| 摘要 |
<p>Novel physiologically active substances having an antitumor activity, a process for producing the same and medicinal use thereof are provided. Namely, 12-membered ring macrolide compounds represented by the following general formula which are obtained by culture media of Streptomyces sp. Mer-11107 or its variants, pharmacologically acceptable salts thereof or hydrates of the same and a process for producing the same.</p> |
