Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Covex SA
Original Assignee
Covex SA
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Filing date
Publication date
Application filed by Covex SAfiledCriticalCovex SA
Priority to ES530096ApriorityCriticalpatent/ES8604951A1/en
Publication of ES8604951A1publicationCriticalpatent/ES8604951A1/en
Publication of ES530096A0publicationCriticalpatent/ES530096A0/en
The O-sulphobenzoate imide of (+)14,15-dehydro (3alpha,16 alpha) eburnamenine 14-carboxylic acid ethyl ester, of formula (I) and its acceptable salts are made by reaction of the ethyl ester or its salt, e.g. phosphate, with an aq. soln. of O-sulphobenzoic acid imide, or its Na or K salt. Reaction is at 20 deg.C up to b.pt.
ES530096A1984-02-271984-02-27Prepn. of imide of ethyl ester eburnamenine carboxylic acid
ExpiredES8604951A1
(en)