Synthesis of six and five membered heterocyclic compounds including oxygen and nitrogen

Synthesis of new six and five membered heterocyclic compounds including oxygen and nitrogen was reported and following compounds were synthesized: 1.Synthesis of novel tetrahydrobenzo[4,5]imidazo[2,1-b]chromeno[4,3,2-de]quinazoline 3 and benzothiazole-2-ylamino-xanthenone derivatives 5; 2. Synthesis of different pyrano-pyrazole derivatives 4 and 5; 3. Synthesis of benzo[4,5]imidazo[1,2-a]chromeno[4,3-d]pyrimidine-6-one 6, triazolo[1,5-a]pyrimidin-5-one 7 and pyrido[2,3-d]pyrimidine-2,4,7-trione derivatives 8; 4. Synthesis of benzochromeno-pyrazole derivatives 5 and 6; 5. Synthesis of spiroacenaphthylene derivatives 4.