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  • WS-7338, new endothelin receptor antagonists isolated from Streptomyces sp. No. 7338. I. Taxonomy, fermentation, isolation, physico-chemical properties and biological activities.

WS-7338, new endothelin receptor antagonists isolated from Streptomyces sp. No. 7338. I. Taxonomy, fermentation, isolation, physico-chemical properties and biological activities.

The Journal of antibiotics (1992-01-01)
S Miyata, M Hashimoto, Y Masui, M Ezaki, S Takase, M Nishikawa, S Kiyoto, M Okuhara, M Kohsaka
ABSTRACT

WS-7338 A, B, C and D, novel endothelin receptor antagonists, have been isolated from fermentation broth of Streptomyces sp. No. 7338. These antagonists were purified from the culture mycelium by extraction with acetone, followed by carbon column chromatography and HPLC. Among them, WS-7338 B showed good activity in an endothelin receptor binding assay with an IC50 of 2.7 x 10(-7) M.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Endothelin Receptor Antagonist W 7338A