Erinaceolactones A to C, from the Culture Broth of Hericium erinaceus

Three novel compounds, erinaceolactones A to C (1–3), and a known compound (4) were isolated from the culture broth of Hericium erinaceus. The planar structures of 1–3 were determined by the interpretation of spectroscopic data. The absolute configuration of 3 was determined by X-ray crystallography. Although compound 4 had been synthesized, it was isolated from a natural source for the first time. In the bioassay examining plant-growth...