Mapping the Binding Motifs of Deprotonated Monounsaturated Fatty Acids and Their Corresponding Methyl Esters within Supramolecular Capsules
作者:Kaiya Wang、Bruce C. Gibb
DOI:10.1021/acs.joc.7b00264
日期:2017.4.21
monounsaturated fatty carboxylates and their corresponding methyl esters. All of the carboxylates bound to the capsule in a J-shaped motif with the carboxylate at the equatorial region of the dimeric capsule, and the reverse turn of the chain and the methyl terminal in each polar region of the host. Guestexchange was slow on the NMR time scale, while tumbling was slow or close to the NMR time scale depending on
Biosynthesis-Assisted Structural Elucidation of the Bartolosides, Chlorinated Aromatic Glycolipids from Cyanobacteria
作者:Pedro N. Leão、Hitomi Nakamura、Margarida Costa、Alban R. Pereira、Rosário Martins、Vitor Vasconcelos、William H. Gerwick、Emily P. Balskus
DOI:10.1002/anie.201503186
日期:2015.9.14
The isolation of the bartolosides, unprecedented cyanobacterial glycolipids featuring aliphatic chains with chlorine substituents and C‐glycosyl moieties, is reported. Their chlorinated dialkylresorcinol (DAR) core presented a major structural‐elucidation challenge. To overcome this, we discovered the bartoloside (brt) biosynthetic gene cluster and linked it to the natural products through in vitro
Ralstonins A and B, Lipopeptides with Chlamydospore-Inducing and Phytotoxic Activities from the Plant Pathogen <i>Ralstonia solanacearum</i>
作者:Yuta Murai、Shoko Mori、Hiroyuki Konno、Yasufumi Hikichi、Kenji Kai
DOI:10.1021/acs.orglett.7b01685
日期:2017.8.18
synthase-nonribosomal peptide synthetase gene cluster. We herein isolate its products (named ralstonins A and B) from R. solanacearum and elucidate their structures and biological activities. Ralstonins are unusual lipodepsipeptides composed of 11 aminoacids (containing unique aminoacids such as β-hydroxytyrosine and dehydroalanine) and a 3-amino-2-hydroxyoctadecanoic acid, and their production is controlled by quorum