N-(Fluorenyl-9-methoxycarbonyl)leucine (NPC 15199) is an organic compound that demonstrates antiinflammatory effects. NPC 15199 and other N-(9-fluorenylmethoxycarbonyl)-protected amino acids are demonstrated to block recruitment of neutrophils into inflammatory lesions and to inhibit T-cell activation in vitro, and are classified as leumedins. N-(Fluorenyl-9-methoxycarbonyl)leucine is described to act as a chemically distinct ligand and modulator of PPARγ (peroxisome proliferator-activated receptor γ). N-(Fluorenyl-9-methoxycarbonyl)leucine is demonstrated to increase intracellular Ca2+ and to mobilize Ca2+ stores in human bladder female transitional cancer (BFTC) cells.