Synthesis method and application of multi-target A beta oligomerization inhibitor
An inhibitor, multi-target technology, applied in the field of synthesis of multi-target Aβ oligomerization inhibitors, can solve the problems of product performance to be improved, complex synthesis method, etc., and achieve the effect of simple and reliable route and high yield
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Embodiment 1
[0045] Example 1: Synthesis of N1-(3-(1H-imidazol-1-yl)propyl)-N2-((1-benzyl-4-yl)methyl)benzene-1,2-diamine, which The synthetic route is as follows:
[0046]
[0047] a, 3N1-((1-benzyl-4-yl)methyl)benzene-1,2-diamine (II) synthesis: bromoaniline (5.81mmol, 1equiv), (1-benzylpiperidine- 4-yl)methylamine (6.98mmol, 1.2equiv) was dissolved in dioxane (10ml) and 2mol / L potassium carbonate (10ml) mixed solution, adding catalyst [1,1'-bis(diphenylphosphine) Ferrocene] dichloropalladium (II) dichloromethane complex (0.3486mmol, 0.06equiv); ventilation, so that the whole device is filled with argon; the mixed system was refluxed at 100°C for 3h, and extracted 3 times with ethyl acetate , combined organic phase, washed once with saturated NaCl solution, anhydrous NaCl 2 SO 4 After drying, the product was collected by silica gel column chromatography with a yield of 90%.
[0048] b. Synthesis of N1-((1-benzyl-4-yl)methyl)-N2-(3-bromopropyl)benzene-1,2-diamine (Ⅲ): 3N1-((1-benzy...
Embodiment 2
[0050] Example 2: Synthesis of N2-(3-(1H-imidazol-1-yl)propyl)-N3-((1-benzyl-4-yl)methyl)naphthalene-2,3-diamine, which The synthetic route is as follows:
[0051]
[0052]
[0053] a, N2-((1-benzyl-4-yl)methyl)naphthalene-2,3-diamine (II) synthesis: 3-bromo-2-naphthylamine (5.81mmol, 1equiv), (1 -benzylpiperidin-4-yl)methanamine (6.98mmol, 1.2equiv) was dissolved in dioxane (15ml) and 2mol / L potassium carbonate (10ml) mixture, and catalyst [1,1′-bis (Diphenylphosphine) ferrocene] dichloropalladium (II) dichloromethane complex (0.3486mmol, 0.06equiv); ventilation, so that the whole device is filled with argon; the mixed system was refluxed at 100°C for 4h, Extracted three times with ethyl acetate, combined organic phase, washed once with saturated NaCl solution, anhydrous NaCl 2 SO 4 After drying, the product was collected by silica gel column chromatography with a yield of 88%.
[0054] b. Synthesis of N2-((1-benzyl-4-yl)methyl)-N3-(3-bromopropyl)naphthalene-2,3-dia...
Embodiment 3
[0056] Example 3: N1-(3-(1H-imidazol-1-yl)propyl)-N2-((1-benzyl-4-yl)methyl)benzene-1,2-diamine on Aβ oligomerization Chemical inhibition:
[0057] like figure 2 As shown, it is N1-(3-(1H-imidazol-1-yl)propyl)-N2-((1-benzyl-4-yl)methyl)benzene-1,2-diamine to Aβ42 oligo Comparison diagram of polymerization inhibition, in which, 1 is the protein marker; 2-3 is the control group; 4-5 is the sample addition group.
[0058] Prepare the DMSO monomer stock solution (1mM) of Aβ42 immediately before use, and prepare N1-(3-(1H-imidazol-1-yl)propyl)-N2-((1-benzyl-4-yl)methyl)benzene -1,2-diamine in DMSO stock solution (1 mM), take 4 μL Aβ42 stock solution and 4 μL N1-(3-(1H-imidazol-1-yl)propyl)-N2-((1-benzyl-4-yl )Methyl)benzene-1,2-diamine mother solution was mixed, 2 μL of 1% SDS solution was added, the total volume was adjusted to 15 μL with PBS buffer solution, incubated at 37°C for 6 and 12 hours, and SDS-PAGE analysis was carried out after sampling (15% separating gel). The ...
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