630413-95-5Relevant articles and documents
Process for preparing xanthine phosphodiesterase V inhibitors and precursors thereof
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Page 11, (2008/06/13)
A process for preparing xanthine phosphodiesterase V inhibitors, and compounds utilized in said process. The process includes a five-step methodology for efficient synthesis of Compound 5 without intermediate purifications or separations, a dihalogenation step to synthesize Compound 7, and a coupling reaction to produce Compound 9.