| 摘要 |
Derivatives of rosaramicin of the general formula <IMAGE> in which the meaning of the individual symbols is contained in Claim 1, are prepared by reducing an appropriately substituted compound of the general formula <IMAGE> or non-poisonous, pharmaceutically harmless acid addition salts of these compounds, by means of treating them with a reducing agent in the presence of acid, whereby the ester groups contained in the starting material are solvolysed, and isolating the compounds thus obtained in free form or as acid addition salts, or converting them into their esters. The novel compounds possess anti-bacterial activity. |
