N-hydroxypyridine-2-thione carbamates. v. syntheses of alkaloid skeletons by aminium cation radical cyclizations
作者:Martin Newcomb、Donald J. Marquardt、Thomas M. Deeb
DOI:10.1016/s0040-4020(01)82013-5
日期:1990.1
The title radical precursors (PTOC carbamates) were employed as sources of a variety of 5,6-unsaturated aminium cation radicals. 5-Exo radicalcyclization followed by trapping by t-BuSH or the PTOC carbamate gave a variety of aklaloid skeletons, typically in good to excellent yields, including pyrrolidines, perhydroindoles, pyrrolizidines, tropanes, 9-azabicyclo[4.2.1]nonanes, 6-azabicyclo [3.2.1]octanes