Pimilprost (SM-10902) and its free acid, SM-10906 are new stable 3-oxa-methano prostaglandin (PG) I1 analogs, SM-10902 is a prodrug of SM-10906. SM-10906, but not SM-10902 was demonstrated to be an agonist for IP receptors. SM-10906 was shown to exert its anti-platelet and vasodilatory activities through the increase of the cAMP level. Pimilprost was being developed by Dainippon Sumitomo Pharma (formerly Sumitomo Pharmaceuticals) in Japan for the treatment of skin ulcers. In Japan, an NDA was filed for pimilprost and was awaiting registration. However, development appears to have been discontinued.

TAK-243 (MLN7243) is a small molecule inhibitor of ubiquitin-activating enzyme (UAE), with potential antineoplastic activity, which was developed by Takeda Oncology, Millennium. MLN7243 binds to and inhibits UAE, which prevents both protein ubiquitination and subsequent protein degradation by the proteasome. This inhibits tumor cell proliferation and survival. UAE, also called ubiquitin E1 enzyme (UBA1; E1), is more active in cancer cells than in normal, healthy cells. Currently, TAK-243 is in phase I clinical trial evaluating safety, tolerability, pharmacokinetics, pharmacodynamics against advanced malignant solid tumors phase.

Dexecadotril is powerful and selective inhibitor of neprilysin. It is anti-hypotensive agent. Dexecadotril was found to possess chemoprotective activity. It might be biologically active against multiple myeloma. It was under clinical evaluation as an intestinal antisecretatory agent.

Ampion (LMWF-5A) is a low molecular weight fraction of human serum albumin (HSA) currently being developed for the treatment of pain due to osteoarthritis of the knee. The primary constituent ingredient of Ampion is aspartyl-alanyl diketopiperazine, or DA-DKP, an endogenous immunomodulatory molecule derived from the N-terminus of HSA. Based on published pre-clinical and clinical research, DA-DKP plays a significant role in the regulation of inflammation. DA-DKP is believed to reduce inflammation by suppressing pro-inflammatory cytokine production in T-cells. Ampion also contains other known small molecules that confer anti-inflammatory effects to complement the activity of DA-DKP and derive demonstrated in-vitro and in-vivo effects. Ampio is currently developing Ampion as an intra-articular injection to treat osteoarthritis of the knee, and the final US pivotal trial is underway. Additional pre-clinical and clinical studies have been completed or are underway for Ampion and other chronic inflammatory conditions.