Abstract: This invention is directed to the analogs of viscosin, pharmaceutical compositions thereof and to methods of using viscosin and analogs thereof as biosurfactants and as antibacterial, antiviral and antitrypanosomal therapeutic compounds. In particular, compositions that inhibit the growth of the pathogens Mycobacterium tuberculosis, Herpes Simplex Virus 2 and/or Trypanosoma cruzi are disclosed.

Abstract: Bombesin is an amphibian peptide that has a structure closely related to that of several mammalian peptides, including Gastrin Releasing Peptide (GRP) and Neuromedins B and C. Bombesin, GRP and related peptides exert their in vivo effects by binding to specific receptors present on cells of the gastrointestinal tract, the central nervous system, and tumors. The invention relates to novel bombesin derivatives which act as bombesin receptor antagonists by blocking the binding of bombesin, GRP or related peptides to cellular receptors. By blocking the binding of bombesin, GRP and related peptides to cellular receptors on cancer cells, these antagonists inhibit the growth of tumor cells that respond to the growth-promoting action of bombesin. These antagonists are expected to block the binding of bombesin, GRP or related peptides to similar receptors on cells in the gastrointestinal tract or the central nervous system.

Abstract: This invention is directed to the analogs of viscosin, pharmaceutical compositions thereof and to their use as antibacterial, antiviral and antitrypanosomal therapeutic compounds.