The quinone methide (II), which is obtained by oxidation of the hydroquinone (I), is capable of being cyclized affording the product (III) by treatment under the conditions shown in the scheme.doi:10.1002/chin.198920085S. R. ANGLEK. D. TURNBULL...
Oligo( p -quinone methide)s bridged with thiophene rings. Novel oligomeric, quinonoid π-systems with high electron affinitydoi:10.1016/S0040-4039(97)10323-9Novel cross-conjugated oligomers composed of p-quinone methides and thiophenes, synthesized up to tetramer, possess substantially high electron...
p quinone diimine【化】 对醌二亚胺 p quinone dioxime【化】 对醌二肟 quinone imide醌亚胺 quinone chlorimideN-氯化醌亚胺 quinone methide【化】 醌的甲基化物 ethylenimine quinone癌抑散 tocopherol quinone【医】 生育醌 acenaphthene quinone二氢苊醌 ...
ChemInform Abstract: Adamantane2,4-bis(p-quinone methide) and -2,6-bis(p-quinone methide) as New Models for Intramolecular Interactions Between Spatially Separated Redox Systemsbridged compoundsChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted ...
The polyketide-based p-quinone methide antibiotic, elansolidA3, was isolated from the gliding bacterium Chitinophaga sancti. It now appears probable that elansolidA3 is the underlying biosynthetic product of the atropisomeric macrolide antibiotics elansolidA1 and A2 (see scheme). Under mild basic ...
The dependence of the electronic structure of p-quinonemethide-9,1O-dihydroxyanthracene dianion system on interplane distanceand mutual orientation of the reactants was analyzed on the basisof CNDO/S3 calculations. Mutual perturbation of donor's and acceptor'selectronic systems during parallel ...
Elansolid A3, a unique p-quinone methide antibiotic from Chitinophaga sancti. Chem. Eur. J. 17, 7739-7744 (2011).Jansen, R.; Gerth, K.; Steinmetz, H.; Reinecke, S.; Kessler, W.; Kirschning, A.; Muller, R. Elansolid A3, a unique p-quinone methide antibiotic from Chitinophaga...
reaction: see text] The synthesis of two model p-quinone methide ring systems of the antibiotic and antiosteoporotic compound kendomycin is reported. Two approaches were examined in detail, and the two-step (i) demethylation and (ii) DMDO oxidation were found to be reliable and generally appli...
Introduction The role of quinone methide intermediates in bioreductive processes is well-established.1-5 Investigations with DNA and nucleic acids have predominantly been carried out with o-quinone methides6-12 and less with p-quinone methides13-15 focusing on base alkylation. In developing a ...
ChemInform Abstract: Quinone Methide p‐Hydroxybenzylation of 1,3‐Diketones.ketones (benzene compoundsdiphenylmethane derivativescycloalkylphenyl derivativesNo abstract is available for this article.doi:10.1002/chin.198830154POSS, A. J.BELTER, R. K....