Journal of Spectroscopy

Journal of Spectroscopy / 2000 / Article

Open Access

Volume 14 |Article ID 784518 | https://doi.org/10.1155/2000/784518

Myriam Meléndez-Rodríguez, Willy Rendón, Galia Chávez, Gerardo Martínez-Guajardo, Pedro Joseph-Nathan, "1H and 13C NMR assignments of dihydropipataline, the main of four long-chain 1-(3,4-methylenedioxyphenyl)-alkanes from Piper darienence D.C.", Journal of Spectroscopy, vol. 14, Article ID 784518, 7 pages, 2000. https://doi.org/10.1155/2000/784518

1H and 13C NMR assignments of dihydropipataline, the main of four long-chain 1-(3,4-methylenedioxyphenyl)-alkanes from Piper darienence D.C.

Abstract

Four 1-(3,4-methylenedioxyphenyl)-alkanes having linear ten, eleven, twelve and fourteen carbon atom chains, found in the roots of Piper darienence D.C., were separated by HPLC and their structures determined by mass spectrometry and NMR spectroscopy. Conventional 1D NMR methods were used for 1H chemical shifts assignment of the main compound dihydropipataline (3) [1-(3,4-methylenedioxyphenyl)‒dodecane]. The 13C NMR assignment was carried out using conventional considerations and 2D NMR techniques (HETCOR and FLOCK) in combination with spectral 13C NMR simulation and ab initio DFT-GIAO NMR calculations.

Copyright © 2000 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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