Study on antitubercular constituents from the seeds of Nigella glandulifera.

Two new compounds with five known compounds have been isolated from EtOH extract of the seeds of Nigella glandulifera. On the basis of their spectroscopic and chemical evidence, the new compounds were elucidated as methoxynigeglanine (1) and 6-methoxythymol-3-O-β-D-glucopyranoside (4). Compounds 1-4 showed moderate antitubercular activity against Mycobacterium tuberculosis strain H37Rv with minimal inhibitory concentration (MIC) values of 32-250 µg/mL.