title: Studies on a new nucleoside antibiotic, dapiramicin. II. Isolation, physico-chemical and biological characterization.
abstract: New nucleoside antibiotics, dapiramicins A and B produced by a Micromonospora sp. SF-1917, have been isolated by column chromatography on Diaion HP-20 and silica gel. Physico-chemical properties suggested that they are disaccharide nucleosides. Dapiramicin A underwent epimerization, under acidic condition, into epidapiramicin A. Although dapiramicin A generally exhibits no in vitro activity, it is very effective against the sheath blight of rice plants caused by Rhizoctonia solani in a green house test.
mesh_terms: D000617:Aminoglycosides; D000818:Animals; D000900:Anti-Bacterial Agents / Q000302:isolation & purification* / Q000633:toxicity; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D005658:Fungi / Q000187:drug effects; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D051379:Mice; D008847:Micromonospora / Q000032:analysis; D009705:Nucleosides / Q000302:isolation & purification / Q000633:toxicity; D010944:Plants / Q000187:drug effects; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000617:Aminoglycosides; D000900:Anti-Bacterial Agents; D009705:Nucleosides; C040545:dapiramicin B