Synthesis and evaluation of sulfonylethyl-containing phosphotriesters of 3′-azido-3′-deoxythymidine as anticancer prodrugs
摘要:
A series of bis(sulfonylethyl) and mono(sulfonylethyl) phenyl phosphotriesters of zidovudine (3'-azido-3'-deoxythymidine, AZT) were synthesized as potential anticancer prodrugs that liberate AZT monophosphate via nonenzymatic beta-elimination mechanism. Stability studies demonstrated that all the synthesized prodrugs spontaneously liberate AZT monophosphate with half-lives in the range of 0.07-278.8 h under model physiological conditions in 0.1 M phosphate buffer at pH 7.4 and 37 degrees C. Analogous to aldophosphamide, the elimination rates were accelerated in the presence of reconstituted human plasma under the same conditions. Among the compounds, 3, 4, 8, and 10 were comparable or superior to AZT against five established human cancerous cell lines in vitro. Moreover, the selected compounds were equally sensitive to both the wild-type osteosarcoma 143B and the thymidine kinase-deficient 143B/TK cell lines. The findings are consistent with that these compounds deliver AZT monophosphate intracellularly. (C) 2014 Elsevier Ltd. All rights reserved.
Synthesis and evaluation of sulfonylethyl-containing phosphotriesters of 3′-azido-3′-deoxythymidine as anticancer prodrugs
摘要:
A series of bis(sulfonylethyl) and mono(sulfonylethyl) phenyl phosphotriesters of zidovudine (3'-azido-3'-deoxythymidine, AZT) were synthesized as potential anticancer prodrugs that liberate AZT monophosphate via nonenzymatic beta-elimination mechanism. Stability studies demonstrated that all the synthesized prodrugs spontaneously liberate AZT monophosphate with half-lives in the range of 0.07-278.8 h under model physiological conditions in 0.1 M phosphate buffer at pH 7.4 and 37 degrees C. Analogous to aldophosphamide, the elimination rates were accelerated in the presence of reconstituted human plasma under the same conditions. Among the compounds, 3, 4, 8, and 10 were comparable or superior to AZT against five established human cancerous cell lines in vitro. Moreover, the selected compounds were equally sensitive to both the wild-type osteosarcoma 143B and the thymidine kinase-deficient 143B/TK cell lines. The findings are consistent with that these compounds deliver AZT monophosphate intracellularly. (C) 2014 Elsevier Ltd. All rights reserved.
General method for the synthesis of high enantiomeric purity chiral epoxides
作者:William H. Pirkle、Peter L. Rinaldi
DOI:10.1021/jo00414a001
日期:1978.9
Eastgate, Martin D.; Fox, David J.; Morley, Thomas J., Synthesis, 2002, # 14, p. 2124 - 2128
作者:Eastgate, Martin D.、Fox, David J.、Morley, Thomas J.、Warren, Stuart
DOI:——
日期:——
Titanium Containing Complex and Condensation Reaction Catalysts, Methods for Preparing the Catalysts, and Compositions Containing the Catalysts
申请人:Brandstadt Kurt
公开号:US20140213690A1
公开(公告)日:2014-07-31
A composition is capable of curing via condensation reaction. The composition uses a new condensation reaction catalyst. The new condensation reaction catalyst is used to replace conventional tin catalysts. The composition can react to form a gum, gel, rubber, or resin.
US9371422B2
申请人:——
公开号:US9371422B2
公开(公告)日:2016-06-21
Synthesis and evaluation of sulfonylethyl-containing phosphotriesters of 3′-azido-3′-deoxythymidine as anticancer prodrugs
A series of bis(sulfonylethyl) and mono(sulfonylethyl) phenyl phosphotriesters of zidovudine (3'-azido-3'-deoxythymidine, AZT) were synthesized as potential anticancer prodrugs that liberate AZT monophosphate via nonenzymatic beta-elimination mechanism. Stability studies demonstrated that all the synthesized prodrugs spontaneously liberate AZT monophosphate with half-lives in the range of 0.07-278.8 h under model physiological conditions in 0.1 M phosphate buffer at pH 7.4 and 37 degrees C. Analogous to aldophosphamide, the elimination rates were accelerated in the presence of reconstituted human plasma under the same conditions. Among the compounds, 3, 4, 8, and 10 were comparable or superior to AZT against five established human cancerous cell lines in vitro. Moreover, the selected compounds were equally sensitive to both the wild-type osteosarcoma 143B and the thymidine kinase-deficient 143B/TK cell lines. The findings are consistent with that these compounds deliver AZT monophosphate intracellularly. (C) 2014 Elsevier Ltd. All rights reserved.