The 1H and 13C NMR resonances of 19 tetracyclic acridinone derivatives were completely and unambiguously assigned by a combination of 1H-detected one-bond HMQC and long-range (two and three bonds) HMBC correlation experiments. 1H and 13C chemical shifts are also reported for the respective N -aryl b
1H and 13C chemical shifts for tetracycle-fused acridine analogues of amsacrine
✍ Scribed by M. Robin; J. P. Galy; R. Faure
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 98 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.824
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✦ Synopsis
Abstract
The ^1^H and ^13^C NMR resonances for 18 tetracyclic acridines 9‐substituted on the acridine ring with Cl, NH~2~ and AMS [N‐(4‐amino‐3‐methoxyphenyl)1methanesulfonamide] groups were completely and unequivocally assigned by the concerted application of gs‐HMQC and gs‐HMBC experiments. For NH~2~ and AMS substituents, the potential amino–imino tautomerism is completely shifted towards the imino tautomer. Copyright © 2001 John Wiley & Sons, Ltd.
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The 1 H and 13 C NMR chemical shifts of 16 4,5disubstituted acridine derivatives and nine 4-substituted-5,5 0 (˛0 0 ,ω 00diaminoacyl)bisacridine derivatives are reported. Chemical shift assignments were established from 1D and gradient-enhanced 2D measurements.
## Reference Data and chemical shifts of some tetracyclic and 1H 13C pentacyclic acridinone derivatives
The 1 H and 13 C NMR resonances of 15 N,N -diacylproflavines were assigned completely and unequivocally using a concerted application of one-and two-dimensional experiments (DEPT, gs-COSY, gs-HMQC and gs-HMBC).
## Abstract The ^1^H and ^13^C NMR resonances for 16 acridin‐9(10__H__)‐ones substituted with amino or (1,3‐benzothiazol‐2‐yl)amino groups were completely and unequivocally assigned by the concerted application of gs‐COSY, gs‐HMQC and gs‐HMBC experiments. Evidence for hydrogen bond and amino–imino
H and 13C chemical shifts are reported for the condensation products of l-amino-2-phenylazonaphthalene-4-sulphonic acid with benzaldehyde and trans-cinnamaldehyde, two model compounds for sweetening agents. Assignments, based on several two-dimensional techniques, confirm the naphthimidazole skeleto