摘要：The green fluorescent substance (G compound) isolated from the mycelium of Ere-mothecium ashbyii was presumed to be a ribityl derivative of 6, 7-dimethyllumazine and already reported in the previous paper. In the present work 6, 7, 8-trimethyllumazine was synthesized, and from the complete agreement of ultraviolet spectrum between this product and G compound, the position of the ribityl group in G compound was confirmed to be the nitrogen at 8-position.
