montanin/ジャーマンダー

Eight neoclerodane diterpenoids were identified in the extract of the aerial parts of Teucrium maghrebinum. Three of these, 12-epi-teucjaponin A (1), 12-epi-montanin D (2), and 12-epi-montanin B (3), are new natural products, whereas five, teucjaponin A, montanin D, 19-deacetylteuscorodol, teusalvin

A new neoclerodane, (12R)-epi-teuscordonin [1] has been isolated from Teucrium bicolor. The boat conformation of ring B and the configuration at C-12 in 1 were established by nOe experiments. The known diterpenoids montanin C, teucvin, 12-epi-teucvin, teupolin I, 12-epi-teupolin I, and (12S)-teucrin

From the aerial parts of Teucrium montbretii subsp. libanoticum 10 neoclerodane diterpenoids were isolated. Three of them are new [3beta-hydroxyteubutilin A (1), 12-epi-montanin G (2), 20-epi-3,20-di-O-deacetylteupyreinidin (3)], whereas the other seven, namely, 6-ketoteuscordin (4), teuscordinon

Clerosterol and clerosteryl acylglucosides were identified as the most abundant steroids of the aerial parts of Teucrium montanum L. subsp. pannonicum (Kern.) S. Pawł. Other constituents isolated were the neo-clerodane diterpenes auropolin and montanin H, and widespread triterpenes.

From the acetone extract of Teucrium tomentosum, a new antifeedant neo-clerodane diterpenoid teuctosin (1) was isolated along with teuflin (2), teucrin-H(2) (3), 6beta-hydroxyteuscordin (4), 6beta-acetylteuscordin (5) and montanin-D (6). The structure of the new compound was elucidated