SEARCH Articles Figures Tables Bicyclic bridgehead nitrogen systems saturated Bridgehead Bridgehead nitrogen saturated bicyclic 6/5 ring-fused systems Bridgehead nitrogen saturated bicyclic 615 ring-fused systems with Nitrogen saturation Nitrogen systems Saturated Nitrogen Saturated bicyclic 6/5 ring-fused systems with bridgehead nitrogen and a single Saturated bicyclic 6/5 ring-fused systems with bridgehead nitrogen and a single additional Saturation systems