- Disrupting aggregation of tethered rhodamine B dyads through inclusion in cucurbit[7]uril
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(Figure Presented) Hexano- and dodecano-tethered diesters of rhodamine B were prepared. The absorption and fluorescence spectra of these flexibly tethered dyads were compared with those of the rhodamine 3B ethyl ester. Increased J- and H-type dimer format
- Halterman, Ronald L.,Moore, Jason L.,Mannel, Lisa M.
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Read Online
- Ester and amide derivatives of rhodamine B exert cytotoxic effects on different human tumor cell lines
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Three esters of rhodamine B (1–3) differing in their alkyl chain lengths as well as several rhodamine B amides (4–9) were synthesized in good yields and tested for their cytotoxicity in SRB assays employing several human tumor cell lines. The rhodamine B esters were unselective but showed cytotoxicity of as low as EC50 = 0.15 ± 0.02 μM. The rhodamine B amides were slightly less cytotoxic but showed good selectivity against MCF-7 and A2780 tumor cell lines. Especially a morpholinyl derivative 4 was ~20 time more cytotoxic for MCF-7 than for nonmalignant NIH 3T3 cells. [Figure not available: see fulltext.].
- Serbian, Immo,Hoenke, Sophie,Kraft, Oliver,Csuk, René
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p. 1655 - 1661
(2020/07/02)
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- Pyridine the alkone is wrong compound compound
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PURPOSE: A compound used as a dye is provided to enhance high molar extinction coefficient and spectrometric concentrate. CONSTITUTION: A compound is denoted by chemical formula (0). In chemical formula (0), R2 is hydrogen atom, -CN, or -CONH_2; R3 is alkyl group of 1-4 carbon atoms; and R4a-R7a are independently -R^8, OR^8, -COOR^8, -COR^8, -OCOOR^8, -OCOR^8, -CN, -NO^2, halogen atom, -SO_3H, -SO_3Na,-SO_3K, -SO_2NR, 8R9, or -NR^ll R^12. A dye contains the compound as an active ingredient. A coloring resin composition contains the dye, resin, and solvent.
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Page/Page column 52; 53
(2016/10/09)
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- An efficient and versatile approach for the preparation of a rhodamine B ester bioprobe library
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A general approach for the preparation of a library consisting of reactive rhodamine B (RhB) bioprobes based on ester or thioester linkages is described. The synthesis of this library proceeds fast and efficiently in one reaction step. Pure RhB ester chromophores are readily obtained directly from the reaction mixture following a simple and straight forward workup procedure without further HPLC purification required. A variety of functional groups are attached to the RhB scaffold yielding the functional chromophores in moderate to high yields with particular focus on introducing bioorthogonal substituents suitable for protein and peptide labeling. The approach reported herein provides a concise and practical route to access a variety of reactive RhB fluorophores that could be applied for various bioconjugation chemistries.
- Chen, Xi,Wu, Qianzhen,Henschke, Lars,Weber, Günther,Weil, Tanja
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experimental part
p. 296 - 303
(2012/05/04)
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- 1H and 13C NMR spectra of commercial rhodamine ester derivatives
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Ethyl and methyl esters of commercial rhodamines B, 19, 101 and 110 and propyl and butyl esters of commercial rhodamine B were synthesized and isolated with different counterions (yields 70-98%). The 1H and 13C NMR spectral data for these compounds were fully assigned by a combination of one-and two-dimensional experiments. The Fourier transform IR and UV-visible spectra were also recorded and the main bands were identified. Copyright
- Ramos,Vilhena,Santos,Almeida
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p. 475 - 478
(2007/10/03)
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