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Powerful antioxidative agents based on garcinoic acid from Garcinia kola.
Investigation on the structure--antioxidative activity relationships of derivatives based on garcinoic acid from Garcinia kola (Guttiferae) led to discovery of a powerful antioxidative agent.
Studies on the chemical constituents of Psoralea corylifolia L.
A new isoflavone, corylinin (1), along with six known compounds, isopsoralen (2), psoralen (3), sophoracoumestan A (4), neobavaisoflavone (5), daidzin (6) and uracil (7), have been isolated from theExpand
Isoflavonoid glycosides from Dalbergia sissoo.
Two isoflavone glycosides, biochanin A 7-O-[beta-D-apiofuranosyl-(1-->5)-beta-D-apiofuranosyl-(1-->6)-beta-D-glucopyranoside] and tectorigeninExpand
Antioxidant constituents of radish sprout (Kaiware-daikon), Raphanus sativus L.
Methanol extracts of 11 kinds of commonly available vegetables were examined for hydroxyl radical scavenging potency using the bleomycin-Fe method. In this method, the iron ion and bleomycin in waterExpand
Biomimic transformation of resveratrol
Abstract Resveratrol was treated with several kinds of peroxidases and inorganic reagents so as to prepare e-viniferin. Among several inorganic reagents, which were investigated in this study,Expand
Antioxidant constituents in distillation residue of Awamori spirits.
Constituents in a distillation residue of Awamori (millet spirits) and their antioxidant activity are investigated in this study. The supernatant of the distillation residue obtained byExpand
Exploring the structural basis of neurotoxicity in C(17)-polyacetylenes isolated from water hemlock.
Water hemlock, Cicuta virosa, belonging to the Umbelliferae, is well-known as a toxic plant responsible for lethal poisonings in humans as well as animals, causing tonic and clonic convulsions andExpand
Absolute configurations of some oligostilbenes from Vitis coignetiae and Vitis vinifera ‘Kyohou’
Abstract Hepatotoxic oligostilbenes, (+)-vitisin A and (+)- cis -vitisin A were isolated as a pure form, respectively, by the method of recycled HPLC. The structure of cis -vitisin A was confirmed byExpand
Cyclic dipeptides exhibit potency for scavenging radicals.
Twenty kinds of cyclic dipeptides containing l-leucine were synthesized, and their antioxidant activity against ·OH and O(2)(·-) was investigated. Compounds possessing polar amino acid residues, suchExpand
An investigation of the antitumor peptidoglycan fraction from squid ink.
Squid ink, which has little commercial use and is usually discarded, was extracted using a Tris-HCl buffer (pH 6.8). The extract was fractionated using DEAE Sephacel ion-exchange chromatography andExpand