C-2 hydroxyl protected-n-acyl (2R,3S)-3-phenylisoserine substituted phenyl activated esters and method for production thereof
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United States of America Patent
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Oct 24, 2000
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N/A
app pub date -
Jun 21, 1999
filing date -
Jun 21, 1999
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Expired
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Abstract
A chemical compound having the formula: ##STR1## wherein P.sub.1 is a hydroxyl protecting group, R.sub.1 may be H or electron withdrawing group, R.sub.2 may be H or electron withdrawing group, R.sub.3 may be H or electron withdrawing group, R.sub.4 may be H or electron withdrawing group, R.sub.5 may be H or electron withdrawing group, R.sub.6 may be an alkyl group, an olefinic group, an aromatic group, Ph, PhCH.sub.2, an O-alkyl group, an O-olefinic group, an O-aromatic group, O--Ph, or O--CH.sub.2 Ph.
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