A process for the preparation of formylimidazoles of the general formula: or its tautomers, in which R.sup.1 is hydrogen or alkyl, and R.sup.2 is hydrogen, halogen or alkyl. In a first stage, an imidazole derivative of the general formula: ##STR1## or its tautomers, in which R.sup.1 and R.sup.2 are as defined above, is converted, by introducing an amino protective group, into an imidazole derivative of the general formula: ##STR2## or its tautomers, in which R.sup.3 is an amino protective group. Such derivative is formylated in a second stage in the presence of an organometallic compound and a suitable electrophile to give an imidazole derivative of the general formula: ##STR3## or its tautomers, in which R.sup.1, R.sup.2 and R.sup.3 are as defined above. Then, in a third stage, the end product of the formula I is obtained by cleaving off the amino protective group.
Imidazopyridine derivatives for the treatment of hypertension
申请人:Tanabe Seiyaku Co., Ltd.
公开号:US05409936A1
公开(公告)日:1995-04-25
An imidazopyridine derivative is disclosed of the formula [I]: ##STR1## wherein R.sup.1 is lower alkyl, R.sup.2 is a group of the formula ##STR2## where Z is oxygen atom, R.sup.0 is lower alkyl, R.sup.3 is carboxyl or lower alkoxycarbonyl and Ring A is tetrazolyl-substituted or unsubstituted phenyl, and pharmaceutically acceptable salt thereof, that are useful in prophylaxis and treatment of hypertension.
Imidazopyridine derivatives and process for preparation thereof
申请人:TANABE SEIYAKU CO., LTD.
公开号:EP0531874A1
公开(公告)日:1993-03-17
An imidazopyridine derivative of the formula [I]:
wherein R¹ is hydrogen or lower alkyl, R² is hydrogen, lower alkylsulfonyl or a group of the formula:
(Z is oxygen atom or two hydrogen, R⁰ is substituted or unsubstituted lower alkyl, lower alkoxy, 5- or 6-membered heteromonocyclic, substituted or unsubstituted phenyl, hydrogen, substituted or unsubstitued amino or lower alkenyl), R³ is carboxyl or lower alkoxycarbonyl and Ring A is substituted or unsubstituted phenyl, and pharmaceutically acceptable salt thereof, and processes for preparation thereof, said imidazopyridine derivatives have excellent angiotensin II antagonistic activities and are useful in prophylaxis and treatment of hypertension.
式 [I] 的咪唑吡啶衍生物:
其中 R¹ 是氢或低级烷基,R² 是氢、低级烷基磺酰基或式中的一个基团:
(Z是氧原子或两个氢,R⁰是取代或未取代的低级烷基、低级烷氧基、5-或 6-元杂环基、取代或未取代的苯基、氢、取代或未取代的氨基或低级烯基)、R³ 是羧基或低级烷氧基羰基,环 A 是取代或未取代的苯基,以及其药学上可接受的盐及其制备方法,所述咪唑吡啶衍生物具有优异的血管紧张素 II 拮抗活性,可用于高血压的预防和治疗。
Verfahren zur Herstellung von Formylimidazolen
申请人:LONZA A.G.
公开号:EP0965590A1
公开(公告)日:1999-12-22
Beschrieben wird ein neues Verfahren zur Herstellung von Formylimidazolen der allgemeinen Formel
oder deren Tautomeren, worin R1 Wasserstoff oder Alkyl und R2 Wasserstoff, Halogen oder Alkyl bedeutet, bei dem in einer ersten Stufe ein Imidazolderivat der allgemeinen Formel
oder dessen Tautomere, worin R1 und R2 die genannte Bedeutung haben, durch Einführen einer Aminoschutzgruppe in ein Imidazolderivat der allgemeinen Formel
oder dessen Tautomere, worin R3 eine Aminoschutzgruppe bedeutet, überführt werden, diese in einer zweiten Stufe in Gegenwart einer Organometall-Verbindung und eines geeigneten Elektrophils in ein Imidazolderivat oder allgemeinen Formel
oder dessen Tautomere, worin R1, R2 und R3 die genannte Bedeutung haben, formyliert werden und dann in einer dritten Stufe durch Abspalten der Aminoschutzgruppe das Endprodukt der Formel I erhalten wird.
Imidazole-based pinanamine derivatives: Discovery of dual inhibitors of the wild-type and drug-resistant mutant of the influenza A virus
作者:Jianghong Dong、Shengwei Chen、Runfeng Li、Wei Cui、Haiming Jiang、Yixia Ling、Zifeng Yang、Wenhui Hu
DOI:10.1016/j.ejmech.2015.12.013
日期:2016.1
We previously reported potent hit compound 4 inhibiting the wild-type influenza A virus A/HK/68 (H3N2) and A/M2-S31N mutant viruses A/WS/33 (H1N1), with its latter activity quite weak. To further increase its potency, a structure-activity relationship study of a series of imidazole-linked pinanamine derivatives was conducted by modifying the imidazole ring of this compound. Several compounds of this series inhibited the amantadine-sensitive virus at low micromolar concentrations. Among them, 33 was the most potent compound, which was identified as being active on an amantadine-sensitive virus through blocking of the viral M2 ion channel. Furthermore, 33 markedly inhibited the amantadine-resistant virus (IC50 = 3.4 mu M) and its activity increased by almost 24-fold compared to initial compound, with its action mechanism being not M2 channel mediated. (C) 2015 Elsevier Masson SAS. All rights reserved.