Process for the preparation of clausenamide and neoclausenamide, and derivatives thereof
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 21, 1992
Grant Date -
N/A
app pub date -
Aug 13, 1990
filing date -
Aug 19, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for the preparation of compound of the formula ##STR1## in which R.sup.1 --represents ##STR2## and R.sup.2 --represents hydrogen, fluorine, chlorine or bromine. Comprising cyclizing compounds of the formula ##STR3## and, in a further step, either a) reducing stereo-specifically to give compounds of the formula in which R.sup.1 represents ##STR4## or b), to give compounds of the formula in which R.sup.1 represents ##STR5## or by c) forming compounds of the formula ##STR6## followed by stereoselective reduction to give compounds in which R.sup.1 represents ##STR7##
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully