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WF-10129, a novel angiotensin converting enzyme inhibitor produced by a fungus, Doratomyces putredinis.

WF-10129 is an angiotensin converting enzyme (ACE) inhibitor produced by Doratomyces putredinis. IC50 of the compound is 1.4 X 10(-8) M for the ACE activity. WF-10129 was purified from cultured filtrate by successive ion exchange chromatography and HPLC. The chemical structure 1 was elucidated on the basis of spectroscopic and chemical evidence. The compound is a dipeptide composed of L-tyrosine and a novel amino acid. WF-10129 inhibits the pressor response of angiotensin I when administered intravenously at 0.3 mg/kg in rats.