Teroxirone is a triazene triepoxide patented by Shell Internationale Research Maatschappij NV as an antineoplastic agent. Teroxirone alkylates and cross-links DNA, thereby inhibiting DNA replication. Teroxirone has good cytotoxic activity against sublines of P388 and L1210 leukemias resistant to another alkylating agent. In preclinical trials, Teroxirone shows potent antineoplastic activity against murine tumors. In clinical trials, Teroxirone shows good anticancer activity and high rate of adverse events including nausea, vomiting, and myelosuppression.

Sulfonterol is a benzenemethanol derivative patented by Smith Kline and French Laboratories as a bronchodilator. Sulfonterol acts as a β-adrenergic partial agonist.

NLG919 is a novel small-molecule IDO-pathway inhibitor. NLG919 potently inhibits this pathway in vitro and in cell-based assays. It is orally bioavailable and has a favorable pharmacokinetic and toxicity profile. In mice, a single oral administration of NLG919 reduces the concentration of plasma and tissue Kyn by ∼ 50%. Using IDO-expressing human monocyte-derived DCs in allogeneic MLR reactions, NLG919 potently blocked IDO-induced T cell suppression and restored robust T cell responses with an ED50=80 nM. Similarly, using IDO-expressing mouse DCs from tumor-draining lymph nodes, NLG919 abrogated IDO-induced suppression of antigen-specific T cells (OT-I) in vitro. In vivo, in mice bearing large established B16F10 tumors, administration of NLG919 markedly enhanced the anti-tumor responses of naïve, resting pmel-1 cells to vaccination with cognate hgp100 peptide plus CpG-1826 in IFA

ASP-543 (also known as YM-543), a selective inhibitor of the sodium-glucose cotransporter 2. This protein is specifically expressed in the kidney that plays an important role in renal glucose reabsorption, and its inhibition may present a novel therapeutic strategy for treating diabetes. ASP-543 participated in phase II clinical trials in Europe and in the USA for the treatment of Type 2 diabetes mellitus but these studies were discontinued.

R-1206 (also known as Elsulfavirine) is a phenylacetamide derivative patented by Roche Palo Alto LLC as non-nucleoside reverse transcriptase inhibitor (NNRTI) for treating retroviral infections. R-1206 is the prodrug of the active compound VM-1500A, a small molecule selective NNRTI, which prevents HIV replication. The antiviral activity of R-1206 is broad, with activity demonstrated towards various viral strains and clinical isolates of HIV, including those resistant to other NNRTIs. Furthermore, R-1206 was associated with a low probability of cross-resistance or resistance development, and a high genetic barrier to the development of resistant drug mutations. In clinical trials, R-1206 20 and 40 mg demonstrated superiority to efavirenz in terms of the effectiveness to reduce the level of viral load to 400 copies/mL after 12 weeks of therapy. R-1206 20 mg once daily is generally well tolerated in ART-naive HIV-1 infected patients.

GlaxoSmithKline was developing GSK-364735 as a human immunodeficiency virus (HIV) integrase inhibitor. The inhibition of viral DNA integration takes place by interacting at the two-metal binding site within the catalytic center of HIV integrase. GSK-364735 was successfully studied at Phase II in HIV-infected patients; however, adverse liver effects of GSK364735 were recently observed in a long-term preclinical safety study in the monkey and preclude further development of the compound.