Localization of ectopic cyclic Cushing's syndrome, which causes life-threatening complications, is challenging. A 70-year-old woman showed cyclic hypokalemia and hyperglycemia and was diagnosed with cyclic ectopic Cushing's syndrome. Although somatostatin-receptor scintigraphy failed to localize the responsible tumor, fluorodeoxyglucose-positron emission tomography (FDG-PET) showed the uptake of tracer in a lung tumor. Lobectomy resulted in remission. The resected adrenocorticotropic hormone (ACTH)-producing neuroendocrine tumor had Ki-67<2% and negative staining for somatostatin receptors. This is the first case assessed both radiological findings and pathological findings in cyclic ectopic Cushing's syndrome. Subsequent FDG-PET is recommended if somatostatin-receptor scintigraphy is negative.

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Aus der Uracilcarbonsäure (II) werden auf dem im Formelschema angegebenen Weg die dem Sparsomycin (I) verwandten Verbindungen (V) hergestellt und die antibakterielle Wirkung vergleichend untersucht.

Nach literaturbekannten Verfahren werden die im Titel genannten Verbindungen (III)‐(V) dargestellt.