No abstract

No abstract

No abstract

No abstract

Three hydantoins, namely, hydantoin, 5,5-dimethylhydantoin and 5-carboxymethylidine hydantoin are released on acid-hydrolysis of HCN oligomers. These hydantoins correspond to the major amino acids released on acid-hydrolysis of HCN oligomers. Carbamyl groups present in the HCN oligomers are probably the principal precursors of these hydantoins. 5-Carboxymethylidine hydantoin is formed by the acid-catalyzed eyclization of the dicarbamyl derivative of diaminosuccinic acid. The facile rearrangement of 5-carboxymethylidine hydantoin to orotic acid in base suggests the possibility of a direct route to pyrimidines from HCN.

No abstract

No abstract

No abstract