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Relevant academic research and scientific papers

austria takes charge of his Wei derivative and its preparation method and application

The invention relates to an oseltamivir derivative as well as a preparation method and application thereof. The compound has the structure shown in a formula I. The invention provides an efficient influenza virus neuraminidase inhibitor with high selectivity, which is used for preparing drugs for preventing or curing flu, particularly the diseases caused by N1 influenza virus. The invention also relates to a drug composition comprising the compound shown in the formula I.

Discovery of N-substituted oseltamivir derivatives as potent and selective inhibitors of H5N1 influenza neuraminidase

To discover group-1-specific neuraminidase (NA) inhibitors that are especially involved in combating the H5N1 virus, two series of oseltamivir derivatives were designed and synthesized by targeting the 150-cavity. Among these, compound 20l was the most potent N1-selective inhibitor, with IC50 values of 0.0019, 0.0038, and 0.0067 μM against NAs from three H5N1 viruses. These values are better than those of oseltamivir carboxylate. Compound 32 was another potent N1-selective inhibitor that exhibited a 12-fold increase in activity against the H274Y mutant relative to oseltamivir carboxylate. Molecular docking studies revealed that the 150-cavity was an auxiliary binding site that may contribute to the high selectivity of these compounds. The present work is a significant breakthrough in the discovery of potent group-1-specific neuraminidase inhibitors, which may be further investigated for the treatment of infection by the H5N1 virus.

NOVEL NITROGEN-CONTAINING HETEROCYCLIC COMPOUND AND ORGANIC ELECTRONIC DEVICE USING THE SAME

The present invention provides a novel nitrogen-containing heterocyclic derivative and an organic electronic device using the same. The organic electronic device according to the present invention has excellent properties in terms of efficiency, driving voltage, and a life span.

FUNGICIDE N-CYCLOALKYL-N-BIPHENYLMETHYL-CARBOXAMIDE DERIVATIVES

The present invention relates to N-cycloalkyl-N-biphenylmethyl-carboxamide derivatives of formula (I) wherein A, Z1, Z2, Z3, X, n, Y and m represent various substituents, their process of preparation, preparation intermediate compounds, their use as fungicide active agents, particularly in the form of fungicide compositions and methods for the control of phytopathogenic fungi, notably of plants, using these compounds or compositions.

ERβ ligands. Part 2: Synthesis and structure-activity relationships of a series of 4-hydroxy-biphenyl-carbaldehyde oxime derivatives

A series of biphenyl carbaldehyde oximes (6) was prepared and shown to have significant selectivity for the estrogen receptor-β (ERβ). The exploitation of the oxime moiety as a hydrogen bond donating group, which mimicked the C-ring of genistein makes these compounds unique. Molecular modeling studies showed the oxime moiety hydrogen bonding to the histidine residue, which was supported by the structure-activity relationships. The most potent compounds in this study had IC50 values in a radioligand binding assay of between 8-35nM. Among the most selective compounds were 6i and 6s (49- and 31-fold ERβ selective, respectively).

Monobenzoxazolylstilbenes

Monobenzoxazolylstilbenes of formula STR1 wherein R--O is lower alkoxy and stands in one of the positions 5 or 6, R1 is hydrogen or lower alkyl and R2 is hydrogen, chlorine or lower alkyl.