开发了一种一锅法制备2 H - azirine-2-羰基苯并三唑,该方法是通过苯并三唑与2 H -azirine-2-羰基氯的反应形成的,该反应是由Fe(II)催化的苯甲酰异构化生成的。 5-氯异恶唑。2 H-叠氮基-2-羰基苯并三唑与1,3-二酮的Co(II)催化反应以中等到良好的产率提供了2-(((苯并三唑-1-基)羰基)吡咯。碱促进的2-(((苯并三唑-1-基)羰基)吡咯与醛,酮,异氰酸酯和异硫氰酸酯的碱环合反应提供各种取代的吡咯并[1,2- c ]恶唑和1 H-吡咯并[1,2- c]咪唑衍生物,中等至高收率。这些加合物的6-酰基可被三氟甲磺酸除去,得到进一步的新的吡咯并稠合的O-和N-杂环,如6-未取代的吡咯并[1,2 - c ]恶唑-1(3 H)-和1 H-吡咯并[1,2- c ]咪唑-1,3(2 H)-二酮,而1 H-吡咯并[1,2- c ]咪唑-1,3(2 H当用POCl 3
The present invention provides substituted imidazopyridines as described herein or a pharmaceutically acceptable salt or solvate thereof. The representative compounds are useful as inhibitors of the HDM2 protein. Also disclosed are pharmaceutical compositions comprising the above compounds and potential methods of treating cancer using the same.
In one aspect, the invention relates to compounds having the formula:
where R
1
-R
6
, a, b, and X are as defined in the specification, or a pharmaceutically acceptable salt thereof. These compounds have neprilysin inhibition activity. In another aspect, the invention relates to pharmaceutical compositions comprising such compounds; methods of using such compounds; and processes and intermediates for preparing such compounds.
申请人:HELMHOLTZ-ZENTRUM FÜR INFEKTIONSFORSCHUNG GMBH
公开号:US20160145304A1
公开(公告)日:2016-05-26
The present invention provides cystobactamides of formula (I) and the use thereof for the treatment or prophylaxis of bacterial infections:
本发明提供了式(I)的囊胞菌素及其用于治疗或预防细菌感染的用途:
Fe(II)/Au(I) Relay Catalyzed Propargylisoxazole to Pyridine Isomerization: Access to 6-Halonicotinates
作者:Alexey V. Galenko、Firuza M. Shakirova、Ekaterina E. Galenko、Mikhail S. Novikov、Alexander F. Khlebnikov
DOI:10.1021/acs.joc.7b00736
日期:2017.5.19
An efficient synthesis of methyl nicotinates/6-halonicotinates by the domino isomerization of 4-propargyl/(3-halopropargyl)-5-methoxyisoxazoles under Fe(II)/Au(I) relay catalysis was developed. It was found that FeNTf2 is an effective catalyst for first step of the domino isomerization, transformation of isoxazole to 2H-azirine, which is compatible with Ph3PAuNTf2, catalyzing the second step.
Suzuki-Miyaura cross-coupling of 3,4-disubstituted 5-bromoisoxazoles: An efficient access to trisubstituted isoxazoles
作者:Masato Tsuda、Taiki Morita、Hiroyuki Nakamura
DOI:10.1016/j.tetlet.2021.153185
日期:2021.7
The Suzuki-Miyaura cross-coupling of 3,4-disubstituted 5-bromoisoxazoles 1 at the C5 position has successfully proceeded in the presence of Pd2(dba)3 and P(t-Bu)3·HBF4 catalysts to give the corresponding trisubstituted isoxazoles 3 in good to high yields while suppressing the formation of ketone 4 as a byproduct. The use of bulky phosphine ligand P(t-Bu)3·HBF4 is essential for the current transformation