N-containing compounds from seeds of Paganum harmala / 中国中药杂志

ABSTRACT

To investigate the N-containing compounds in the seeds of Paganum harmala,fourteen compounds were finally isolated from the 95% Et OH extract of P. harmala seeds by using various chromatographic techniques including silica gel,MCI resin,and ODS column chromatography as well as the semi-preparative HPLC. Depending on spectroscopic techniques and comparison with the reported data in the literatures,the structures of all compounds were identified as N-[3-(2-amino-4-methoxyphenyl)-3-oxopropyl]acetamide(1),dehydroharmalacidine(2),harmalacidine(3),harmine N-oxide(4),harmine(5),tetrahydroharmine(6),demethylharmalacidine(7),harmol(8),tetrahydroharmol(9),harmindol β-D-glucopyranoside(10),tryptophyl β-D-glucopyranoside(11),pegamineβ-D-glucopyranoside(12),vasicol(13) and vasicinone(14). Among them,1 was a new compound,and 2 and 10 were obtained as natural products for the first time.