title: Analytical studies of maridomycin. II. Separation of 9-propionylmaridomycins by thin-layer chromatography.
abstract: Priopionyl derivatives of maridomycins, 9-propionylmaridomycins (PMDMs), are sixteen-membered ring macrolide antibiotics of six analogous components: I, II, III, IV, V and VI. The present paper deals with the separation and quantitative analysis of these components. The analysis was performed by thin-layer chromatographic separation, addition reaction of gaseous iodine with PMDMs on the plate, extraction of the PMDM-iodine complexes, and subsequent analysis of the amount of reacted iodine, using an automatic analysis system. To ascertain the reaction product of this system, PMDM III-iodine complex was synthesized separately under a liquid-phase reaction and the ratio of PMDM III and iodine atoms was determined to be 1:3 on physicochemical examination.
mesh_terms: D000900:Anti-Bacterial Agents / Q000302:isolation & purification*; D002855:Chromatography, Thin Layer; D007202:Indicators and Reagents; D007933:Leucomycins / Q000302:isolation & purification*; D013329:Structure-Activity Relationship
chemical_list: D000900:Anti-Bacterial Agents; D007202:Indicators and Reagents; D007933:Leucomycins; C009796:propionylmaridomycin