Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/70304
Type: Artigo de periódico
Title: PRINCIPAL COMPONENT ANALYSIS OF THE C-13 NMR SHIFTS OF NORBORNYL DERIVATIVES .2. TETRACYCLIC DODECANE DERIVATIVES
Author: TOSTES, JGR
SEIDL, PR
LEAL, KZ
BRUNS, RE
Abstract: Principal component analysis is applied to the C-13 NMR chemical shifts of 29 tetracyclic dodecane derivatives, the spectra of most of which have been recently assigned. These derivatives are subdivided into three classes: exo-endo, exo-exo and endo-endo. Only the seven C-13 shifts of one of the two norbornyl moieties of these derivatives are used in the construction of the data matrix, the other moiety being considered as a ring substituent. This data treatment allows these 29 systems to become a test system for a previously worked (through principal component analysis) standard or training set of C-13 shifts of 55 substituted norbornanes. Only one two-dimensional principal component projection is necessary for identifying the main structural effects in the chosen norbornyl moiety of the test system, highlighting trends in the C-13 data of these test derivatives and confirming their recent C-13 spectral assignments.
Subject: PRINCIPAL COMPONENT ANALYSIS
TETRACYCLIC DODECANE DERIVATIVES
C-13 NMR CHEMICAL SHIFTS
Country: Inglaterra
Editor: John Wiley & Sons Ltd
Rights: fechado
Identifier DOI: 10.1002/mrc.1260310307
Date Issue: 1993
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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