The discovery, isolation, elucidation of structure, and synthesis of antamanide

…, H Ottenheym, J Faesel, JX De Vries… - … Edition in English, 1968 - Wiley Online Library
Antamanide is the name we have given to a constituent of the fungus Amanita phalloides.
This substance counteracts the lethal action of the Amanita toxins phalloidine and α‐…

Simple determination of hydrochlorothiazide in human plasma and urine by high performance liquid chromatography

JX De Vries, A Voss - Biomedical Chromatography, 1993 - Wiley Online Library
The diuretic drug hydrochlorothiazide (HCT) is used mainly for treatment of mild to moderate
hypertension and is usually administered with other drugs. An assay for the determination …

Relationship between hepatic cytochrome P450 3A content and activity and the disposition of midazolam administered orally

C Wandel, RH Böcker, H Böhrer, JX Devries… - Drug Metabolism and …, 1998 - ASPET
It was recently shown by others that the clearance of midazolam/kg body weight after iv
administration correlates with hepatic cytochrome P450 (CYP or P450) 3A content in liver …

Direct column liquid chromatographic enantiomer separation of the coumarin anticoagulants phenprocoumon, warfarin, acenocoumarol and metabolites on an α1 …

JX de Vries, E Schmitz-Kummer - Journal of Chromatography A, 1993 - Elsevier
The enantiomers of the racemic coumarin anticoagulants phenprocoumon (PH) and metabolites
(4′-, 6-, 7- and 8-hydroxy-PH), warfarin (WA) and metabolites (6-, 7-hydroxy-WA and …

Constituents of Justicia pectoralis Jacq. 2. gas chromatography/mass spectrometry of simple coumarins, 3‐phenylpropionic acids and their hydroxy and methoxy …

JX De Vries, B Tauscher… - … & environmental mass …, 1988 - Wiley Online Library
The analysis of extracts from the South American plant Justicia pectoralis Jacq. permitted the
identification, among other compounds, of coumarin, dihydrocoumarin, umbelliferone and 3…

Characterization of heparins by high-performance size exclusion liquid chromatography

J Harenberg, JX de Vries - Journal of Chromatography A, 1983 - Elsevier
A method for the determination of the molecular weight distribution of heparins using heparin
oligosaccharides as calibration standards and high-performance size exclusion liquid …

Inhibition of low molecular weight heparin by protamine chloride in vivo

J Harenberg, A Gnasso, JX De Vries… - Thrombosis research, 1985 - Elsevier
To determine the antagonization of anticoagulant and lipolytic effects of a low molecular weight
(LMW) heparin preparation protamine chloride was given intravenosly after iv injection of …

Mass spectrometry of labelled triterpenoids: thermospray and electron impact ionization analysis

H Heinzen, JX de Vries, P Moyna… - Phytochemical …, 1996 - Wiley Online Library
The mass spectra of unlabelled and specifically labelled triterpenes and derivatives were
recorded using thermospray liquid chromatography (TSP‐LC) and electron impact (EI) …

Comparative effects of famotidine and cimetidine on antipyrine kinetics in healthy volunteers.

C Staiger, B Korodnay, JX Devries… - British journal of …, 1984 - ncbi.nlm.nih.gov
Famotidine (MK-208) is a new H2-receptor antagonist with the amidine structure of the side
chain of thiazole (Takagi et al., 1982). 40 mg of this H2-receptor blocker, given at bedtime, is …

The determination of total and unbound midazolam in human plasma. A comparison of high performance liquid chromatography, gas chromatography and gas …

JX De Vries, J Rudi, I Walter‐Sack… - Biomedical …, 1990 - Wiley Online Library
Midazolam concentrations in patients' plasma was determined after extraction with high
performance liquid chromatography (HPLC), gas chromatography (GC) and gas chromatography…