Two more pairs of C-12 epimeric neoclerodanes were isolated from the aerial
parts of Teucrium "maghrebinum" (Teucrium polium subspecies still unidenti
fied). They are the known teukotschyn 1, the new 12-epi-teukotschyn 2, the
new teughrebin 3 and the new 12-epi-teughrebin 4. The structures of the new
products were elucidated mainly by spectroscopic methods.