Myriocin ((2S,3R,4R,6E)-2-amino-3,4- dihydroxy-2-(hydroxymethyl)-14-oxo-6-eicosenoic acid, ISP-1, thermozymocidin) is a small-molecule immunosuppressant, isolated from the Mycelia sterilia thermophilic fungus. Myriocin inhibits serine palmitoyltransferase (SPT) at picomolar concentrations blocking synthesis of ceramide, a precursor of sphingomyelin (SM) and glycosphingolipids. Inhibition of hepatic serine palmitoyl transferase reduces plasma sphingomyelin levels in the absence of changes in cholesterol or triglyceride (TG) concentration and this leads to a reduction of atherosclerosis. In preclinical studies, Myriocin treated mice shows significant reductions in both plasma SM and Glycosphingolipids (GSL) concentration. Moreover, SM and GSL concentrations were significantly correlated, indicating that SPT inhibition suppresses the synthesis of both these sphingolipids concomitantly. The inhibition of atherosclerosis induced by myriocin was not associated with changes in plasma cholesterol or TG concentrations or lipoprotein profiles.

Boldine, an aporphine alkaloid, found abundantly in the leaves/bark of boldo (Peumus boldus Molina) widely consumed in the folk medicine of some regions. Boldine possesses various pharmacological properties including, anticancer activity. It exhibits a significant improvement of learning and memory through inhibition of brain acetylcholinesterase activity and alleviation of brain oxidative stress, which was shown on animal models. Boldine is a potentially useful agent for the treatment of leishmaniosis. In addition, it suppresses osteoclastogenesis, improves bone destruction and may be a potential therapeutic agent for rheumatoid arthritis. Besides, was shown, that boldine inhibits telomerase in cells treated with sub-cytotoxic concentrations. Telomerase inhibition occurs via down-regulation of human telomerase reverse transcriptase (hTERT), the catalytic subunit of the enzyme.

Cyclocreatine is a nearly planar creatine analog. Cyclocreatine is an efficient substrate for creatine kinase, but its phosphorylated form is a poor phosphate donor in comparison with creatine phosphate. It exerts antitumor, antiviral, neuroprotective activity.

Tauroursodeoxycholic acid (TUDCA) is an endogenous hydrophilic bile acid used clinically to treat certain liver diseases. It is approved in Italy and Turkey for the treatment of cholesterol gallstones and is an investigational drug in China, Unites States, and Italy. Tauroursodeoxycholic acid is being investigated for use in several conditions such as Primary Biliary Cirrhosis (PBC), insulin resistance, amyloidosis, Cystic Fibrosis, Cholestasis, and Amyotrophic Lateral Sclerosis. Tauroursodeoxycholate (TUDC) promote choleresis by triggering the insertion of transport proteins for bile acids into the canalicular and basolateral membranes of hepatocytes. In addition, Tauroursodeoxycholate exerts hepatoprotective and anti-apoptotic effects, can counteract the action of toxic bile acids and reduce endoplasmic reticulum stress. Tauroursodeoxycholate can also initiate the differentiation of multipotent mesenchymal stem cells (MSC) including hepatic stellate cells and promote their development into hepatocyte-like cells. Although the hepatoprotective and choleretic action of TUDC is empirically used in clinical medicine since decades, the underlying molecular mechanisms remained largely unclear.

GBT440 (previously GTx011) is a potent and direct drug for sickle cell treatment. In sickle cell anemia, abnormal hemoglobin molecules are formed, which causes problems for the flow of blood and oxygen through the body. GBT440 can selectively bind to hemoglobin, thereby increasing its affinity for oxygen. By inhibiting hemoglobin polymerization, it also prevents deformation of the red blood cells. GBT440, renamed Voxelotor, is thought to help prevent sickle cells blocking blood vessels, and therefore reduces pain (sickle cell crisis) experienced by patients. GBT440 is well absorbed following intravenous and oral administration, and quickly partitions into the red blood cell with a small part re‐distributed into the plasma. GBT440 was well tolerated in a randomized, placebo‐controlled, double blind, parallel group phase I/II study in healthy volunteers and sickle cell disease patients. Headache is the most reported adverse event related to the use of this drug, and no serious adverse events are known. A phase 3 clinical trial examining the efficacy and safety of the drug (compared to placebo) is planned to be completed in 2019. Voxelotor was also studied as a potential therapy for treatment of low oxygen levels in the blood of idiopathic pulmonary fibrosis patients, but this program was discontinued because of a lack of clinical benefits.

Diphencyprone (DPCP) is a potent topical sensitizing agent that has been used since the late 1970s by physicians for the treatment of alopecia areata (AA), viral warts (human papillomavirus) and cutaneous metastases of melanoma. Although to date the compound is not approved as a drug by the FDA or EMA, physicians have continued to use DPCP because of its proven effects in these dermatological conditions. Diphenylcyclopropenone acts as a local irritant, triggering a local sensitization. It triggers an immune response that opposes the action of the autoreactive cells that otherwise cause hair loss. The efficacy of DPCP has generally been ascribed to immunological reactions by the host. Inducing inflammation with a contact sensitizer is counterintuitive to treating AA, an autoimmune disorder. Studies using microarray and miRNA profiling may provide information about how DPCP induces inflammation in human skin at different times. Gene targets and microRNAs identified through these data may be modulated by an RNA interference approach to enhance DPCP efficacy and response rates

Copanlisib, developed by Bayer, is a phosphoinositide 3-kinase (PI3K) inhibitor with potential antineoplastic activity. Copanlisib inhibits the activation of the PI3K signaling pathway, which may result in inhibition of tumor cell growth and survival in susceptible tumor cell populations. Activation of the PI3K signaling pathway is frequently associated with tumorigenesis and dysregulated PI3K signaling may contribute to tumor resistance to a variety of antineoplastic agents. Copanlisib is currently under Phase II/III clinical trials for the treatment of non-Hodgkin lymphoma and chronic lymphocytic leukemia.