| http://www.w3.org/ns/prov#value | - X and Y are reactive functional groups selected from the group consisting of mesylate, tosylate, tresylate, ???O???(CH2)n???CO2H where n=1-6, ???O???(CH2)n???CO2R3 where n=1-6 and R3 is an alkyl group, ???NHR4 where R4 is H or alkyl or an amine protecting group such as t-Boc and Fmoc, ???O???(CH2)n???CH(ZR5)2 where n is a number of 1-6, and Z is O or S, R5 is H or an alkyl group, Ar???CH???CH???CH
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