Über Pterinchemie. 74. Mitteilung. Zum Verlauf der katalytischen Reduktion von 6-Methylpterin

On the Pathway of the Catalytic Reduction of 6-Methylpterin The catalytic hydrogenation of 6-methylpterin (I) in neutral or weekly acidic solution begins, as for the 7-methylpterin, by the thermodynamically controlled reduction of the 7,8-double bond. It is not possible to say, according to our experiments, which double bound, either the 5,6 or the 7,8, is first reduced in strongly acidic solution. However, a 5,8-reduction can be excluded.