Unambiguous Assignment of the13C NMR Resonances of the Side-Chain Carbon Atoms of Dipropylglyoxal Bis(Amidinohydrazone) by DEPT and Selective Heteronuclear Proton Decoupling Techniques
作者:
Hannu Elo,
Kari Soljamo,
期刊:
Spectroscopy Letters
(Taylor Available online 1989)
卷期:
Volume 22,
issue 9
页码: 1141-1149
ISSN:0038-7010
年代: 1989
DOI:10.1080/00387018908054011
出版商: Taylor & Francis Group
关键词: Dipropylglyoxal Bis(guanylhydrazone);Dimethyl Sulfoxide-d6;Chemical Shifts
数据来源: Taylor
摘要:
The previously unassigned carbon-13 NMR resonances of the side-chain carbon atoms of the enzyme inhibitor dipropylglyoxal bis(amidinohydrazone) (DPGBG) have been unambiguously assigned with the aid of DEPT measurements and experiments involving the selective decoupling of the protons of one of the methylene groups. The chemical shifts of the side-chain carbon atoms of DPGBG decrease in a nearly linear fashion as a function of the position of the atom in the side chain, the terminal methyl groups having the lowest shift value. The carbon-13 shifts are positively correlated with the chemical shifts of the corresponding hydrogen atoms.
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