ISSN:
0030-4921
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
1H-{1H} INDOR studies on the PMR spectra of the acids derived from the pungent principles of piper nigrum nl. piperinic acid (1), isopiperinic acid (2), chavicinic acid (3) and isochavicinic acid (4) were undertaken. The spectral parameters as well as most of the relative signs of the coupling constants were obtained (Tables 1 to 3). The data are consistent with s-trans conformations around C3—C4 for all isomers.
Additional Material:
3 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1270040306