Substituent effects in the oxidation of 2-alkyl-1,4-dialkoxybenzenes with ceric ammonium nitrate
作者:Brian E. Love、Alexander L. Simmons
DOI:10.1016/j.tetlet.2016.11.042
日期:2016.12
Increased steric size of alkyl groups and the presence of coordinating atoms on alkoxy groups have both been found to contribute to decreasing yields of diquinones upon reaction of 2-alkyl-1,4-dialkoxybenzenes with CAN. The overall hydrophilicity of the substrates does not appear to be a significant factor in determining the diquinone yield for these reactions.
Cross-Linking and Sequence Specific Alkylation of DNA by Aziridinylquinones. 1. Quinone Methides
作者:Stephen P. Mayalarp、Rob H. J. Hargreaves、John Butler、C. Caroline O'Hare、John A. Hartley
DOI:10.1021/jm950629q
日期:1996.1.1
cytotoxicities and DNA cross-linking abilities of 16 1,4-benzoquinones have been investigated. All of the alkylmonoaziridinyl-1,4-benzoquinones were able to interstrand crosslink DNA after reduction and were cytotoxic in vitro. Compounds lacking an aziridine group were unable to cross-link DNA and were less cytotoxic. The methyl analogues were shown to preferentially react at TGC sequences. From comparing
Described herein are peptide derivatives and peptidomimetics as inhibitors for transglutaminases, methods for their preparation, pharmaceutical compositions containing said compounds as well as uses of said transglutaminase inhibitors in particular for the treatment of coeliac disease and transglutaminase dependent diseases.
A water-soluble triphenodioxazine dye having a chloro or bromo atom at one of the 6- and 13-positions and a group of Formula (1) at the remaining 6- or 13-position: ##STR1## wherein: R.sup.1 is H, OH or CH.sub.3 ; and R.sup.2 is C.sub.1-3 -alkyl, hydroxy-C.sub.1-3 -alkyl or --CH.sub.2 --(C.sub.1-4 -alkyl). The dyes are useful for the coloration of textile materials.
Positions 7- and/or 6-substituted 1,2,3,4,4a,9b-Hexahydro-8-hydroxydibenzofuran-3-ols and analogs of that general structure are described. These compounds are found to be potent inhibitors of 5-lipoxygenase, an enzyme crucial to the biosynthesis of leukotrienes and useful in the treatment of a variety of inflammatory conditions.