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isaphttp://webisa.webdatacommons.org/prov/
isahttp://webisa.webdatacommons.org/
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provhttp://www.w3.org/ns/prov#
xsdhhttp://www.w3.org/2001/XMLSchema#
n5freepatentsonline.
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isa:389861276
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R5 and R7 are especially preferably hydrogen or a methyl or ethyl radical, in particular hydrogen.The inventive compounds of general formula (I) are produced by reacting the compounds of general formula (III) with compounds of general formulas R1???C(???O)???R2 and R3???C(???O)???R4 with ring closure.
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