METHOD FOR PREPARING 5,8,9,10-TETRAHYDROPYRIMIDINO[4,5-d]AZOCINE DERIVATIVES HAVING TRIFLATE, SECONDARY AND TERTIARY AMINO GROUPS IN 4-TH POSITION Russian patent published in 2013 - IPC C07D487/04 A61P25/28 

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention refers to producing new 5,8,9,10-tetrahydropyrimido[4,5-d]azocine derivatives having triflate, secondary and tertiary amino groups in the 4th position of general formula specified below. In general structural formula: 2-12 2 X=OTf (Tf means triflate), X means NR¹R2² related to the groups 3-12

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The method consists in the fact that 6-isopropyl-2-phenyl-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4(3H)-one reacts with methyl propyolate in methanol at room temperature to produce methyl 8-isopropyl-4-oxo-2-phenyl-5,8,9,10-tetrahydropyrimido[4,5-d]azocine-6-carboxylate (1). Thereafter, the prepared compound reacts with triftalane hydride in dichloromethane in the presence of pyridine at t°=-10°C; it is recovered and purified with by means of column chromatography to prepare methyl 8-isopropyl-2-phenyl-4-{[(trifluoromethyl)sulphonyl]oxy}-5,8,9,10-tetrahydropyrimido[4,5-d]azocine-6-carboxylate (2); then the solution I mmole of the prepared product (2) in absolute dioxide is added with 2 mmole of K₂CO₃ and 1.5 mmole of appropriate amine. After being boiled for two hours and removing the solvent, respective 4-amino substituted 5,8,9,10-tetrahydropyrimido[4,5-d]azocine of formula 3-12 is prepared. The method is directed to prepare the products in the form of white or yellow powder, or in the form of drying oil.

EFFECT: after the primary screening, the compounds appeared to be acetyl- and butyrylcholin esterase inhibitors and can find application as scaffolds in searching the preparations for treating neurodegenerative diseases.

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