856850-18-5Relevant articles and documents
Rational Design of 2-Chloroadenine Derivatives as Highly Selective Phosphodiesterase 8A Inhibitors
Huang, Yadan,Wu, Xu-Nian,Zhou, Qian,Wu, Yinuo,Zheng, Dongxiao,Li, Zhe,Guo, Lei,Luo, Hai-Bin
, p. 15852 - 15863 (2020/12/23)
To validate the hypothesis that Tyr748 is a crucial residue to aid the discovery of highly selective phosphodiesterase 8A (PDE8A) inhibitors, we identified a series of 2-chloroadenine derivatives based on the hit clofarabine. Structure-based design targeting Tyr748 in PDE8 resulted in the lead compound 3a (IC50 = 0.010 μM) with high selectivity with a reasonable druglike profile. In the X-ray crystal structure, 3a bound to PDE8A with a different mode from 3-isobutyl-1-methylxanthine (a pan-PDE inhibitor) and gave a H-bond of 2.7 ? with Tyr748, which possibly interprets the 220-fold selectivity of 3a against PDE2A. Additionally, oral administration of compound 3a achieved remarkable therapeutic effects against vascular dementia (VaD), indicating that PDE8 inhibitors could serve as potential anti-VaD agents.
One-pot directed alkylation/deprotection strategy for the synthesis of substituted pyrrole[3,4-d]pyridazinones
Nair, Reji N.,Bannister, Thomas D.
, p. 1764 - 1770 (2015/05/27)
In the course of a structure-activity relationship study of pyrrole[3,4-d]pyridazinones, we optimized conditions for a one-pot directed lithiation/alkylation reaction that also promoted in situ cleavage of a tert-butoxycarbonyl (Boc) protecting group on t