Biogenetic pathway, bioassay, and NMR copies from A biomimetic semisynthesis enables structural elucidation of selaginellin U: a tautomeric cyclic alkynylphenol from <i>Selaginella tamariscina</i>

Plausible biogenetic pathway of compounds 1 and 2, BACE1 bioassay, and NMR copies of all isolated compounds