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13C NMR-spectroscopy of substituted xanthones—III: Computer supported structure elucidation of polyhydroxy xanthones

✍ Scribed by H. Hambloch; A.W. Frahm

Publisher
Elsevier Science
Year
1980
Tongue
French
Weight
498 KB
Volume
36
Category
Article
ISSN
0040-4020

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## Abstract A procedure for developing ^13^C NMR chemical shift additivity rules for all 136 polymethoxyxanthones and all 136 polyacetoxyxanthones, based on multiple linear regression analysis, is reported. The influence of steric interactions between the substituents on the chemical shifts of the