The synthesis of the novel tricyclic ring 5‐rnethyl‐4‐oxo‐2,3,4,5‐tetrahydrothiopyrano[3,2‐c]‐[1,2]benzothiazine 6,6‐dioxide (III) is described. By the reaction of hydrazine and hydroxylamine with the glyoxylate (IV) and ester (V) obtained from III, several polyazadithiasteriod analogues have been synthesized.
No takes yet. Share an insight, caveat, or question.
Fravolini et al. (1979) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: