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Phototransformation products of the alkaloid lappaconitine: Multinuclear NMR study

Paper ID Volume ID Publish Year Pages File Format Full-Text
28023 44056 2008 5 PDF Available
Title
Phototransformation products of the alkaloid lappaconitine: Multinuclear NMR study
Abstract

The NMR technique has been applied to characterize the phototransformation products of the natural alkaloid lappaconitine. It was demonstrated that the photolysis of lappaconitine 1 results in cleavage of the ester bond with elimination of N-acetylanthranilic acid. The final reaction product was found to be an immonium salt 4 of N-acetylanthranilic acid and enamine 3. An equilibrium between the imine cation and the enamine 3 was detected.

Keywords
Lappaconitine; Phototransformation; N-acetylanthranilic acid; NMR
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Phototransformation products of the alkaloid lappaconitine: Multinuclear NMR study
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 197, Issues 2–3, 25 June 2008, Pages 290–294
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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