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Expired
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GB4260464A
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Spofa Vereinigte Pharma Werke
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Spofa Vereinigte Pharma Werke
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Publication of GB1066067ApublicationCriticalpatent/GB1066067A/en
C07D459/00—Heterocyclic compounds containing benz [g] indolo [2, 3-a] quinolizine ring systems, e.g. yohimbine; 16, 18-lactones thereof, e.g. reserpic acid lactone
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Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Esters (some novel) of methyl reserpate having the general formula <FORM:1066067/C2/1> wherein X stands for an atom of oxygen or sulphur, and the symbols R1, R2, R3, identical or different, in arbitrary positions of the benzene ring, signify atoms of hydrogen or halogen, or methoxy groups, are prepared by reacting a carboxylic acid of the general formula <FORM:1066067/C2/2> with a dicyclohexyl carbodiimide and methyl reserpate in the medium of an organic solvent, in the presence of pyridine.
GB4260464A1963-10-191964-10-19A method of preparing esters of methyl reserpate
ExpiredGB1066067A
(en)
Procedure for the obtaining of esters of the tiol acid or tionotiolfosforico (-fosfinico). (Machine-translation by Google Translate, not legally binding)