Pyrrolidine, also known as tetrahydropyrrole, is a saturated five-membered heterocyclic ring, which is miscible with water. Pyrrolidine exists in many alkaloids and drug molecules, such as kappa opioids, antagonists of dopamine D4 receptors, and HIV reverse transcriptase inhibitors.
Azetidines are an important class of saturated four-membered nitrogen-containing heterocyclic compounds. The research hotspots related to this structure mainly focus on two aspects: one is the research of pharmaceutical chemistry; the other is related to chiral azetidines, using rigid azetidine compounds as chiral ligands for asymmetric catalytic reactions. Many nitrogen-containing heterocycles play important roles in drug structures, and in many cases small structural changes can improve ligand selectivity and pharmacokinetic properties.
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Positive phase 3 head-to-head data results from DELTA FORCE trial comparing delgocitinib cream with alitretinoin capsules in adults with severe chronic hand eczema (CHE). Delgocitinib cream demonstrated a superior reduction in Hand Eczema Severity Index score from baseline to Week 12 compared to alitretinoin capsules as its primary outcome measure.
Delgocitinib cream is an investigational, first-in-class, topical pan-Janus kinase (JAK) inhibitor for CHE. It inhibits the activation of JAK-STAT signaling, which plays a key role in the pathogenesis of CHE.