Anti-cancer activity of heteroaromatic acetals of andrographolide and its isomers
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Acetals (2a-d, 3a-d, and 6a-d) of andrographolide (1), 14-deoxy-12-hydroxyandrographolide (4), and isoandrographolide (5) were synthesized using benzaldehyde and heteroaromatic aldehydes. All the synthesized derivatives were characterized using 1H-NMR, 13C-NMR... ...
