Synthesis and antiviral activity of new 4-(phenylamino)/4-[(methylpyridin-2-yl)amino]-1-phenyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acids derivatives
作者:Alice Maria Rolim Bernardino、Alexandre Reis de Azevedo、Luiz Carlos da Silva Pinheiro、Júlio Cesar Borges、Vinícius Lucio Carvalho、Milene Dias Miranda、Marcelo Damião Ferreira de Meneses、Marcelo Nascimento、Davis Ferreira、Moacyr Alcoforado Rebello、Viveca Antonia Giongo Galvão da Silva、Izabel Christina Palmer Paixão de Frugulhetti
DOI:10.1007/s00044-007-9035-6
日期:2007.12
new ethyl 4-(phenylamino)-1-phenyl-1 H -pyrazolo[3,4- b ]pyridine-5-carboxylates (2a–l) (52–82%) or new ethyl 4-[(methylpyridin-2-yl)amino]-1-phenyl-1 H -pyrazolo[3,4- b ]pyridine-5-carboxylates (4a–c) (50–60%), respectively. Subsequent hydrolysis of the esters afforded the corresponding carboxylic acids (3a–l) (86–93%) and (5a–c) in high yield (80–93%). Inhibitory effects of 4-(phenylamino)/4-[(me
新的4-(苯氨基)-1-苯基-1 H- 吡唑并[3,4- b ]吡啶-4-羧酸 (3a-1) 衍生物和新的4-[(甲基吡啶-2-基)氨基] -1-苯基-1 H- 吡唑并[3,4- b ]吡啶-4-羧酸 (5a–c) 衍生物是通过有效的合成途径获得的。将4-氯-1-苯基-1 H- 吡唑并[3,4- b ]吡啶-5-羧酸乙酯 (1) 与适当的取代苯胺或氨基吡啶合并,得到所需的新乙基4-(苯基氨基)-1-苯基-1 H- 吡唑并[3,4- b ]吡啶-5-羧酸酯 (2a–l) (52–82%)或新的乙基4-[((甲基吡啶-2-基)氨基] -1-苯基-1 H- 吡唑并[3,4- b ]吡啶-5-羧酸酯 (4a– c) 分别为(50-60%)。酯的后续水解以高收率(80-93%)提供了相应的羧酸 (3a-1) (86-93%)和 (5a-c )。4-(苯基氨基)/ 4-[((甲基吡啶-2-基)氨基] -1-苯基-1