Taylor, Edward C. published the artcilePteridines. XXXVII. A total synthesis of L-erythro-biopterin and some related 6-(polyhydroxyalkyl)pterins, Safety of 2-Aminomalononitrile 4-methylbenzenesulfonate, the publication is Journal of the American Chemical Society (1976), 98(8), 2301-7, database is CAplus and MEDLINE.
6-(1-Erythro-1′,2′-dihydroxypropyl)pterin was prepared by cupric acetate oxidation of 5-deoxy-L-arabinose to its osone, transoximation with acetone oxime to the α-ketoaldoxime, condensation with benzyl α-aminocyanoacetate methanesulfate to give II, cyclization with guanidine to biopterin 8-oxide, and deoxygenation with sodium dithionite. The overall yield was 12%. In analogous fashion, 6-(D-arabino-tetrahydroxybutyl)pterin and 6-D-threo-trihydroxypropyl)pterin were prepared from D-glucose and D-xylose, resp.
Journal of the American Chemical Society published new progress about 5098-14-6. 5098-14-6 belongs to nitriles-buliding-blocks, auxiliary class Nitrile,Salt,Sulfonic acid,Amine,Benzene, name is 2-Aminomalononitrile 4-methylbenzenesulfonate, and the molecular formula is C28H29NO4, Safety of 2-Aminomalononitrile 4-methylbenzenesulfonate.
Referemce:
https://en.wikipedia.org/wiki/Nitrile,
Nitriles – Chemistry LibreTexts