A novel fatty acid monoglyceride from the stem and leaves of Ligusticum chuanxiong Hort.

Two fatty acid monoglycerides were isolated from the petroleum ether fraction of the stem and leaves of Ligusticum chuanxiong by using MCI column, silica gel column, Sephadex LH-20 column and semi-preparative HPLC. Their structures were elucidated by 1D-NMR, 2D-NMR, HR-ESI-MS and optical rotation data. One of them is a new compound, named 14,15-dehydrocrepenynic acid monoglyceride (1), the other was a known compound (R)-α-(7'Z,10'Z,13'Z)-hexadecatrienoic acid monoglyceride (2), both of which were isolated from Ligusticum chuanxiong for the first time. The results of in vitro antitumor activity assay showed that compounds 1 and 2 could inhibit the proliferation of MCF-7 with IC₅₀ values of 30.75 and 36.82 μmol·L^-1, respectively.