Synthesis of substituted 3-amino-N-phenyl-1H-indazole-1-carboxamides endowed with antiproliferative activity.

Abstract:

:Several new N-phenyl-1H-indazole-1-carboxamides 1c-h and 4l,m were prepared by reacting phenyl isocyanate derivatives 3a,b with 3-amino-1H-indazole derivatives 2c,e,g or 1H-indazole 2l respectively. Chemical transformations of compounds 1a,b and 1g,h gave 3-acetamido-N-phenyl-1H-indazole-1-carboxamide derivatives 5a,b, and 3,5-diamino-N-phenyl-1H-indazole-1-carboxamide derivatives 4i,j respectively. Finally, 3,5-diacetamido-N-phenyl-1H-indazole-1-carboxamide derivatives 6a,b were prepared by acetylation of 4i,j. Some of synthesized compounds were evaluated for their in vitro antiproliferative activity against the full NCI tumor cell lines panel derived from nine clinically isolated cancer types (leukemia, non-small cell lung, colon, CNS, melanoma, ovarian, renal, prostate and breast). Compound 1c, the most active of the series, was able to inhibit cell growth showing GI(50) values in the 0.041-33.6 μM range, mean GI(50) 1.90 μM, being very effective against colon and melanoma cell lines. Cell cycle analysis in K562 cells showed that 1c causes a marked increase of cells in G0-G1 phase. Moreover, it increases the ratio between hypophosphorylated pRb and total pRb.

journal_name

Eur J Med Chem

authors

Maggio B,Raimondi MV,Raffa D,Plescia F,Cascioferro S,Plescia S,Tolomeo M,Di Cristina A,Pipitone RM,Grimaudo S,Daidone G

doi

10.1016/j.ejmech.2010.10.032

subject

Has Abstract

pub_date

2011-01-01 00:00:00

pages

168-74

issue

1

eissn

0223-5234

issn

1768-3254

pii

S0223-5234(10)00772-5

journal_volume

46

pub_type

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