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US 5,684,158 AGranted
3-amino!-tetrahydrocarbazole-propanoic acid esters
AssigneeBayer Aktiengesellschaft
InventorsSamir Samaan, Joachim Lanz, Paul Naab, Ulrich Rosentreter
Life of this patent
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Abstract
The invention relates to new 3-amino!-tetrahydrocarbazole-propanoic acid esters which can be used as intermediates for the preparation of known thromboxane-antagonistic active compounds, and to a method for the purification of these active compounds.
Claims12
3-Amino!-tetrahydrocarbazole-propanoic acid esters of the general formula (I) ##STR7## in which R represents straight-chain or branched alkyl having up to 10 carbon atoms, and their salts.
Dependencies are inferred from the claim text.