Exploration of Diazaspiro Cores as Piperazine Bioisosteres in the Development of σ2 Receptor Ligands.

Exploration of Diazaspiro Cores as Piperazine Bioisosteres in the Development of σ2 Receptor Ligands.
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DOI:
10.3390/ijms23158259
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发表时间:
2022-07-27
影响因子:
5.6
通讯作者:
Mach, Robert H.
Mach, Robert H.
中科院分区:
生物学2区
文献类型:
--
作者:
Xu, Kuiying;Hsieh, Chia-Ju;Lee, Ji Youn;Riad, Aladdin;Izzo, Nicholas J.;Look, Gary;Catalano, Susan;Mach, Robert H.

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A series of σ2R compounds containing benzimidazolone and diazacycloalkane cores was synthesized and evaluated in radioligand binding assays. Replacing the piperazine moiety in a lead compound with diazaspiroalkanes and the fused octahydropyrrolo[3,4-b] pyrrole ring system resulted in a loss in affinity for the σ2R. On the other hand, the bridged 2,5-diazabicyclo[2.2.1]heptane, 1,4-diazepine, and a 3-aminoazetidine analog possessed nanomolar affinities for the σ2R. Computational chemistry studies were also conducted with the recently published crystal structure of the σ2R/TMEM97 and revealed that hydrogen bond interactions with ASP29 and π-stacking interactions with TYR150 were largely responsible for the high binding affinity of small molecules to this protein.
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