138655-14-8

Citreoindole is cytotoxic in vitro against HeLa cells.

Citreoindole is a diketopiperazine metabolite isolated from a hybrid cell fusion of two strains of P. citreovirde that is cytotoxic in vitro against HeLa cells at 8.4 μM.

[1] Matsunaga, et al. Isolation and structure of citreoindole, a new metabolite of hybrid strain KO 0052 derived from Penicillium citreo-viride B. IFO 6200 and 4692. Tetrahedron Lett. 32(47), 6883-6884 (1991).