Approach to the Library of Fused Pyridine-4-carboxylic Acids by Combes-Type Reaction of Acyl Pyruvates and Electron-Rich Amino Heterocycles
摘要:
A library of fused pyridine-4-carboxylic acids (including pyrazolo[3,4-b]pyridines, isoxazolo[5,4-b]pyridines, furo[2,3-b]pyridines, thieno[2,3-b]pyridines, and pyrido[2,3-d]pyrimidines) was generated by Combes-type reaction of acyl pyruvates and electron-rich amino heterocycles followed by hydrolysis of the ester. The library members were also demonstrated to undergo the standard combinatorial transformations including amide coupling and esterification, as well as less common heterocyclizations to 1,2,4-triazoles and 1,2,4-oxadiazoles.
Design and Synthesis of Fungal-Selective Resorcylate Aminopyrazole Hsp90 Inhibitors
作者:David S. Huang、Emmanuelle V. LeBlanc、Tanvi Shekhar-Guturja、Nicole Robbins、Damian J. Krysan、Juan Pizarro、Luke Whitesell、Leah E. Cowen、Lauren E. Brown
DOI:10.1021/acs.jmedchem.9b00826
日期:2020.3.12
pathogen’s human host, preventing the use of known clinical Hsp90 inhibitors in antifungal applications due to concomitant host toxicity issues. With the goal of developing Hsp90 inhibitors with acceptable therapeutic indices for the treatment of invasive fungal infections, we initiated a program to design and synthesize potent inhibitors with selective activity against fungal Hsp90 isoforms over their
Amino derivatives of pyrazolopyridine carboxamides
申请人:E. R. Squibb & Sons, Inc.
公开号:US03966746A1
公开(公告)日:1976-06-29
4-Amino derivatives of pyrazolo[3,4-b]pyridine-5-carboxamides having the formula ##SPC1## Are disclosed. The novel compounds are useful as ataractic, analgesic, and hypotensive agents.
Compounds of the formula I, in which R
1
, R
2
, X and Y have the meanings indicated in Claim
1
, are inhibitors of TBK1 and IKKε and can be employed, inter alia, for the treatment of cancer and inflammatory diseases.
Benzimidazolyl-pyrazolo[3,4-<i>b</i>]pyridinones, Selective Inhibitors of MOLT-4 Leukemia Cell Growth and Sea Urchin Embryo Spiculogenesis: Target Quest
作者:Boris V. Lichitsky、Andrey N. Komogortsev、Arkady A. Dudinov、Mikhail M. Krayushkin、Evgenii N. Khodot、Alexander V. Samet、Eugenia A. Silyanova、Leonid D. Konyushkin、Alexei S. Karpov、Delphine Gorses、Thomas Radimerski、Marina N. Semenova、Alex S. Kiselyov、Victor V. Semenov
DOI:10.1021/acscombsci.9b00135
日期:2019.12.9
phenotypic seaurchinembryo assay and the in vitro cytotoxicity screen against human cancer cell lines. In the seaurchinembryo model, 1-benzimidazolyl-pyrazolo[3,4-b]pyridinones 11 caused inhibition of hatching and spiculogenesis at sub-micromolar concentrations. These compounds also selectively and potently inhibited growth of the MOLT-4 leukemia cell line. Subsequent structure-activity relationship
Compounds of formulae I and Ia,
1
wherein
X
1
is secondary phosphino; R
3
is hydrogen, a hydrocarbon radical having from 1 to 20 carbon atoms, a heterohydrocarbon radical, bonded via a carbon atom, having from 2 to 20 atoms and at least one hetero atom selected from the group O, S and NR, or ferrocenyl; R is H or C
1
-C
4
alkyl; each R
4
individually or both R
4
together are a hydrocarbon radical having from 1 to 20 carbon atoms; and R
01
and R
02
are each independently of the other a hydrogen atom or a hydrocarbon radical having from 1 to 20 carbon atoms, are chiral ligands for metal complexes with metals of sub-groups I and VIII, which are catalysts for asymmetric addition reactions, for example of hydrogen, to prochiral unsaturated organic compounds.