Furanoid Diterpenes in the Bitter Fraction of Teucrium polium L.

Abstract

Abstract Three known furanoid diterpenes Teucrin P 1 (2), Teucrin H 3 (3) and Montanin B (4) have been isolated for the first time from the bitter fraction of the aerial parts of Teucrium polium L. In addition two new diterpenes of this type Teupolin I (5) and Teupolin II (6) have been also found in the plant extract. The structure and stereochemistry were established using spectral methods and chemical evidence.