A series of novel, macrocyclic polyether compounds. The macrocycles have a 21-membered ring, containing six oxygen atoms, and they have a carboxy group (or a salt thereof) directed towards the interior of the ring. Administration of the compounds of the invention to ruminant animals (e.g. cattle and sheep) modifies their digestive fermentation processes such that the volatile fatty acids produced in the rumen contain a higher proportion of propionates rather than acetates, thereby increasing the efficiency of feed utilization in said ruminant animals. Additionally, the compounds of the invention show antibacterial activity in vitro against certain gram-positive microorganisms.
一系列新型的大环聚醚化合物。这些大环分子具有一个21元环,包含六个氧原子,并且它们具有一个羧基(或其盐)朝向环的内部。将该发明的化合物注入反刍动物(例如牛和绵羊)的体内,可以改变它们的消化发酵过程,使在瘤胃内产生的挥发性
脂肪酸含有更高比例的
丙酸盐而不是
乙酸盐,从而提高了反刍动物的饲料利用效率。此外,该发明的化合物在体外对某些革兰氏阳性微
生物具有抗菌活性。