2-Thiopheneacetic acid → 3-[2-(4-Nitrophenyl)ethyl]-1-propyl-8-[(thiophen-2-yl)methyl]xanthine

Beteiligte Stoffe

Reaktionsschritte

By the method of Example 2, 2-thiopheneacetic acid is reacted with 5,6-diamino -1-[2-(4-nitrophenyl)ethyl]-3-propyluracil (6) to yield 3-[2-(4-nitrophenyl)ethyl]-1-propyl-8-[(thiophen-2-yl)methyl]xanthine. By methods well known in the art, 3-[2-(4-nitrophenyl)ethyl]-1-propyl-8-[(thiophen-2-yl)methyl]xanthine is reduced with hydrazine hydrate or hydrogen gas in the presence of a palladium catalyst to yield 3-[2-(4-aminophenyl)ethyl]-1-propyl-8-[(thiophen-2-yl)methyl]xanthine.

Herkunft & Nachweise