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Semi-automated preparation of a 11C-labelled antibiotic--[N-methyl-11C]erythromycin A lactobionate.
Pike VW, Palmer AJ, Horlock PL, Perun TJ, Freiberg LA, Dunnigan DA, Liss RH. Pike VW, et al. Int J Appl Radiat Isot. 1984 Feb;35(2):103-9. doi: 10.1016/0020-708x(84)90192-3. Int J Appl Radiat Isot. 1984. PMID: 6231252
A fast semi-automated method is described for labeling the antibiotic, erythromycin A (1), with the short-lived positron-emitting radionuclide, 11C (t 1/2 = 20.4 min), in order to permit the non-invasive study of its tissue uptake in vivo. Labelling was achieved by the fast reduc …
A fast semi-automated method is described for labeling the antibiotic, erythromycin A (1), with the short-lived positron-emitting radionucli …
Identification of impurities in erythromycin by liquid chromatography-mass spectrometric detection.
Kumar Chitneni S, Govaerts C, Adams E, Van Schepdael A, Hoogmartens J. Kumar Chitneni S, et al. J Chromatogr A. 2004 Nov 12;1056(1-2):111-20. doi: 10.1016/j.chroma.2004.07.091. J Chromatogr A. 2004. PMID: 15595540
Using these reference spectra as interpretative templates, eight novel related substances in erythromycin samples were identified: N-demethylerythromycin E, erythromycin E N-oxide, anhydroerythromycin C, N-demethylerythromycin B, anhydro-N-demethylerythromycin A …
Using these reference spectra as interpretative templates, eight novel related substances in erythromycin samples were identified: N-demethy …
Separation of erythromycin and related substances by high-performance liquid chromatography on poly(styrene-divinylbenzene) packing materials.
Kibwage IO, Roets E, Hoogmartens J, Vanderhaeghe H. Kibwage IO, et al. J Chromatogr. 1985 Aug 23;330(2):275-86. doi: 10.1016/s0021-9673(01)81984-1. J Chromatogr. 1985. PMID: 4066823
Erythromycins A, B and C, anhydroerythromycin A, erythromycin A enol ether, N-demethylerythromycin A, anhydro N-demethylerythromycin A and N-demethylerythromycin A enol ether were chromatographed. ...
Erythromycins A, B and C, anhydroerythromycin A, erythromycin A enol ether, N-demethylerythromycin A, anhydro N- …
Thin-layer chromatographic study of the metabolites of erythromycins in the Wistar rat.
Kibwage IO, Roets E, Verbruggen A, Hoogmartens J, Vanderhaeghe H. Kibwage IO, et al. J Chromatogr. 1988 Dec 29;434(1):177-86. doi: 10.1016/0378-4347(88)80072-0. J Chromatogr. 1988. PMID: 3243811
The metabolites of erythromycin A, anhydroerythromycin A, N-demethylerythromycin A and erythromycin B in the Wistar rat were studied by thin-layer chromatography. ...Erythromycin A gives three principal metabolites, anhydroerythromycin A, anhydro-N- …
The metabolites of erythromycin A, anhydroerythromycin A, N-demethylerythromycin A and erythromycin B in the Wistar rat …
Determination of erythromycin ethylsuccinate by liquid chromatography.
Cachet T, Lannoo P, Paesen J, Janssen G, Hoogmartens J. Cachet T, et al. J Chromatogr. 1992 May 27;600(1):99-108. doi: 10.1016/0021-9673(92)85443-w. J Chromatogr. 1992. PMID: 1400845
The main impurities were erythromycin A and the ethylsuccinate esters of erythromycin B and C. The amide N-ethylsuccinyl-N-demethylerythromycin A was shown to be present in all the samples examined. ...
The main impurities were erythromycin A and the ethylsuccinate esters of erythromycin B and C. The amide N-ethylsuccinyl-N-demethy …
Determination of erythromycin and related substances by capillary electrophoresis.
Lalloo AK, Kanfer I. Lalloo AK, et al. J Chromatogr B Biomed Sci Appl. 1997 Dec 19;704(1-2):343-50. doi: 10.1016/s0378-4347(97)00458-1. J Chromatogr B Biomed Sci Appl. 1997. PMID: 9518168
The methods described are accurate and precise and thus suitable for the quantitative determination of erythromycin and the related substances, erythromycin C, anhydroerythromycin and N-demethylerythromycin A....
The methods described are accurate and precise and thus suitable for the quantitative determination of erythromycin and the related substanc …
Identification of novel erythromycin derivatives in mother liquor concentrates of Streptomyces erythraeus.
Kibwage IO, Janssen G, Busson R, Hoogmartens J, Vanderhaeghe H, Verbist L. Kibwage IO, et al. J Antibiot (Tokyo). 1987 Jan;40(1):1-6. doi: 10.7164/antibiotics.40.1. J Antibiot (Tokyo). 1987. PMID: 3558111 Free article.
The identification of five novel compounds, pseudo-erythromycin A-6,9-hemiketal, 8,9-anhydro-pseudo-erythromycin A-6,9-hemiketal, 8,9-anhydro-pseudo-N-demethylerythromycin A-6,9-hemiketal, 5-O-beta-D-desosaminylerythronolide A and 15-nor-erythromycin C, in mo …
The identification of five novel compounds, pseudo-erythromycin A-6,9-hemiketal, 8,9-anhydro-pseudo-erythromycin A-6,9-hemiketal, 8,9-anhydr …
Optimization of the separation of erythromycin and related substances by high-performance liquid chromatography.
Cachet T, Kibwage IO, Roets E, Hoogmartens J, Vanderhaeghe H. Cachet T, et al. J Chromatogr. 1987 Nov 13;409:91-100. doi: 10.1016/s0021-9673(01)86786-8. J Chromatogr. 1987. PMID: 3693497
UV detection at 215 nm allows quantitation of erythromycins A, B and C, N-demethylerythromycin A, erythromycin A enol ether and anhydroerythromycin A. ...
UV detection at 215 nm allows quantitation of erythromycins A, B and C, N-demethylerythromycin A, erythromycin A enol e …
Chemical modification of erythromycins. IX. Selective methylation at the C-6 hydroxyl group of erythromycin A oxime derivatives and preparation of clarithromycin.
Watanabe Y, Morimoto S, Adachi T, Kashimura M, Asaka T. Watanabe Y, et al. J Antibiot (Tokyo). 1993 Apr;46(4):647-60. doi: 10.7164/antibiotics.46.647. J Antibiot (Tokyo). 1993. PMID: 8501007 Free article.
Among the 9-oxime derivatives, 2'-O,3'-N-bis(benzyloxycarbonyl)-N-demethylerythromycin A 9-[O-(2-chlorobenzyl)oxime] was the most important intermediate for the synthesis of clarithromycin (6-O-methylerythromycin A)....
Among the 9-oxime derivatives, 2'-O,3'-N-bis(benzyloxycarbonyl)-N-demethylerythromycin A 9-[O-(2-chlorobenzyl)oxime] wa …