Reactivity of Thioaldehyde: Cyclization Reaction of 6-Amino-1,3-dimethyl-5- thioformyluracil with Enamines into Pyrido[2,3-d]pyrimidine-2,4-(1H,3H)-diones

J Org Chem. 1997 May 2;62(9):2999-3001. doi: 10.1021/jo962200s.
No abstract available