Christian Kuttruff

Ziretaxestat, an oral autotaxin (ATX) inhibitor originated by Galapagos, once garnered excitement as the first molecule to complete a Ph. III clinical program in idiopathic pulmonary fibrosis since the approvals of nintedanib and pirfenidone. Following the disappointing clinical data and discontinuation of the molecule, this annotation revisits ziritaxestat in the context of other inhibitors, recaps the therapeutic hypothesis and how it was discovered, summarizes notable molecular properties for drug discovery scientists, and discusses what happened and what’s next.

MK-1454 (Merck) is an intratumoral stimulator of interferon (IFN) genes (STING) agonist that is being developed for treatment of advanced solid tumors and lymphomas. The molecule follows Aduro’s ADU-S100 , which was terminated after Ph. II due to a lack of substantial activity. Another chemotype of STING agonist, Eisai’s E7766 , has [...]

We asked the global drug discovery community to nominate and vote on their favorite molecule from 2021, and the results are in. The 2021 choice for Drug Hunter’s Small Molecule of the Year is Pfizer’s CoV-2 M pro Inhibitor, PF-07321332 (nirmatrelvir, Paxlovid) . Published in a November 2021 Science article , the molecule was praised for its [...]

Pfizer’s PF-07321332 (API of Paxlovid) is an oral, reversible covalent SARS-CoV-2 main protease inhibitor, which received emergency use authorization from the FDA for Covid treatment at the end of 2021. Clinical data showed Paxlovid reducing Covid hospitalization and death by 89%. It was nominated for November’s cover by Mike Koehler [...]

CC-90001 was nominated by reviewer Christian Kuttruff . CC-90001 is a JNK (c-Jun N-Terminal Kinase) inhibitor and a Phase II clinical candidate for idiopathic pulmonary fibrosis ( NCT03142191 ). Christian says, “Preclinical evidence suggests that c-Jun N-terminal kinase (JNK) enzyme function is required for key steps in the pulmonary fibrotic [...]

This month’s cover molecule, Pfizer’s PF-07321332 (nirmatrelvir, API of Paxlovid) is an oral, reversible covalent SARS-CoV-2 main protease inhibitor, which has been submitted to the FDA by Pfizer for emergency approval for Covid treatment. Interim data showed Paxlovid reducing Covid hospitalization and death by 89%. It was nominated for this month’s [...]

The Genentech VPS34 kinase inhibitor, compound 5, is a selective kinase inhibitor that is unusually polar for a kinase inhibitor (logD = 1.0, PPB = 23%) but maintains low clearance. The article was nominated by reviewers Joachim Rudolph, Callie Bryan, Christian Kuttruff, and Julien Lefranc for its interesting tricyclic structure and [...]

This month’s cover molecule, BMS-986278 , is an LPA 1 antagonist and oral (up to 125 mg BID) Ph. II clinical candidate for idiopathic pulmonary fibrosis (IPF) (NCT04308681). Reviewer and nominator Christian Kuttruff says: “While there are two approved molecules for the treatment of IPF (pirfenidone from Roche and nintedanib from BI), there is [...]

The first disclosures of new drug candidates are always the highlight of medicinal chemistry conferences. Six novel drug candidates were recently disclosed by European companies at the European Federation for Medicinal Chemistry International Symposium on Medicinal Chemistry (EFMC-ISMC) Conference in [...]

Recently, our team at Drug Hunter compiled the lead programs and mechanisms of small molecule and large molecule biotechs that IPO’d in 2020. We asked featured reviewers from our community what stood out to them about the science of this group of companies, and here are some highlights that emerged from the discussion. Any thoughts and [...]

This article introduces the Topliss tree and Topliss schemes for analog synthesis, illustrates when they might be useful, and provides easy-to-use posters or "cheat sheets" of the original schemes. By Christian Kuttruff Why are the Topliss Tree and Topliss Schemes Useful? Imagine you’re on a new project that has just conducted a chemical [...]