Masahiko IsakaSomporn PalasarnPranee RachtaweeSaovaluk VimuttipongPalangpon KongsaereeThailand National Center for Genetic Engineering and BiotechnologyMahidol University2018-06-212018-06-212005-05-26Organic Letters. Vol.7, No.11 (2005), 2257-2260152370602-s2.0-20444482427https://repository.li.mahidol.ac.th/handle/123456789/16344(Chemical Equation Presented) Vertihemiptellides A (1) and B (2), unique diketopiperazine dimers, were isolated from the insect pathogenic fungus Verticillium hemipterigenum BCC 1449. Structures of these compounds were elucidated by NMR and mass spectral analysis, and the stereochemistry of 1 was determined by X-ray crystallography. The absolute stereochemistry of bisdethiodi(methylthio)-1-demethylhyalodendrin (3), previously isolated from the same fungus, was revised to the (3R,6R) configuration. © 2005 American Chemical Society.Mahidol UniversityBiochemistry, Genetics and Molecular BiologyArticleSCOPUS10.1021/ol0507266