pde4b-in-2

PDE4B-IN-2 (A 33) 是一种具有口服活性，选择性 PDE4B 抑制剂，IC50 为 15 nM。PDE4B-IN-2 抑制 PDE4D (IC50=1.7 µM)。PDE4B-IN-2 表现出有效的抗炎作用。

LEO 39652 is a dual-soft PDE4 inhibitor with IC50s of 1.2 nM, 1.2 nM, 3.0 nM and 3.8 nM for PDE4A, PDE4B, PDE4C and PDE4D, respectively. LEO 39652 also inhibits TNF-α with an IC50 value of 6.0 nM. LEO 39652 is used for topical research of Atopic dermatitis (AD) [1]. LEO 39652 shows unbound in vitro potency when measured as LPS induced TNF-α release in human peripheral blood mononuclear cells (PBMC), incubated in serum free medium. LEO 39652 shows a relatively high binding to human serum albumin[2]. LEO 39652 is inactivated both in blood and liver (dual-soft) while stabled in the skin[1].Pharmacokinetic AnalysisLEO 39652 exhibits total clearance (rats 930, minipigs 200 and monkey 300 mL min kg) and ratio to total AUC (rats 4, minipigs 6 and monkey 6 %) following intravenous administration (rats 0.075, minipigs 0.5 and monkeys 2.0 mg kg)[1]. [1]. Jens Larsen, et al. Discovery and Early Clinical Development of Isobutyl 1-[8-Methoxy-5-(1-oxo-3 H-isobenzofuran-5-yl)-[1,2,4]triazolo[1,5- a]pyridin-2-yl]cyclopropanecarboxylate (LEO 39652), a Novel Dual-Soft PDE4 Inhibitor for Topical Treatment of Atopic Dermatitis. J Med Chem. 2020 Dec 10;63(23):14502-14521.[2]. Stefan Eirefelt

PDE4B D-IN-2（样例19）作为PDE4的高效抑制剂，对PDE4B2和PDE4D展示出极低的IC50值，分别为0.023 nM和0.066 nM。