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.)
Expired
Application number
GB21447/54A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sandoz AG
Original Assignee
Sandoz AG
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Filing date
Publication date
Application filed by Sandoz AGfiledCriticalSandoz AG
Publication of GB761615ApublicationCriticalpatent/GB761615A/en
Dihydro-norlysergic acid is prepared by reducing with sodium in ethanol containing about 0.5 per cent of water, the indolo-quinoline of the formula <FORM:0761615/IV(b)/1> (see Specification 759,105). The product may be purified by esterifying it with methanol and hydrogen chloride, isolating the ester by chromatography on alumina and reconverting to the free acid. An example is given of the process. Specifications 676,281 and 710,323 also are referred to.
GB21447/54A1953-07-271954-07-22Improvements in or relating to lysergic acid derivatives
ExpiredGB761615A
(en)
A procedure for preparing new derivatives of 6-methyl and 1,6-dimethyl-8- (alpha-hydroxy-alkyl) -ergoline i (Machine-translation by Google Translate, not legally binding)