Leucomycin A5是leucomycin复合物的主要代谢产物，leucomycin复合物是一类紧密相关的大环内酯抗生素家族，由北链霉菌生产并于1953年被发现。LeucomycinA5是该复合物中最有效的抗生素之一。亮霉素复合物（kitasamycin）用作动物保健产品，用于控制革兰氏阳性菌，革兰氏阴性球菌，钩端螺旋体和支原体。对于复杂物中单个类似物的活性知之甚少，因为它们的有限可用性限制了研究。 Leucomycin A5 is a major metabolite of the leucomycin complex, a family of closely related macrocyclic lactone antibiotics produced by|Streptomyces kitasatoensis|and discovered in 1953. Leucomycin A5 is one of the more potent antibiotics of the complex. Leucomycin complex (kitasamycin) is used as an animal health product for control of Gram positive bacteria, Gram negative cocci,|leptospira|and|mycoplasma|. Little is known about the activity of individual analogues within the complex as their limited availability has restricted investigation.