Advances in heterocyclic chemistry Advances in Heterocyclic Chemistry Advances in heterocyclic chemistry. 1 Advances in heterocyclic chemistry. 2 Advances in heterocyclic chemistry. 22 Advances in heterocyclic chemistry. 29 Advances in heterocyclic chemistry. 30 Advances in heterocyclic chemistry. 31 Advances in heterocyclic chemistry. 32 Advances in heterocyclic chemistry. 33