(6R,7S)-2-amino-6,7-dihydroxy-1,5,5a,6,7,8,9a,10-octahydropyrano[3,2-g]pteridin-4-one 、 (6R,7S)-2-amino-6-hydroxy-7-(hydroxymethyl)-5,5a,6,7,8a,9-hexahydro-1H-furo[3,2-g]pteridin-4-one 、
乙酸酐 生成
(3S,4R,4aR,10aS)-8-acetamido-5-acetyl-3,4,4a,5,6,7,10,10a-octahydro-6-oxo-2H-pyrano<3,2-g>pteridin-3,4-diyl-diacetat