Design and Optimization of Potent and Orally Bioavailable Tetrahydronaphthalene Raf Inhibitors
摘要:
Inhibition of mutant B-Raf signaling, through either direct inhibition of the enzyme or inhibition of MEK, the direct substrate of Raf, has been demonstrated preclinically to inhibit tumor growth. Very recently, treatment of B-Raf mutant melanoma patients with a selective B-Raf inhibitor has resulted in promising preliminary evidence of antitumor activity. This article describes the design and optimization of tetrahydronaphthalene-derived compounds as potent inhibitors of the Raf pathway in vitro and in vivo. These compounds possess good pharmacokinetic properties in rodents and inhibit B-Raf mutant tumor growth in mouse xenograft models.
Structural and vibrational investigation of 2-amino-4-nitropyridine crystal
摘要:
The X-ray structure of 2-amino-4-nitropyridine was determined at room temperature. The crystal belongs to the P2(1)/c space group of the monoclinic system (Z = 4, a = 6.7290(10), b = 10.946(2), c = 9.060(2) Angstrom, beta = 100.03(3) deg) and is built of layers parallel to the (102) crystallographic plane. The molecules in the layer are joined into centrosymmetric dimers by two N-H ... N hydrogen bonds (N ... N distance = 3.011(3) Angstrom), which form rings of Ci symmetry. The other N-H bonds of the amino groups are involved in N-H ... O hydrogen bonds with the oxygen atoms of the nitro groups (N ... O distance = 3.054(3) Angstrom). These hydrogen bonds join the dimers into an infinite plane. The powder IR and Raman spectra (4000-80 cm(-1)) were measured for normal and deuterated crystals and are discussed with respect to the crystal structure. The N-H stretching vibrations behave as the stretching vibrations of two almost independent hydrogen bonds. Strong A(g)-A(u)-type splitting is observed for the stretching vibrations of the N-H ... N type hydrogen bonds. (C) 1997 Elsevier Science B.V.
This invention provides compounds of formula (I):
wherein R
1a
, R
1b
, R
1c
, R
2a
, R
2b
, R
2c
, and R
2d
have values as described in the specification, useful as inhibitors of HDAC6. The invention also provides pharmaceutical compositions comprising the compounds of the invention and methods of using the compositions in the treatment of proliferative, inflammatory, infectious, neurological or cardiovascular diseases or disorders.
Lewis Acid-Catalyzed Intermolecular Annulation: Three-Component Reaction toward Imidazo[1,2-<i>a</i>]pyridine Thiones
作者:Zhengwang Chen、Pei Liang、Fan Xu、Rulin Qiu、Qi Tan、Lipeng Long、Min Ye
DOI:10.1021/acs.joc.9b01188
日期:2019.7.19
A Lewis acid-catalyzed three-component annulation reaction of 2-aminopyridines and ynals with elemental sulfur was established. A series of imidazo[1,2-a]pyridine thiones was obtained in moderate to excellent yields. The merits of this transformation include easily available starting materials, multiple C-heteroatom bond formation in one pot, good functional group tolerance, elemental sulfur as S source
建立了路易斯酸催化的2-氨基吡啶和ynals与元素硫的三组分环化反应。以中等至优异的产率获得了一系列咪唑并[1,2- a ]吡啶硫酮。这种转化的优点包括:容易获得的起始原料,在一个罐中形成多个C-杂原子键,良好的官能团耐受性,元素硫作为S源,操作简便等。
[EN] SUBSTITUTED PYRIMIDINE COMPOUNDS, COMPOSITIONS AND MEDICINAL APPLICATIONS THEREOF<br/>[FR] COMPOSÉS DE PYRIMIDINE SUBSTITUÉE, COMPOSITIONS ET APPLICATIONS MÉDICINALES CORRESPONDANTES
申请人:JUBILANT BIOSYS LTD
公开号:WO2015025197A1
公开(公告)日:2015-02-26
The present disclosure relates to pyrimidine compounds of formula (I), their stereoisomers, tautomers, pharmaceutically acceptable salts, polymorphs, solvates, and hydrates thereof. The present disclosure also relates to process of preparation of these pyrimidine compounds, and to pharmaceutical compositions containing them. The compounds of the present disclosure are useful in the treatment, prevention or suppression of diseases and disorders mediated by epidermal growth factor receptor (EGFR) family kinases.
[EN] BIFUNCTIONAL COMPOUNDS AND USE FOR REDUCING URIC ACID LEVELS<br/>[FR] COMPOSÉS BIFONCTIONNELS ET LEUR UTILISATION POUR RÉDUIRE LES TAUX D'ACIDE URIQUE
申请人:WARRELL RAYMOND P
公开号:WO2015123003A1
公开(公告)日:2015-08-20
Bifunctional compounds that increase uric acid excretion and reduce uric acid production. Methods of using these compounds for reducing uric acid levels in blood or serum, for treating disorders of uric acid metabolism, and for maintaining normal uric acid levels in blood or serum are provided. Pharmaceutical compositions comprising the bifunctional compounds are also provided.