hepatoma H22 in vivo, and the inhibition rates were 42.94%, 49.17%, and 58.15% at concentrations of 5, 10, and 20 mg/kg, respectively. Compound 1 showed weak cytotoxic activities against the human hepatoblastoma (HepG-2) and human oophoroma (Skov 3) cell lines with IC50 values of more than 100 ?M.