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Abstract
Convenient synthetic procedures for 1,2,3,6,7, 11b-hexahydro-4H-pyrimido[6, 1-a] isoquinolin-4-thiones and 2,3,6,7,12,12b-hexahydro-1H-pyrimido[1',6':1,2]pyrido[3,4-b]indole-4-thiones have been developed. Structural factors which influence on a cascade cyclization process have been elucidated. [PUBLICATION ABSTRACT]





