The present invention relates to compounds, in particular derivatives of the diterpenoids sempervirol and 7‐keto‐sempervirol, and their use in therapy, including in pharmaceutical compositions and combinations, especially in the treatment and/or prophylaxis of the tropical diseases schistosomiasis and/or fascioliasis, for example in humans or in non‐human land mammals such as sheep, cattle, other ruminants, or goats.