FK409, a novel vasodilator isolated from the acid-treated fermentation broth of streptomyces griseosporeus. II. Structure of FK409 and its precursor FR-900411.

FK409, a novel vasodilator isolated from the acid-treated fermentation broth of streptomyces griseosporeus. II. Structure of FK409 and its precursor FR-900411. FK409, a novel vasodilator isolated from the acid-treated fermentation broth of streptomyces griseosporeus. II. Structure of FK409 and its precursor FR-900411. Structure and synthesis of FK409, a novel vasodilator isolated from streptomyces as a semi-artificial fermentation product. Decomposition of FK 409, a new vasodilator: Identification of nitric oxide as a metabolite FK-506 related compounds produced by Streptomyces tsukubaensis No.9993. A new immunomodulator, FR-900494: Taxonomy, fermentation, isolation, and physico-chemical and biological characteristics. FR901459, a novel immunosuppressant isolated from Stachybotrys chartarum No. 19392. Taxonomy of the producing organism, fermentation, isolation, physico-chemical properties and biological activities. A new antitumor antibiotic, FR900840. II. Structural elucidation of FR900840. Structure of FR900452, a novel platelet-activating factor inhibitor from a Streptomyces New Antitumor Substances, FR901463, FR901464 and FR901465. I. Taxonomy, Fermentation, Isolation, Physico-chemical Properties and Biological Activities.