Three pairs of undescribed diarylpentanoid enantiomers (1-3) and five undescribed phenylpropanoids (4-8), along with seven known compounds, were isolated from the roots of Anthriscus sylvestris. The structures of compounds (1-8) were determined by analysis of their 1D and 2D NMR spectra, HRESIMS, and electronic circular dichroism. In addition, the inhibitory activities against hypoxia-stimulated pulmonary arterial smooth muscle cells abnormal proliferation were evaluated by MTT assay. The mRNA expression levels of Bcl-2, BAX, Caspase3, and IL-6 were detected by quantitative real-time PCR. The results showed that compounds (-)-1, (+)-1, (-)-2, (+)-3, 4, 8-10, 14, and 15 inhibited the abnormal proliferation of PASMCs by regulating the levels of apoptosis and inflammatory factors.
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