Cyclo (L-leucyl-L-tryptophyl)

[1]Shiba T, et al. Some aspects of the relationship between the structure of a bitter diketopiperazine and its receptor. Biopolymers. 1981 Sep;20 (9) :1985-7. |[2]Kumar SN, et al. Purification, structural elucidation and bioactivity of tryptophan containing diketopiperazines, from Comamonas testosteroni associated with a rhabditid entomopathogenic nematode against major human-pathogenic bacteria. Peptides. 2014 Mar;53:48-58.|[3]Zubare-Samuelov M, et al. Some sweet and bitter tastants stimulate inhibitory pathway of adenylyl cyclase via melatonin and alpha 2-adrenergic receptors in Xenopus laevis melanophores. Am J Physiol Cell Physiol. 2003 Nov;285 (5) :C1255-62.