Tributyltin(IV) hydride mediated free-radical syntheses of dehydrodibenzochromanones, dehydrodibenzocoumaranones and aristolactams
摘要:
We describe free radical cyclization of methyl bromophenylacetylphenylacetates to novel dehydrodibenzo[de,g]chromanones; oxidation of the latter compounds allowed the first total synthesis of dehydrodibenzo[cd,f]coumaranones, which are easily transformed into aristolactams.
Total synthesis of aristolactam alkaloids via synergistic C–H bond activation and dehydro-Diels–Alder reactions
作者:Mallu Chenna Reddy、Masilamani Jeganmohan
DOI:10.1039/c7sc00161d
日期:——
concise total synthesis of aristolactam alkaloids by a synergistic combination of C–H bond activation and dehydro-Diels–Alder reactions is described. To achieve the synthesis two new synthetic methodologies, namely the oxidative cyclization of benzamides with vinyl sulfone leading to 3-methyleneisoindolin-1-ones via a ruthenium-catalyzed C–H bond activation, and a dehydro-Diels–Alder reaction followed by
The intramolecular aryne cycloaddition approach to aporphinoids. A new total synthesis of aristolactams and phenanthrene alkaloids
作者:Juan C. Estévez、Ramón J. Estévez、Luis Castedo
DOI:10.1016/0040-4020(95)00644-n
日期:1995.9
A new procedure for the total synthesis of aristolactams and phenanthrene alkaloids, based on the intramolecular Diels-Alder reaction between styrenes and arynes, is described.