Die Charakterisierung kleiner Mengen Pyridin

Goris, A.; Larsonneau, A.

doi:10.1007/bf02423566

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Structural Variations In the Tropane Alkaloids1

Nh21

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1967

1990

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Cited by 2 publications

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“…1 -Methyl-2-pyrrolidinone (28) has been detected in Atropa belladonna (13,14) and is plausibly formed by oxidation of the carbinolamine. 1-Methylpyrrolidine (35) which is a minor alkaloid of Atropa belladonna (15) and tobacco (16) is presumably formed by the reduction of the iminium salt 30. Labeled 4-methylaminobutanal was detected in Datura stramonium plants which had been fed [2-14C]ornithine (9).…”

Section: Structural Variations In the Tropane Alkaloidsmentioning

confidence: 99%

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Recent Developments in the Biosynthesis of the Tropane Alkaloids¹

Leete¹

1990

Planta Med

111

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All the experimental evidence is consistent with the 1-methyl-A 1-pyrrolinium salt (30) being a precursor of the tropane nucleus. The various biosynthetic routes which have been established for its formation are summarized in Fig. 4. Initially it was thought that the double bond in the iminium salt could isomerize between its C-2 and C-5 positions, which would result in the scrambling of any isotopic label (e.g. 14C

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Section: Structural Variations In the Tropane Alkaloidsmentioning

confidence: 99%

“…ornlthine (17) , NHY NH2 -ketoglutaric acid (15) group, during its oxidation to the aldehyde. This result was deduced by using [1R-2Hltputrescine (36, Fig.…”

Section: Nh2mentioning

confidence: 99%