Do 4-desmethylpapaverine, 6-desmethylpapaverine and 4,6-didesmethylpapaverine form diglucuronides at the 4' and 6' positions?

11 November 2013 0 8K Report

The desmethylation of papaverine forms 4'- and 6'- desmethylpapaverine, as well as 4',6'-didesmethylpapaverine. These go on to form desmethylpapaverine-4-glucuronide and desmethylpapaverine-6-glucuronide, but is there any evidence of a desmethylpapaverine -4,6-diglucuronide?

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