abstract |
This invention provides a novel compound of the formula: wherein X is L-H y Pro or L-Pro, R is -CH3 or -CH(CH3)2, and n is an integer from 9 to 12, or its salt, a process for producing the compound which comprises cultivating a microorganism which belongs to the genus Pseudomonas and produces the compound in a medium and recovering the compound from the medium and a biologically pure culture of Pseudomonas sp. PB-6250 producing the compound. |