The presentinvention provides a novel bioactive substance having an antitumor activity and a process for producing it, and a medical use thereof. Namely, it provides a 12-membered ring macrolide compound represented by the following formula obtained from the incubation solution of Streptomyces sp. Mer. 11107 or a variant thereof, a pharmacologically acceptable salt thereof or a hydrate of them, and a process for producing it.
本发明提供了一种具有抗肿瘤活性的新型
生物活性物质及其生产工艺和医疗用途。也就是说,本发明提供了一种由链霉菌 Mer.11107 或其变体、其药理学上可接受的盐或其
水合物所代表的 12 元环大环内酯化合物及其生产工艺。