Starting from dehydroabietic acid, which was purified from disproportionated rosin, three novel heterocycle compounds, methyl 12,13-oxofurazan-deisopropyldehydroabietate, methyl 12,13-furazan-deisopropyldehydroabietate and methyl 12-bromo-13,14-oxofurazan-deisopropyldehydroabietate were synthesized through several steps, such as methylation, bromination, nitration and cyclization. All three compounds were characterized by IR, ¹H NMR, ¹³C NMR spectra and elemental analyses.

Key words: methyl 12,13-oxofurazan-deisopropyldehydroabietate, methyl 12,13- furazan-deisopropyldehydroabietate, methyl 12-bromo-13,14-oxofurazan-deisopropyldehydroabietate, dehydroabietic acid