Synthesis and antiproliferative evaluation of N,N-disubstituted-N′-[1-aryl-1H-pyrazol-5-yl]-methnimidamides
作者:Kaung-Min Cheng、Yu-Ying Huang、Jiann-Jyh Huang、Kimiyoshi Kaneko、Masayuki Kimura、Hiroyuki Takayama、Shin-Hun Juang、Fung Fuh Wong
DOI:10.1016/j.bmcl.2010.08.133
日期:2010.11
A series of N,N-disubstituted-N'-[1-aryl-1H-pyrazol-5-yl]-methnimidamides was synthesized by a newly developed microwave reaction and their antiproliferative activities were evaluated. Microwave irradiation of 5-amino-1,3-disubstituted pyrazoles with various amide solvents in the presence of POCl(3) provided the corresponding 2a-2k, 3a-3c, and 4a-4f in good to excellent yields. The obtained methnimidamides were tested against NCI-H661, NPC-TW01, and Jurkat cancer cell lines and the results indicated that compounds 2d and 2e were the most potent with IC(50) values in low micromolar range. (C) 2010 Elsevier Ltd. All rights reserved.
Selective synthesis of pyrazolo[3,4-d]pyrimidine, N-(1H-pyrazol-5-yl)formamide, or N-(1H-pyrazol-5-yl)formamidine derivatives from N-1-substituted-5-aminopyrazoles with new Vilsmeier-type reagents
作者:Chun-Hsi Chang、Henry J. Tsai、Yu-Ying Huang、Hui-Yi Lin、Li-Ya Wang、Tian-Shung Wu、Fung Fuh Wong
DOI:10.1016/j.tet.2012.11.002
日期:2013.1
N-1-(2-pyridinyl)-5-aminopyrazoles, and N-1-(2-quinolinyl)-5-aminopyrazoles with these agents gave the corresponding pyrazolo[3,4-d]pyrimidine, N-(1H-pyrazol-5-yl)formamide, or N-(1H-pyrazol-5-yl)formamidine. The reaction was different from the traditional Vilsmeier-type reaction and the plausible reactive pathways were proposed for the unexpected result.
从甲酰胺或N-甲基甲酰胺与POCl 3合成了多种新型的Vilsmeier试剂卤代甲基亚铵盐。的治疗Ñ -1-取代的氨基吡唑包括Ñ -1-苯基-5-氨基吡唑,Ñ -1-(2-吡啶基)-5-氨基吡唑,和Ñ -1-(2-喹啉基)-5-氨基吡唑与这些剂得到相应的吡唑并[3,4- d ]嘧啶,N-(1 H-吡唑-5-基)甲酰胺或N-(1 H-吡唑-5-基)甲idine。该反应不同于传统的Vilsmeier型反应,并提出了可能的反应途径以取得意想不到的结果。