| abstract |
A compound of formula (I) is obtainable by the cultivation of a microorganism from the genus Streptomyces, such as Streptomyces NCIMB 40515. in the presence of rapamycin, and recovery thereof from the culture medium. The compound, and pharmaceutical compositions containing it, is useful as an immunomodulatory agent, as an anticancer agent, or in the treatment of microbial infections in animals including humans. |