Erinacines A, B and C, strong stimulators of nerve growth factor (NGF)-synthesis, from the mycelia of Hericium erinaceum

The structures of novel diterpenoids, erinacines A, B, and C, isolated from the cultured mycelia of Hericium erinaceum were determined by interpretation of the spectral data, and chemical and enzymatic reactions. These compounds showed potent stimulating activity of nerve growth factor (NGF)-synthesis.