Jütten P, Schumann W, Härtl A, Heinisch L, Gräfe U, Werner W, Ulbricht H. A novel type of nonsteroidal estrone sulfatase inhibitors.
Bioorg Med Chem Lett 2002;
12:1339-42. [PMID:
11992772 DOI:
10.1016/s0960-894x(02)00171-3]
[Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Madurahydroxylactone (MHL) is a secondary metabolite produced by the soil bacterium Nonomuria rubra and belongs to the family of benzo[a]naphthacenequinones. We report the initial results and structure-activity relationships of our study into a series of thiosemicarbazone derivatives of madurahydroxylactone as potential nonsteroidal inhibitors of the enzyme estrone sulfatase. The most active compound, the cyclohexylthiosemicarbazone, was shown to be a non-competitive inhibitor with a K(i) of 0.35microM. This compound is devoid of estrogenic properties and showed low acute toxicity in the hen's fertile egg screening test.
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