Preusch, Peter C. published the artcileVitamin K1 2,3-epoxide and quinone reduction: mechanism and inhibition, Recommanded Product: 2-(2,3-Dichloro-4-(thiophene-2-carbonyl)phenoxy)acetic acid, the main research area is vitamin K1 epoxide quinone reduction microsome; reductase vitamin K epoxide microsome; DT diaphorase vitamin K metabolism microsome.
The chem. and enzymic pathways of vitamin K1 epoxide and quinone reduction have been investigated. Na borohydride treatment resulted in carbonyl reduction generating relatively stable compounds that did not proceed to quinone in the presence of base. NAD(P)H:quinone oxidoreductase (DT-diaphorase) reduction of vitamin K to the hydroquinone was a significant process in intact microsomes, but 1/5th the rate of the dithiothreitol (DTT)-dependent reduction No evidence was found for DT-diaphorase catalyzed reduction of vitamin K1 epoxide, nor was it capable of mediating transfer of electrons from NADH to the microsomal epoxide reducing enzyme. Purified diaphorase reduced detergent-solubilized vitamin K1 10-5 as rapidly as it reduced dichlorophenylindophenol (DCPIP). Reduction of 10 μM vitamin K1 by 200 μM NADH was not inhibited by 10 μM dicoumarol, whereas DCPIP reduction was fully inhibited. In contrast to vitamin K3 (menadione), vitamin K1 (phylloquinone) did not stimulate microsomal NADPH consumption in the presence or absence of dicoumarol. DTT-dependent vitamin K epoxide reduction and vitamin K reduction were shown to be mutually inhibitory reactions, suggesting that both occur at the same enzymic site. On this basis, a mechanism for reduction of the quinone by thiols is proposed. Both the DTT-dependent reduction of vitamin K1 epoxide and quinone, and the reduction of DCPIP by purified DT-diaphorase were inhibited by dicoumarol, warfarin, lapachol, and sulfaquinoxaline.
Free Radical Research Communications published new progress about Disulfide group. 40180-04-9 belongs to class benzothiophene, name is 2-(2,3-Dichloro-4-(thiophene-2-carbonyl)phenoxy)acetic acid, and the molecular formula is C13H8Cl2O4S, Recommanded Product: 2-(2,3-Dichloro-4-(thiophene-2-carbonyl)phenoxy)acetic acid.
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem