Applications of 2,3-dihydro[1,5] benzothiazepine compounds or salts thereof in preparation of GSK-3beta inhibitor
A technology of benzothiazepine and hetero compounds, which is applied in the field of medicinal chemistry of the present invention and can solve problems such as inactivation
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Embodiment 1
[0040] Example 1: Preparation of 5-benzyl-2,3-dihydro-2-(2-furan)[1,5]benzothiazepine -4-keto (CYbc)
[0041] (a). Preparation of 2-furan acrylic acid
[0042]
[0043] Malonic acid (20.8g, 0.2mol), furfural (16.6ml, 0.2mol), pyridine (10ml, 0.12mol) and 0.5mL piperidine were uniformly mixed, stirred and refluxed for 2 hours. Ammonia water was adjusted to make alkaline, hydrochloric acid was added to the water phase to make it acidic, the solid was collected, washed with water until neutral, and recrystallized with 50% ethanol / water solution to obtain 18.95 g of colorless crystals, with a yield of 69%. through 1 HNMR and MS confirmed the structure. 1 HNMR (400MHz, CDCl 3 ): δppm: 6.32 (d, 1H, J = 16.04Hz, = C H-COOH); 6.49-6.50 (dd, 1H, J = 1.96Hz, J = 3.52Hz, furan-4H); 6.68 (d, 1H, J = 3.13Hz, furan-3H); 7.52 (d, 1H, J =15.56Hz, furan-5H); δ7.52 (d, 1H, J=1.96Hz, -CH=CH-COOH). MS (-ESI): 137.1 (M-H) - , 275.0(2M-H) - .
[0044] (b).2,3-dihydro-2-(2-furyl)[1,5]be...
Embodiment 2
[0051] Example 2: Preparation of 5-(4-chlorobenzyl)-2,3-dihydro-2-(2-furyl)[1,5]benzothiazepine -4-keto (HZaa)
[0052] White needle crystals, yield 94%. 1 HNMR (400MHz, CDCl 3 ): δppm: 7.47 (d, 1H, J = 7.6Hz); 7.40 (td, 1H, J = 7.0, 1.3Hz); 7.29 (d, 1H, J = 4.4Hz); 7.24 (s, 2H); 7.23 (s, 2H); 7.20 (d, 1H, J = 3.6Hz); 7.18 (t, 1H, J = 7.5Hz); 5.99 (d, 1H, J = 3.0); 5.25 (d, 1H, J = 15.2 Hz); 4.86 (d, 1H, J=15.2Hz); 4.90-4.85 (m, 1H); 2.91-2.79 (m, 2H,). MS (API-ES); m / z 370.0 (M + +H), 392.1 (M+Na).
Embodiment 3
[0053] Example 3: Preparation of 5-(3-chlorobenzyl)-2,3-dihydro-2-(2-furyl)[1,5]benzothiazepine -4-keto (HZah)
[0054] Pale yellow solid, yield 85%. 1 HNMR (400MHz, CDCl 3 ): δppm: 2.81-2.93 (m, 2H, -CH 2 -); 4.87-4.91(m, 1H); 4.93(d, 1H, J=15.21Hz, AB); 5.19(d, 1H, J=15.30Hz, AB); 6.00(d, 1H, J=2.96Hz ); 6.26 (s, 1H); 7.16-7.49 (m, 9H, PhH). MS (+ESI): 370.0 (M+H) + .
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