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- W1600557250 abstract "Numerous analogs of the antitumor agents epothilones A and B have been synthesized in search of better pharmacological profiles. Insights into the structure-activity relationships within the epothilone family are still needed and more potent and selective analogs of these compounds are in demand, both as biological tools and as chemotherapeutic agents, especially against drug-resistant tumors.A series of pyridine epothilone B analogs were designed, synthesized and screened. The synthesized compounds exhibited varying degrees of tubulin polymerization and cytotoxicity properties against a number of human cancer cell lines depending on the location of the nitrogen atom and the methyl substituent within the pyridine nucleus.The biological screening results in this study established the importance of the nitrogen atom at the ortho position as well as the beneficial effect of a methyl substituent at the 4- or 5-position of the pyridine ring. Two pyridine epothilone B analogs (i.e. compounds 3 and 4) possessing higher potencies against drug-resistant tumor cells than epothilone B, the most powerful of the naturally occurring epothilones, were identified." @default.
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- W1600557250 date "2000-08-01" @default.
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- W1600557250 title "Chemical synthesis and biological properties of pyridine epothilones**This paper is dedicated to Professor José Barluenga on the occasion of his 60th birthday." @default.
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- W1600557250 doi "https://doi.org/10.1016/s1074-5521(00)00006-5" @default.
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