Abstract
Abstract Several derivatives of the novel pyrimido[4′,5′:2,3][1,4]thiazepino[7,6-b]quinoline ring system have been synthesized through cyclocondensation of 5-amino-6-methylpyrimidine-4-thiols 5a,b and 2-chloroquinoline-3-carbaldehydes 6a–c in the presence of K2 CO3 in DMF.
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