Hej,
I am having some problems with getting the structure from NMR spectrums.
The spectrums are at:
http://www.flickr.com/photos/53718988@N05/ From the NMR I was able to get:
- a benzene ring, ortho disubstituted
-an aldehyde group -CHO
-the spectrum is registered in D2O, so it should be any signal for -OH,-NH or -SH
-the signals at 60.577ppm in the C-NMR, are for two methoxy groups -0-CH3
I am confused about the peaks at 5.2ppm, 4.6ppm and the group of peaks at 3.40-3.80ppm in the H-NMR
I am not sure how to interpret the HMQC and HMBC spectrum? Do you have any ideas?