Arvenin I is a natural cucurbitacin glucoside with moderate anticancer effects[1].
References
[1] Chau Van Minh, et al. Chemical constituents of Trichosanthes kirilowii and their cytotoxic activities. Arch Pharm Res. 2015 Aug;38(8):1443-8. DOI:10.1007/s12272-014-0490-6