Heterocyclic analogs of xanthiones: 5,6-fused 3-methyl-1-phenylpyrano[2,3-c]pyrazol-4(1H) thiones-synthesis and NMR ((1)H, (13)C, (15)N) data.

Heterocyclic analogs of xanthiones: 5,6-fused 3-methyl-1-phenylpyrano[2,3-c]pyrazol-4(1H) thiones-synthesis and NMR ((1)H, (13)C, (15)N) data.