An asymmetric total synthesis of lycopoclavamine-A (1), a structurally unique fawcettimine-type Lycopodiumalkaloid, was achieved via a stereoselective Pauson–Khand reaction and a stereoselective conjugate addition to construct a quaternary carbon center at C-12.
fawcettimine-related alkaloids, i.e., lycopoclavamines, lycoposquarrosamine-A, and other hydroxylated fawcettimine derivatives, were isolated from three species of Lycopodium (Lycopodiumclavatum, Lycopodium serratum, and Lycopodium squarrosum). The structures of the new alkaloids were elucidated by spectroscopic methods and chemical correlation.