A compound of formula (I):
wherein R = H or Na, or a salt thereof and an enzyme, obtainable from Streptomyces species, having clavulanic acid dehydrogenase activity which is capable of converting (I) into clavulanic acid .
化合物的公式(I):其中R = H或Na,或其盐,以及一种可以从链霉菌属中获得的酶,具有能够将(I)转化为
克拉维酸的脱氢酶活性。