Application of benzo-six-membered ring derivatives as DPP-4 long-acting inhibitors
A kind of DPP-4, inhibitor technology, applied in the application field of medicine
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Embodiment 1
[0049] Example 1. Synthesis of Compounds
[0050] The compound of the present invention was synthesized with reference to the applicant's prior application CN 105566276A.
Embodiment 2
[0051] Embodiment 2. In vivo long-acting activity experiment (0.3mg / kg)
[0052] Instrument: microplate reader (PerkinElmer, USA).
[0053] Materials: Human recombinant DPP-4, which was expressed in insect cells by using the baculovirus expression system Bac-to-Bac (purchased from GIBCO) in our laboratory according to conventional experimental techniques; the substrate Ala-Pro-AMC was obtained by Synthesized by Jill Biochemical (Shanghai) Company.
[0054] Principle of activity test: DPP-4, DPP-8 and DPP-9 can specifically hydrolyze the substrate Ala-Pro-AMC to generate product AMC, AMC is excited by 355nm ultraviolet light to produce 460nm emission light, dynamic measurement unit time 460nm wavelength The fluorescence value changes linearly at the position, and the DPP-4 activity is calculated.
[0055] Sample treatment: The sample was dissolved in DMSO and stored at low temperature. The concentration of DMSO in the final system was controlled within the range that did not ...
Embodiment 3
[0060] Example 3. DPP-4 Activity Study in Normal ICR Mice (Dose Dependency)
[0061] Animal: ICR mouse (8-10 weeks old, sex: male, body weight 25g-30g, purchased from Shanghai Slack Experimental Animal Center).
[0062] Steps: ICR mice were starved for 2h, orally administered test compound (0.03, 0.1, 0.3, 1 and 3mg / kg), positive drug MK-3102 (0.03, 0.1, 0.3, 1 and 3mg / kg); As a blank control, before oral administration, 1h, 2h, 4h, 8h, 24h, 48h, 72h, 96h, 120h, 144h and 168h after oral administration, blood was taken from the mouse orbital plexus vein, and added to an Eppendorf tube (Qizhong Industrial Co., Ltd. (Shanghai) Co., Ltd.), the serum was taken after centrifugation, and the DPP-4 activity was determined.
[0063] Results: Within 48 hours after a single administration of HL012, HL012 can significantly inhibit the DPP-4 activity of normal ICR in vivo, and presents a significant dose-dependent manner, in which HL012 0.3mg / kg and 1mg / kg DPP-4 within 2 hours after admin...
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