Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1989-12-27
1991-06-18
Chan, Nicky
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
549432, 549445, 549434, 549220, C07D31770
Patent
active
050247433
ABSTRACT:
The present invention provides compounds of the general formula: ##STR1## where R.sub.1 is a hydrogen atom or a methoxy or ethoxy radical and R.sub.2 and R.sub.3 are hydrogen atoms or R.sub.2 and R.sub.3 together represent an aromatic carbon-carbon bond and R.sub.1 is a hydrogen atom, a hydroxyl group or an ethoxy radical; and the pharmaceutically acceptable salts thereof.
Gorler Klaus
Hanack Michael
Krumbiegel Gunter
Subramanian Lakshmina R.
Chan Nicky
Madaus GmbH & Co.
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