Abstract:
:In this work, a series of structurally novel benzoxaborole derivatives were designed, synthesized and biologically evaluated as PDE4 inhibitors for battling atopic dermatitis (AD). Among them, the majority exhibited superior PDE4B inhibitory activities to that of the lead compound Crisaborole, an approved PDE4 inhibitor. In particular, 72, the most potent PDE4B inhibitor throughout this series, displayed 136-fold improved enzymatic activity (IC50 = 0.42 nM) as compared to Crisaborole (IC50 = 57.20 nM), along with favorable isoform specificity. In the phorbol ester (PMA)-induced mouse ear oedema model, 72 exerted remarkably greater efficacy than Crisaborole at the same dosage (P < 0.05). Moreover, the ointment of 72 exerted dramatically enhanced therapeutic potency than the ointment of Crisaborole (P < 0.05) in the calcipotriol-induced mouse AD model. In addition to the potent in vitro and in vivo activity, 72 displayed favorable safety in the repeated oral dose toxicity study and did not exhibit phototoxicity. With the above attractive biological performance, 72 is worthy of further functional investigation as a novel anti-AD therapeutic agent.
journal_name
Eur J Med Chemjournal_title
European journal of medicinal chemistryauthors
Chu Z,Xu Q,Zhu Q,Ma X,Mo J,Lin G,Zhao Y,Gu Y,Bian L,Shao L,Guo J,Ye W,Li J,He G,Xu Ydoi
10.1016/j.ejmech.2021.113171subject
Has Abstractpub_date
2021-01-12 00:00:00pages
113171eissn
0223-5234issn
1768-3254pii
S0223-5234(21)00020-9journal_volume
213pub_type
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