PMID- 24055079 OWN - NLM STAT- MEDLINE DCOM- 20140526 LR - 20131007 IS - 1464-3391 (Electronic) IS - 0968-0896 (Linking) VI - 21 IP - 21 DP - 2013 Nov 1 TI - Novel complex crystal structure of prolyl hydroxylase domain-containing protein 2 (PHD2): 2,8-Diazaspiro[4.5]decan-1-ones as potent, orally bioavailable PHD2 inhibitors. PG - 6349-58 LID - S0968-0896(13)00749-9 [pii] LID - 10.1016/j.bmc.2013.08.046 [doi] AB - We have discovered a novel complex crystal structure of the PHD2 enzyme with its inhibitor, the 2,8-diazaspiro[4.5]decan-1-one analogue 4b. The widely reported salt bridge between Arg383 of the enzyme and its inhibitors in all complex structures published thus far was not observed in our case. In our complex structure compound 4b forms several novel interactions with the enzyme, which include a hydrogen bond with Arg322, a pi-cation interaction with Arg322, a pi-pi stacking with Trp389, and a pi-pi stacking with His313. Guided by the structural information, SAR studies were performed on the 2,8-diazaspiro[4.5]decan-1-one series leading to the discovery of compound 9p with high potency and good oral pharmacokinetic profile in mice. CI - Copyright (c) 2013 Elsevier Ltd. All rights reserved. FAU - Deng, Guanghui AU - Deng G AD - Research and Development, GlaxoSmithKline Pharmaceuticals, 898 Halei Road, Zhangjiang Hi-tech Park, Pudong, Shanghai 201203, China. FAU - Zhao, Baowei AU - Zhao B FAU - Ma, Yingli AU - Ma Y FAU - Xu, Qiongfeng AU - Xu Q FAU - Wang, Hailong AU - Wang H FAU - Yang, Liuqing AU - Yang L FAU - Zhang, Qing AU - Zhang Q FAU - Guo, Taylor B AU - Guo TB FAU - Zhang, Wei AU - Zhang W FAU - Jiao, Yang AU - Jiao Y FAU - Cai, Xin AU - Cai X FAU - Zhang, Jinqiang AU - Zhang J FAU - Liu, Houfu AU - Liu H FAU - Guan, Xiaoming AU - Guan X FAU - Lu, Hongtao AU - Lu H FAU - Xiang, Jianing AU - Xiang J FAU - Elliott, John D AU - Elliott JD FAU - Lin, Xichen AU - Lin X FAU - Ren, Feng AU - Ren F LA - eng PT - Journal Article DEP - 20130903 PL - England TA - Bioorg Med Chem JT - Bioorganic & medicinal chemistry JID - 9413298 RN - 0 (Aza Compounds) RN - 0 (Prolyl-Hydroxylase Inhibitors) RN - 0 (Pyridines) RN - 0 (Spiro Compounds) RN - EC 1.14.11.2 (EGLN1 protein, human) RN - EC 1.14.11.29 (Hypoxia-Inducible Factor-Proline Dioxygenases) SB - IM MH - Administration, Oral MH - Animals MH - Aza Compounds/*chemistry MH - Binding Sites MH - Crystallography, X-Ray MH - Half-Life MH - Humans MH - Hypoxia-Inducible Factor-Proline Dioxygenases/*antagonists & inhibitors/metabolism MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Molecular Docking Simulation MH - Prolyl-Hydroxylase Inhibitors/chemical synthesis/*chemistry/pharmacokinetics MH - Protein Binding MH - Protein Structure, Tertiary MH - Pyridines/chemical synthesis/*chemistry/pharmacokinetics MH - Spiro Compounds/chemical synthesis/chemistry/pharmacokinetics MH - Structure-Activity Relationship OTO - NOTNLM OT - 2,8-Diazaspiro[4.5]decan-1-one OT - Hypoxia inducible factor (HIF) OT - PHD inhibitors OT - PHD2 crystal structure OT - Prolyl hydroxylase domain-containing protein 2 (PHD2) OT - SAR study EDAT- 2013/09/24 06:00 MHDA- 2014/05/27 06:00 CRDT- 2013/09/24 06:00 PHST- 2013/08/08 00:00 [received] PHST- 2013/08/24 00:00 [revised] PHST- 2013/08/24 00:00 [accepted] PHST- 2013/09/24 06:00 [entrez] PHST- 2013/09/24 06:00 [pubmed] PHST- 2014/05/27 06:00 [medline] AID - S0968-0896(13)00749-9 [pii] AID - 10.1016/j.bmc.2013.08.046 [doi] PST - ppublish SO - Bioorg Med Chem. 2013 Nov 1;21(21):6349-58. doi: 10.1016/j.bmc.2013.08.046. Epub 2013 Sep 3.