(2S,5S)-2,5-dibenzyl-1,4-dimethylpiperazine, a novel alkaloid from zanthoxylum arborescens

(2S,5S)-2,5-dibenzyl-1,4-dimethylpiperazine, a novel alkaloid from zanthoxylum arborescens Constituents of Zanthoxylum. 7. Old and new alkaloids from Zanthoxylum arborescens Two New Benzophenanthridine Alkaloids from <i>Zanthoxylum nitidum</i> Two New Benzophenanthridine Alkaloids from Zanthoxylum nitidum Benzophenanthridine alkaloids from the stem bark of a Zanthoxylum species Dihydrobenzo[<i>c</i>]phenanthridine Alkaloids from Stem Bark of <i>Zanthoxylum nitidum</i> Dihydrobenzo[<i>c</i>]phenanthridine Alkaloids from Stem Bark of <i>Zanthoxylum nitidum</i> Benzophenanthridine alkaloids from Zanthoxylum rhoifolium Two Novel Alkaloids from <i>Zanthoxylum nitidum</i> Alcaloïdes de Zanthoxylum decaryi: la decarine, nouvel alcaloide dérivé de la benzophénanthridine