Iodine‐Promoted Synthesis of Dipyrazolo/Diuracil‐Fused Pyridines and
<i>o</i>
‐Amino Diheteroaryl ketones via Oxidative Domino Annulation of 2/4‐Methylazaarenes
4-b:4′,3′-e]pyridines (BPPs), diuracilpyridines and o-amino diheteroaryl ketones. The domino procedure proceeded with easily available methyl azaarenes, 5-aminouracils and substituted 5-aminopyrazoles. This protocol is a simple and metal-free approach which exhibits high functional group compatibility and broad substrates scope. Moreover, this transformation can be applied for the preparation of dipyr
碘促进的氧化多米诺环化和羰基化过程已被开发用于合成具有生物学意义的氮杂芳烃取代的双吡唑并[3,4- b :4',3'- e ]吡啶(BPPs)、双尿嘧啶和邻氨基二杂芳基酮。多米诺程序使用易于获得的甲基氮杂芳烃、5-氨基尿嘧啶和取代的 5-氨基吡唑进行。该协议是一种简单且无金属的方法,具有高官能团兼容性和广泛的底物范围。此外,这种转化可用于制备克级联吡唑并/双尿嘧啶稠合的吡啶。
HETEROARYLAMINOPYRAZOLE DERIVATIVES USEFUL FOR THE TREATMENT OF DIABETES
申请人:Rudolph Joachim
公开号:US20090209451A1
公开(公告)日:2009-08-20
The present invention relates to heteroarylaminopyrazole compounds, pharmaceutical compositions, and methods for treating diabetes and related disorders.
cascade 6-endo-dig cyclizationreaction was developed for the switchable synthesis of halogen and non-halogen-functionalized pyrazolo[3,4-b]pyridines from 5-aminopyrazoles and alkynyl aldehydes via C≡C bond activation with silver, iodine, or NBS. In addition to its wide substrate scope, the reaction showed good functional group tolerance as well as excellent regional selectivity. This new protocol