Synthesis and Inotropic Activity of 1-(O-Aminoalkyloximes) of Perhydroindene Derivatives as Simplified Digitalis-like Compounds Acting on the Na+,K+-ATPase
摘要:
A series of 5-substituted (3aS,7aR)-7a-methylperhydroinden-3a-ol derivatives bearing a 1(S)(omega-aminoalkoxy)iminoalkyl or -alkenyl substituent was synthesized, starting from the Hajos-Parrish ketol 47, as simplified analogues of very potent 17beta-aminoalkyloximes with digitalis skeleton, previously reported. The target compounds were evaluated in vitro for displacement of the specific [H-3]ouabain binding from the dog kidney Na+,K+-ATPase receptor. Some of them revealed IC50 values in the micromolar range. The most active compounds possess a cyclohexyl group in the 5(S) position and in position 1(S) the same aminoalkyloxime groups already reported for the digitoxigenin-like series in position 17beta. Although the ring conformation of these derivatives was comparable to that of uzarigenin, the binding affinities of the most active ones were 4/8-fold lower in comparison to that standard, Three compounds among those with the highest affinities were assayed in vitro for their inotropic activity on an electrically driven guinea pig left atrium and were found to be less potent than both digoxin, the most widely used inotropic agent, and the corresponding digitalis 17beta-aminoalkyloximes.
NOVEL OXAZOLIDINONE DERIVATIVE AND MEDICAL COMPOSITION CONTAINING SAME
申请人:Cho Young Lag
公开号:US20140179691A1
公开(公告)日:2014-06-26
Disclosed is a novel oxazolidinone derivative represented by Formula 1 above, in particular, a novel oxazolidinone compound having a cyclic amidoxime or cyclic amidrazone group.
In Formula 1, R and Q are the same as defined in the detailed description.
In addition, disclosed is a pharmaceutical composition for an antibiotic which includes the novel oxazolidinone derivative of Formula 1, a prodrug thereof, a hydrate thereof, a solvate thereof, an isomer thereof, or a pharmaceutically acceptable salt thereof as an active ingredient.
The novel oxazolidinone derivative, the prodrug thereof, the hydrate thereof, the solvate thereof, the isomer thereof, and the pharmaceutically acceptable salt thereof have broad antibacterial spectrum against resistant bacteria, low toxicity and strong antibacterial effects against Gram-positive and Gram-negative bacteria and thus may be effectively used as antibiotics.
Synthesis of 5,6-dihydro-4<i>H</i>
-benzo[<i>d</i>
]isoxazol-7-one and 5,6-dihydro-4<i>H</i>
-isoxazolo[5,4-<i>c</i>
]pyridin-7-one Derivatives as Potential Hsp90 Inhibitors
A novel class of 5,6‐dihydro‐4H‐benzo[d]isoxazol‐7‐ones and 5,6‐dihydro‐4H‐isoxazolo[5,4‐c]pyridin‐7‐ones was designed, synthesized, and assayed to investigate the affinity toward Hsp90 protein. The synthetic route was based on a 1,3‐dipolar cycloaddition of nitriloxides, generated in situ from suitable benzaldoximes, with 2‐bromocyclohex‐2‐enones or 3‐bromo‐5,6‐dihydro‐1H‐pyridin‐2‐ones. Whereas all the compounds bearing a benzamide group on the bicyclic scaffold were devoid of activity, the derivatives carrying a resorcinol‐like fragment showed a remarkable inhibitory effect on Hsp90. Docking calculations were performed to investigate the orientation of the new compounds within the binding site of the enzyme.
Design and synthesis of novel allosteric MEK inhibitor CH4987655 as an orally available anticancer agent
The MAP kinase pathway is one of the most important pathways involved in cell proliferation and differentiation, and its components are promising targets for antitumor drugs. Design and synthesis of a novel MEK inhibitor, based on the 3D-structural information of the target enzyme, and then multidimensional optimization including metabolic stability, physicochemical properties and safety profiles were effectively performed and led to the identification of a clinical candidate for an orally available potent MEK inhibitor, CH4987655, possessing a unique 3-oxo-oxazinane ring structure at the 5-position of the benzamide core structure. CH4987655 exhibits slow dissociation from the MEK enzyme, remarkable in vivo antitumor efficacy both in mono-and combination therapy, desirable metabolic stability, and insignificant MEK inhibition in mouse brain, implying few CNS-related side effects in human. An excellent PK profile and clear target inhibition in PBMC were demonstrated in a healthy volunteer clinical study. (C) 2011 Elsevier Ltd. All rights reserved.
[EN] SIALIC-ACID LIGAND DECORATED THERAPEUTICS<br/>[FR] AGENTS THÉRAPEUTIQUES DÉCORÉS PAR UN LIGAND D'ACIDE SIALIQUE