| http://www.w3.org/ns/prov#value | - idinyl, pyrimidinyl or purinyl; q=1 or 2; p, p' and p are integers between 0 and 6; R10 is H, methyl, ethyl, propyl, phenyl or substituted phenyl (preferably by Cl, F, NO2 or NH2) or an acyl radical having from 1 to 6 carbons, such as acetyl; and M2 and M3 =M1, COOH, CONH2, COOR3 or CN (preferably X is NH or O); R1 =H, alkyl (preferably C1 to C6 and most preferably C1 to C4), modified alkyl (pref
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