Teucrium divaricatum

Triterpenic and steroidal compounds were also isolated from Teucrium species. Common triterpenic acids such as ursolic acid, oleanolic acid and small amounts of micromeric acid were isolated from T.fruticans [81] while a-amyrin, lupeol, sitosterol and stigmasterol were present in T. divaricatum subsp. villosum [75]. Two new steroidal compounds SP-hydroxy-stigmast-24(24i), 25-dien-242-al (157) and 3P-hydroxy-24a-ethylcholesta-5, 25-dien-7-one (158) were isolated together with two known compounds 24a-ethylcholesta-5, 25-dien-3P-ol (159) and sitosterol from the aerial parts of T.chamaedrys subsp. chamaedrys [82]. The plant also yielded a-amyrin and ursolic acid. The structures of the new steroidal compounds were established by NMR techniques and by comparison of similar known compounds (Table 24). 

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