Synthesis Of Purine Derivatives

Purine Derivatives: In the present work several new 8-substituted caffeine derivatives were synthesized aiming aat obtain – ing cmound of expected biological activity . The thesis consist of the following parts :A.Inthis part areview on the methods of prearation and pharmacological activity of purines is given .B.Aim of the present investigationThis includes the pharmalogica basis on which the synthnesized compounds were chosen.