Acetylation of 2′, 3′, 5′-tri-O-benzoyl-5-azacytidine (3) gave N4-acetyl derivative 4 which was hydrolyzed to the formylamidinourea 5. The same compound was obtained by ribosylation of the silylated triazine 6 and subsequent hydrolysis of the product. The acetyl derivative 9 was prepared via silylated 5-azacytidine 10. Acid catalyzed acetylation of 5- azacytidine 1 afforded the triacetate 11. Reaction of 1 or its 2′-deoxy derivative 2 with N, ...
![4-amino-1-[4-(hydroxymethyl)-7,7-dimethyl-3,6,8-trioxabicyclo[3.3.0]oct-2-yl]-1,3,5-triazin-2-one Structure](https://image.chemsrc.com/caspic/217/65370-90-3.png)