| 摘要 |
<p>Novel esters of acetylsalicylic acid with oligomers of [R] or [R,S] 3-hydroxybutyric acid according to the invention are presented in formula 1, where n equals from 2 to 25. The method of obtaining compounds with formula 1, where n equals from 2 to 25, according to the invention, consists in converting acetylsalicylic acid, preferably with the use of sodium or potassium hydride or hydroxide, into monosodium or monopotassium salt in organic solvent, preferably dimethyl sulfoxide (DMSO), and obtained salts are reacted with â-butyrolactone causing the opening of lactone ring, forming ester bond as a result of C-O bond cleavage in the lactone and polymerization of the lactone, the formed oligomer serving as drug carrier.</p> |
