Erinachromanes A and B and Erinaphenol A from the Culture Broth of Hericium erinaceus

Three novel compounds, erinachromanes A and B (1, 2) and erinaphenol A (3), along with eight known compounds (4-11), were isolated from the culture broth of Hericium erinaceus. The structures of 1-3 were determined by the interpretation of spectroscopic data. Although compounds 4 and 9 had been synthesized, they were isolated from a natural source for the first time. In the bioassay examining plant-growth regulatory activity, all of the compounds suppressed the growth of lettuce.