Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1992-01-10
1993-05-11
Ford, John M.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
548237, C07D26310
Patent
active
052102068
ABSTRACT:
The present invention relates to a process for the preparation of a compound of the formula: ##STR1## wherein R.sub.1 is selected from the group consisting of hydrogen, loweralkyl, loweralkoxy-substituted loweralkyl, lower alkenyl, lower alkynyl, cycloalkyl and cycloalkylalkyl; R.sub.2 is selected from the group consisting of hydrogen, loweralkyl, loweralkoxy-substituted loweralkyl, halogen and loweralkoxy; R.sub.3 is selected from hydrogen, loweralkyl, and halogen; R* and R** are independently selected from loweralkyl and P.sub.1 is hydrogen or an nitrogen-protecting group; or an acid addition salt thereof.
REFERENCES:
Drugs of the Future 16 305-309 (1991).
De Biswanath
Kerkman Daniel J.
Morton Howard E.
Abbott Laboratories
Crowley Steven R.
Ford John M.
Gupta Y. N.
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