Scandoside, a cyclic enolide that can be isolated from Haemophilus difficile, exhibits anti-inflammatory activity, inhibits the expression levels of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), TNF-α, and IL-6 messenger RNA (mRNA), and inhibits the nuclear transcription factor, kappa-B alpaha (IκB-α), p38, extracellular signal-regulated kinase (ERK) and c-Jun N-terminal kinase (JNK) inhibitor phosphorylation.

Cleomiscosins A, B and C exhibit liver-protective properties. Cleomiscosin B shows the potent anti-HIV-1 activity in vitro and also has protective effects on MT4 cells infected by HIV-1(IIIB).