Enantiomerically Pure Phosphonated Carbocyclic 2'-Oxa-3'-Azanucleosides: Synthesis and Biological Evaluation
作者:Roberto Romeo、Caterina Carnovale、Salvatore Giofrè、Giulia Monciino、Maria Chiacchio、Claudia Sanfilippo、Beatrice Macchi
DOI:10.3390/molecules190914406
日期:——
Starting from enantiomeric pure 1-[(3S,5R)- and 1-[(3R,5S)-3-(hydroxymethyl)-2-methylisoxazolidin-5-yl]-5-methylpyrimidine-2,4(1H,3H)-diones (−)7a and (+)7b, obtained by lipase-catalyzed resolution, pure diethyl[(3S,5R)-2-methyl-5-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)isoxazolidin-3-yl]methyl}phosphonate (−)12a and diethyl[(3R,5S)-2-methyl-5-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)isoxazolidin-3-yl]methyl}phosphonate (+)12b have been synthesized. The obtained compounds showed no cytotoxic activity versus the U937 cell line in comparison with AZT, and were poorly able to inhibit HIV infection in vitro.
从脂肪酶催化分解得到的对映体纯品1-[(3S,5R)-和1-[(3R,5S)-3-(羟甲基)-2-甲基异恶唑烷-5-基]-5-甲基嘧啶-2,4(1H,3H)-二酮(-)7a和(+)7b开始,纯品二乙基[(3S,5R)-2-甲基-5-(5-甲基-2、(3R,5S)-2-甲基-5-(5-甲基-2,4-二氧代-3,4-二氢嘧啶-1(2H)-基)异恶唑烷-3-基]甲基}膦酸二乙酯 (-)12a 和二乙基[(3R,5S)-2-甲基-5-(5-甲基-2,4-二氧代-3,4-二氢嘧啶-1(2H)-基)异恶唑烷-3-基]甲基}膦酸二乙酯 (+)12b 合成。与 AZT 相比,所获得的化合物对 U937 细胞系没有细胞毒性活性,对体外 HIV 感染的抑制能力也很差。