Sceletium alkaloids. Part 11. Aza-ring expansion of cis-bicyclo[4.2.0]octanones and related compounds. A regiospecific synthesis of cis-octahydroindolones
Sceletium alkaloids. Part 10. Synthesis of 1-substituted cis-bicyclo[4.2.0]octanones through [2+2] cycloadditions of dichloroketene to alkenes. Structural characterization of cycloadducts by oxa-ring expansion