[Leu3]-Oxytocin, an oxytocin analogue, is a derivative of oxytocin wherein the leucine amino acid (Leu) has been substituted at the 3rd position in the sequence.
GW837016X, also known as NEU-391, is a potent inhibitor of protozoan parasite proliferation. GW837016X extended life of treated mice by 50%, compared to untreated controls. At the cellular level, GW837016X inhibited mitosis and cytokinesis in T. brucei.