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Plants of Hyptidinae subtribe (Lamiaceae – family), as  Mesosphaerum sidifolium , are a source of bioactive molecules. In the search for new drug candidates, we perform chemical characterization of diterpenes isolated from the aerial parts of  M. sidifolium  was carried out with uni- and bidimensional NMR spectral data, and evaluate  in silico  through the construction of a predictive model followed by  in vitro  testing  Mycobacterium tuberculosis  and  Mycobacterium smegmatis . Resulted in the isolation of four components: Pomiferin D (1), Salviol (2), Pomiferin E (3) and 2α-hydroxysugiol (4), as well as two phenolic compounds, rosmarinic and caffeic acids.  In silico  model identified 48 diterpenes likely to have biological activity against  M. tuberculosis . The diterpenes isolated were tested  in vitro  against  M. tuberculosis  demonstrating MIC = 125 µM for 4 and 1, while 2 and 3 -MIC = 250 µM. These compounds did not show biological activity at these concentrations for  M. smegmatis .

Four diterpenes identified in silico were isolated from Hyptidinae and demonstrated in vitro activity against Mycobacterium tuberculosis