Process
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United States of America Patent
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Aug 9, 1994
Grant Date -
N/A
app pub date -
Oct 14, 1992
filing date -
Apr 17, 1990
priority date (Note) -
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status (Latency Note)
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Abstract
There is disclosed a process for the preparation of a compound of structure (I) ##STR1## in which n is 1 to 3 and each group R is hydrogen or C.sub.1-4 alkyl, which comprises, reaction of compound of structure (II) ##STR2## (prepared by esterifying the hydroxyl compound) in which R.sup.1 is C.sub.1-4 alkyl, phenyl or substituted phenyl and n is 1 to 3, with an amine HNR.sub.2 in which R is as described for structure (I), and optionally thereafter forming a salt. Intermediates are also disclosed.
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