SELECTIVE ESTERIFICATION OF GOSSYPOL BY COPPER-ACETATE IN ACETONITRILE SPECTROSCOPIC STUDIES

Authors
BRZEZINSKI B MARCINIAK B KOZUBEK H PASZYC S
Citation
B. Brzezinski et al., SELECTIVE ESTERIFICATION OF GOSSYPOL BY COPPER-ACETATE IN ACETONITRILE SPECTROSCOPIC STUDIES, Spectroscopy letters, 27(9), 1994, pp. 1143-1151
Citations number
18
Categorie Soggetti
Spectroscopy
Journal title
Spectroscopy letters → ACNP
ISSN journal
00387010
Volume
27
Issue
9
Year of publication
1994
Pages
1143 - 1151
Database
ISI
SICI code
0038-7010(1994)27:9<1143:SEOGBC>2.0.ZU;2-X
Abstract
Gossypol and its 1:1 complexes with copper acetate in acetonitrile wer e studied by FTIR and UV-visible spectroscopy. With the complexation w ith Cu cation the tautomeric equilibrium of gossypol is completely shi fted from the aldehyde-aldehyde to the lactol-lactol tautomer. The aci dic character of O11H group in the gossypol-Cu complex led to the sele ctive esterification of the lactol form of gossypol by the acetate gro up.