PD 124,895 and PD 124,966, two new antitumor antibiotics.

Abstract
The isolation and characterization of the title antibiotics, which are produced by the same Streptomyces sp., is described. The potent antitumor agent, PD 124, 895, is an analog of hydroxyelactocin (PD 114,721). PD 124,966 is a new member of the depsipeptide family of antibiotics.