Isolation and Total Synthesis of Icumazoles and Noricumazoles—Antifungal Antibiotics and Cation‐Channel Blockers from Sorangium cellulosum

Joint efforts: The antifungal icumazole A, the potassium-ion-channel inhibitor noricumazole A, and their glycosylated derivatives are new, structurally related secondary metabolites isolated from Sorangium cellulosum. Their structures have been fully assigned by a joint strategy that relied on spectroscopy, derivatization, fragmentation, and finally the first total synthesis of noricumazole A. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.