Diastereomeric ester compound useful as an intermediate in the making of an optically active 3,4-dihydro-3,4-epoxy-2H-1-benzopyran compound
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United States of America Patent
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Jan 5, 1993
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N/A
app pub date -
May 13, 1991
filing date -
May 11, 1990
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Expired
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Abstract
The present invention provides a new diastereomer ester compound which is useful as an intermediate in the making of an optically active 3,4-dihydro-3,4-epoxy-2H-1-benzopyran compound.
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