Certain 3-azabicyclo[3.3.1]nonane derivatives undergo unprecedented stereospecific skeletal cleavage when subjected to light affording a novel heterotricyclic skeleton.
![Graphical abstract: Unprecedented photochemical induced cascading rearrangement of the 3-azabicyclo[3.3.1]nonane skeleton](http://hg.y866.cn/compound/lib/scimg/usr/1/B402200A.jpg)
