Patent ID: 6593319
Filing Date: 2003-07-15
Classification: A61P,C07J

Abstract:
A compound of the formula Ia: whereinQ1, Q2 and Q3 are the same or different and independently represent a â€”(CO)â€” group; a â€”(CHOH)â€” group; a â€”(CHOR)â€” group; a â€”(CASH)â€” group; a â€”(NH)â€” group; a â€”(CHNH2)â€” group; or a â€”(CHNHR)â€” group, wherein R represents an alkyl radical having 1 to 4 carbon atoms or an acyl radical having 1 to 4 carbon atoms; and wherein Q2 and Q3 may also independently represent a â€”(CH2)â€” group; Y represents hydrogen, hydroxy, an alkyl radical having 1 to 4 carbon atoms, or an acyl radical having 1 to 4 carbon atoms; A represents an oxygen or sulphur atom; R1 represents an alkyl radical having 1 to 4 carbon atoms, an olefinic group having 2 to 4 carbon atoms, a (C1-C6)acyl group, a (C3-C7)cycloalkylcarbonyl group or a benzoyl group, R1 optionally being substituted with one or more halogen atoms and/or hydroxy, alkoxy or azido groups; and pharmaceutically acceptable salts and easily hydrolysable esters thereof.