SYNTHESIS OF TWO NEW HETEROCYCLIC RING SYSTEMS: 2-AZA-6-THIA-10-AZASPIRO[4,5]DECANE-1,3,9-TRIONE-7-ENE-7-BENZOYL AND 2-AZA-7-THIA-11-AZASPIRO[5,5]UNDECANE-1,3,10-TRIONE-8-ENE-8-BENZOYL DERIVATIVES