Novel substituted thiophenepyrimidinone derivatives as inhibitors of 17beta-hydroxysteroid dehydrogenase
A hydroxyl and substituent technology, applied in the field of thienyl pyrimidone derivatives, can solve problems such as insolubility and membrane permeability difficulties
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[0382] In order to more fully illustrate the nature of the invention and the mode of carrying it out, the following examples are provided but should not be construed as limiting.
[0383] Preparation of the following No.1 to No.17 compounds falling within the scope of general formula (I):
[0384] Compound No.1: 3-Benzyl-5-methyl-2-(3,4,5-trimethoxyphenyl)-5,6,7,8-tetrahydro-3H-benzo[4,5 ]thieno[2,3-d]pyrimidin-4-one
[0385]
[0386] 2-Amino-4-methyl-4,5,6,7-tetrahydro-benzo[b]-thiophene-3-carboxylic acid ethyl ester (26.6mmol, 100mol-%) and N-benzyl-3, 4,5-Trimethoxy-benzamide (34.6 mmol, 130 mol-%) was dissolved in anhydrous 1,2-dichloroethane. Cool the reaction mixture with an ice-salt bath, add POCl 3 (1.7ml, 24.6mmol, 130mol-%). The reaction mixture was refluxed for 24 hours. Add POCl twice during reflux 3 (340 μl). The reaction mixture was poured into ice water, and after neutralization with sodium acetate, the product was extracted into dichloromethane. The ...
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