Total Synthesis of (−)-Carinatine A and (+)-Lycopladine A

An efficient synthesis of two Lycopodium alkaloids, (-)-carinatine A and (+)-lycopladine A, is achieved in eight steps. The synthesis features an intramolecular aldol reaction for assembling the 6,5-fused ring system, a subsequent Tsuji-Trost allylation for generating a quarternary carbon center, and a 6π-electrocyclization to form the pyridine ring.