Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Software-assisted methodology for complete assignment of H-1 and C-13 NMR data of poorly functionalized molecules: The case of the chemical marker diterpene ent-copalic acid

Full text
Author(s):
Ferreira, Alexsandro Euripedes [1] ; Ferreira Soares Rocha, Ana Carolina [1] ; Bastos, Jairo Kenupp [2] ; Gomes Heleno, Vladimir Constantino [1]
Total Authors: 4
Affiliation:
[1] Univ Franca, Grp Pesquisa Prod Nat, BR-14404600 Franca, SP - Brazil
[2] Univ Sao Paulo, Fac Ciencias Farmaceut Ribeirao Preto, BR-14040903 Ribeirao Preto, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of Molecular Structure; v. 1228, MAR 15 2021.
Web of Science Citations: 2
Abstract

This work describes a methodology for the complete assignment of H-1 and C-13 NMR data of poorly functionalized molecules through spectral simulations conducted with computer programs available for free. We have been able to achieve the complete assignment, including the clarification of multiplicities and the determination of all the hydrogen homonuclear coupling constants, which is not common for poorly functionalized compounds. We have performed H-1 NMR, C-13[H-1] NMR, DEPT-135, gCOSY, gHSQC, gHMBC, NOESY, and J resolved experiments and obtained the required dataset for the complete and unequivocal assignment of the spectra of ent-copalic acid. (C) 2020 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 11/13630-7 - Chemical and pharmacological validation of extracts and active compounds of Copaifera species
Grantee:Jairo Kenupp Bastos
Support Opportunities: Research Projects - Thematic Grants