首页> 外文期刊>European Journal of Medicinal Chemistry: Chimie Therapeutique >1,3-Dipolar cycloaddition of C-aryl-N-phenylnitrones to (R)-1-(1-phenylethyl)-3-((E)-arylmethylidene)tetrahydro-4(1H)-pyridinones: synthesis and antimycobacterial evaluation of enantiomerically pure spiroisoxazolidines.
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1,3-Dipolar cycloaddition of C-aryl-N-phenylnitrones to (R)-1-(1-phenylethyl)-3-((E)-arylmethylidene)tetrahydro-4(1H)-pyridinones: synthesis and antimycobacterial evaluation of enantiomerically pure spiroisoxazolidines.

机译:1,3-偶极环加成C-芳基 - N-苯基硝基至(R)-1-(1-苯基乙基)-3 - ((E) - 甲基甲基)四氢-4(1H) - 吡啶酮:合成和抗微生物评估 对纯纯螺氧唑唑嗪。

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摘要

A series of novel enantiomerically pure spiroisoxazolidines were synthesized regioselectively by the 1,3-dipolar cycloaddition of C-aryl-N-phenylnitrones to (R)-1-(1-phenylethyl)-3-[(E)-arylmethylidene]-tetrahydro-4(1H)-pyridinones. These compounds have been screened for their in vitro activity against Mycobacterium tuberculosis H37Rv (MTB) using agar dilution method. Among the twenty two compounds screened, (3S,4S,5R)-3,4-di(4-methylphenyl)-2-phenyl-7-[(R)-1-phenylethyl]-1-oxa-2,7-diazas piro[4.5]decan-10-one (3e) was found to possess the maximum activity with MIC of 3.02 microM, being 2.5 times more potent than the first-line anti-TB drug ethambutol. For comparison, a series of ten enantiomerically pure spirooxazolines were also screened, among which (4R,5S)-3,4-bis(4-chlorophenyl)-7-[(R)-1-phenylethyl]-1-oxa-2,7-diazaspiro[4.5]de c-2-en-10-one and (4R,5S)-4-(2-chlorophenyl)-3-(4-chlorophenyl)-7-[(R)-1-phenylethyl]-1-oxa-2,7-dia zaspiro[4.5]dec-2-en-10-one were found to display maximum activity with MIC of 3.25 microM.
机译:通过C-芳基 - N-苯基核的1,3-偶极环加成至(R)-1-(1-苯基乙基)-3 - [(e) - 甲基甲基] -tethydro,将一系列新的对纯螺旋虫唑唑唑烷烃合成区域区域选择性。 -4(1H) - 吡啶酮。使用琼脂稀释法对这些化合物筛选其对分枝杆菌H37RV(MTB)的体外活性。在筛选二十二种化合物中,(3S,4S,5R)-3,4-二(4-甲基苯基)-2-苯基-7 - [(R)-1-苯基乙基] -1- OXA-2,7-发现Diazas Piro [4.5]癸丹-10-一(3E)具有3.02微米的MIC的最大活性,比第一线抗TB药物乙胺醇更高2.5倍。为了比较,还筛选了一系列十种对映体纯螺氧唑啉,其中(4R,5S)-3,4-双(4-氯苯基)-7 - [(R)-1-苯基乙基] -1-Oxa-2 ,7 - diazaspiro [4.5] de c-2-en-10-one和(4r,5s)-4-(2-氯苯基)-3-(4-氯苯基)-7- [(r)-1-苯基乙基] -1-oxa-2,7-dia zaspiro [4.5] Dec-2-Zh-10-one,可以显示3.25微米的MIC的最大活性。

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