Cabraleahydroxylactone displays antimycobacterial activity against Mycobacterium tuberculosis, it is weakly cytotoxic to a breast cancer (BC) cell line.It shows antiviral activity against herpes simplex virus type-1 with an IC50 value of 3.20 ug mL, in comparison with the standard acyclovir (IC50=1.90ug mL).
3-Epicabraleahydroxylactone has anti-tumor promoting effect, it has anti-carcinogenic activity by the inhibitory effect on the induction of Epstein-Barr virus early antigen(EBV-EA) by the tumor promoter.