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  • Title: Discovery of liver-targeted inhibitors of stearoyl-CoA desaturase (SCD1).
    Author: Deng Y, Yang Z, Shipps GW, Lo SM, West R, Hwa J, Zheng S, Farley C, Lachowicz J, van Heek M, Bass AS, Sinha DP, Mahon CR, Cartwright ME.
    Journal: Bioorg Med Chem Lett; 2013 Feb 01; 23(3):791-6. PubMed ID: 23265904.
    Abstract:
    Inhibitors based on a benzo-fused spirocyclic oxazepine scaffold were discovered for stearoyl-coenzyme A (CoA) desaturase 1 (SCD1) and subsequently optimized to potent compounds with favorable pharmacokinetic profiles and in vivo efficacy in reducing the desaturation index in a mouse model. Initial optimization revealed potency preferences for the oxazepine core and benzylic positions, while substituents on the piperidine portions were more tolerant and allowed for tuning of potency and PK properties. After preparation and testing of a range of functional groups on the piperidine nitrogen, three classes of analogs were identified with single digit nanomolar potency: glycine amides, heterocycle-linked amides, and thiazoles. Responding to concerns about target localization and potential mechanism-based side effects, an initial effort was also made to improve liver concentration in an available rat PK model. An advanced compound 17m with a 5-carboxy-2-thiazole substructure appended to the spirocyclic piperidine scaffold was developed which satisfied the in vitro and in vivo requirements for more detailed studies.
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