Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1997-02-04
1999-07-20
Chang, Ceila
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
546240, C07D21122, C07D21134
Patent
active
059257610
ABSTRACT:
Processes for preparing compounds having the general formula: ##STR1## wherein R.sup.1a is protected carboxy, carboxy, hydroxymethyl, protected hydroxymethyl, or methyl are disclosed. Processes of the invention begin with a starting material of the general formula II ##STR2## and elaborate the product by reductive amination of an aldehyde of formula IVa ##STR3## with .alpha.,.alpha.-diphenyl-4-piperidinemethanol.
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Fang Qun Kevin
Senanayake Chris Hugh
Wilkinson Scott Harold
Chang Ceila
Sepracor Inc.
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