Delaminomycins, novel nonpeptide extracellular matrix receptor antagonist and a new class of potent immunomodulator. II. Physico-chemical properties and structure elucidation of delaminomycin A.

Delaminomycins, novel extracellular matrix receptor antagonists, have been isolated from a culture broth of Streptomyces albulus MJ202-72F3. The structure of delaminomycin A was determined to be 3-[[2-[(3E,5E)-2,8-dihydroxy-7-methyl-3,5-decadienyl]- 1,6,8- trimethyl-1,2,4a,5,6,7,8,8a-octahydro-1-naphthyl]carbonyl]-5- hydroxypyrrolidine-2,4-dione by analyses of spectral properties and chemical studies.