Benzopyrans and use thereof in treating vascular diseases
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United States of America Patent
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Mar 21, 1989
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N/A
app pub date -
Nov 4, 1987
filing date -
Nov 4, 1986
priority date (Note) -
Expired
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Abstract
Isoflavans of the formula I ##STR1## wherein the groups OR, R', R' and ring B are as defined in the specification, exhibit valuable pharmacological properties, especially for the treatment of vascular diseases. They are prepared by methods known per se.
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