Stereumone A, a novel sesquiterpene was isolated from the fermentation broth of Stereum sp. 8954. Its structure was determined to be 5-hydroxy-6,6,9-trimethyl-4
Promoted by active indium produced in situ by Sm/InCl3·4H2O system,arylidenecyano-acetates undergo reductive cyclodimerization to afford cyclopentamine der