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[Question from NMRWiki Q&A forum] Downfield carbon paired with a upfield proton

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05-20-2011, 09:17 PM

nmrlearner

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Downfield carbon paired with a upfield proton

Downfield carbon paired with a upfield proton

Dear sirsI have a natural product whose two carbon resoances are appearinga t 46 and 56 ppm but theirs proton resoanances are appearinga at 0.80 and 0.83 ppm respectively. I am unable to understand how there could be a downfield carbon (oxygenated carbon) is paird up with a upfield proton. I request your expert answer.Thanks in advance.

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