Terreulactones A, B, C, and D:: Novel acetylcholinesterase inhibitors produced by Aspergillus terreus -: II.: Physico-chemical properties and structure determination

Terreulactones A, B, C, and D, new meroterpenoid compounds with potent antiacetylcholinesterase activity, were determined to be mixed polyketides-terpenoid. structures by spectroscopic studies.