Phosphorus-31 NMR studies of the kinetics of bisalkylation by isophosphoramide mustard: comparisons with phosphoramide mustard
摘要:
31P nuclear magnetic resonance spectroscopy was used to measure the pKa (4.28 +/- 0.2) of isophosphoramide mustard (IPM) at 20 degrees C and to study the kinetics and products of the decomposition of IPM at a solution pH value of ca. 7.4 and at temperatures between 20 and 47 degrees C in the presence of nucleophilic trapping agents. At 37 degrees C, the half-life for the first alkylation was ca. 77 min and ca. 171 min for the second alkylation; these data may be compared with those for phosphoramide mustard (Engle, T.W.; Zon, G.; Egan, W.J. Med. Chem. 1982, 25, 1347), wherein the half-lives for the first and second alkylations are approximately the same (18 min). The rate of fragmentation of aldoifosfamide to IPM and acrolein was also studied by NMR spectroscopy (pH 7.0; 37 degrees C; 0.07 M phosphate); under the noted conditions, the half-life of aldoifosfamide was found to be ca. 60 min.
Effects of N-substitution on the activation mechanisms of 4-hydroxycyclophosphamide analogs
作者:Chul Hoon Kwon、Richard F. Borch
DOI:10.1021/jm00127a016
日期:1989.7
which can reclose to the cis- or trans-4-hydroxy isomers or undergo base-catalyzed beta-elimination to generate the corresponding phosphoramide mustard products 4. In contrast to the general acid catalysis observed for ringopening of 2a and 2d, the N-(chloroethyl)-substituted analogues 2b and 2c undergo specific base-catalyzedringopening. This mechanistic difference was also illustrated by the rapid
Phosphoramidate alkylator prodrugs can be used to treat cancer when administered along or in combination with one or more anti-neoplastic agents.
磷酰胺酰化烷基化剂前药可以在单独或与一个或多个抗肿瘤剂联合使用时用于治疗癌症。
Phosphoramidate Alkylator Prodrugs
申请人:Matteucci Mark
公开号:US20110251159A1
公开(公告)日:2011-10-13
Phosphoramidate alkylator prodrugs can be used to treat cancer when administered alone or in combination with one or more anti-neoplastic agents.
磷酰胺烷基化剂前药可单独或与一个或多个抗肿瘤药物联合使用,用于治疗癌症。
Glufosfamide combination therapy
申请人:Tidmarsh George
公开号:US20110182909A1
公开(公告)日:2011-07-28
Glufosfamide administered in combination with other chemotherapeutic agents is useful in cancer treatment.
METABOLIC PROFILING WITH MAGNETIC RESONANCE MASS SPECTROMETRY (MRMS)
申请人:Oregon Institute of Science and Medicine
公开号:US20190391092A1
公开(公告)日:2019-12-26
A method for constructing a metabolic profile of a mammalian (such as a human) subject from one of more urine samples from the subject uses magnetic resonance mass spectrometry (MRMS) for the rapid and inexpensive quantitative measurement of at least 4,000 urinary chemical substances in a single analysis. The method for metabolic profiling measures thousands of urinary substances in a urine sample from a mammalian subject in a single assay. Many of these substances can be of mammalian metabolic origin. The measurements of types and amounts of urinary substances can be correlated to assessments of present or future health of the subject.