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New radical reactions of S-alkoxycarbonyl xanthates. Total synthesis of (+/-)-cinnamolide and (+/-)-metlhylenolactocin
(Pergamon-Elsevier Science Ltd, Oxford, 1999)
Irradiation with visible light of S-alkoxycarbonyl xanthates derived from various alcohols gives rise to alkoxycarbonyl radicals with bifurcate reactivity: loss of carbon dioxide leads to deoxygenated derivatives (i.e. ...
Sequential radical addition/cyclization/β-elimination reactions. 3-exo- and 5-exo-cycloaddition reactions of 5-phenylthio-3-pentenyl and 5-phenylthio-3-pentynyl radicals
(Tetrahedron, 1992)
Sequential radical addition/5-exo-cyclization/β-elimination reactions, accomplished by thermally or photolytically induced decompositions of O-acyl derivatives of N-hydroxypyridine-2-thione or other thiohydroxamic esters ...
The synthesis and biological evaluation of A-ring substituted steroidal p-quinones
(Pergamon-Elsevier Science Ltd, Oxford, 1997)
The preparation of A-ring steroidal 1,4-quinones involves m-CPBA/(BzO)(2)O/hv oxidation of estrone (or estradiol 17-acetate), acid rearrangement of the obtained quinol, and oxidation A detailed NMR analysis of 1,4-quinones ...
Cyclopentane ring formation in the cycloaddition reaction of 3-alkenyl radicals to radicophilic olefins
(Tetrahedron, 1990)
Regioselective additions of 3-alkenyl radicals (10 and 20) to electron deficient olefinic bonds (7 and 17), followed by intramolecular 5- exo-cyclization and repeated addition to radicophilic double bonds were investigated ...