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http://hdl.handle.net/11375/26342
Title: | Role of Betaine in Transmethylation Reactions in the Barley Plant Origin of the Methylenedioxy Groups of the Alkaloid Protopine |
Authors: | Sribney, Michael |
Advisor: | Kirkwood, S. |
Department: | Chemistry |
Keywords: | betaine;transmethylation reactions;barley plant;alkaloid protopine |
Publication Date: | Oct-1953 |
Abstract: | The role of the labile methyl groups of betaine in the transmethylation reactions in the barley plants was investigated using carbon-14 methyl labelled betaine. The N-methyl groups of N-methyl tyramine, hordenine and choline were found to arise from betaine. Betaine was also administered to castor bean seedlings and the alkaloid ricinine isolated. It was found that its N- and 0-mthyl groups did not arise from betaine methyl. The origin of the methylenedioxy and N-methyl groups of the alkaloid protopine was also investigated by the tracer technique. Carbon-14 methyl labelled L-methionine, carbon-14 labelled choline and carbon-14 labelled sodium formate were fed to Dicentra species and the extent and position of labelling of the protopine molecule determined by degradation |
URI: | http://hdl.handle.net/11375/26342 |
Appears in Collections: | Digitized Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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Role of Betaine in Transmethylation Reactions in the Barley Plant - Origin of the Methylenedioxy Groups if the Alkaloid Protopine.pdf | 2.76 MB | Adobe PDF | View/Open |
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