Chemical constituents of hybrids of Ligularia cyathiceps and L. lamarum/L. subspicata collected in China: Structures of subspicatins M, N, O1, and O2, and related compounds

Structures of six previously undescribed eremophilanes from natural hybrids between L. cyathiceps and L. lamarum/L. subspicata complex and the first isolation of benzofurans from L. subspicata are described.120