Compounds with bridgehead nitrogen. 40—Stereochemistry of perhydronaphthaleno[3,4-e]pyrido[1,2c]-[1,3]oxazines

Seven of the possible diastereoisomeric perhydronaphthaleno3,4-e]pyrido1,2-c]1,3]oxazines have been synthesized and the configurations and preferred conformations of these assigned on the basis of IR and ¹H NMR spectroscopy and the application of conformational principles.