Sideritis mugronensis

Sideritis mugronensis an endemic plant of eastern Spain and is used in folk medicine as anti-inflammatory and antirheumatic agent. The active principle was found to be hypolaetin 8-glucoside (140) [58]. 

Another Spanish species, S. mugronensis, yielded boijatriol (117), a diterpenoid with manoyloxide structure and normal configuration [39]. This was the first case of a normal configuration in the diterpenoids of Sideritis. The structure was amended some years later [40], changing the position of the secondary hydroxy group from 6a to 70. 

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