Seven new N-substituted 3,4-dimethylpyrroles were obtained in situ through the reaction of an amine ((L)-phenylalanine, (L)-tryptophan, (L)-leucine, (L)-methionine, 1-phenethylamine, aniline or dodecylamine) and a mixture of unstable sulfur-containing compounds derived from the reaction of amino acids in Allium cepa and plant enzyme alliinase. In addition, a plausible reaction mechanism for the synthesis of N-substituted 3,4-dimethylpyrroles was displayed.

中文翻译：

---

外源胺与洋葱提取物一起孵育时检测新的 3,4-二甲基吡咯衍生物（

通过胺(( L )-苯丙氨酸、( L )-色氨酸、( L )-亮氨酸、( L )-蛋氨酸、1-苯乙胺、苯胺)的反应原位获得了7个新的N-取代的3,4-二甲基吡咯或十二胺）和不稳定的含硫化合物的混合物，这些化合物来源于洋葱中的氨基酸和植物酶蒜氨酸酶的反应。此外，还展示了合成N-取代的 3,4-二甲基吡咯的合理反应机制。