Synthesis anti-inflammatory and anticancer activity evaluation of some pyrazole and oxadiazole derivatives
摘要:
Pyrazole derivatives IIa-l have been synthesized by condensation of chalcones Ia-f with hydrazine hydrate and phenyl hydrazine under microwave irradiation in good yields. Oxadiazole derivatives IVa-f have been synthesized by condensation of N'-hydroxypicolinamidine, N'-hydroxy isonicotinamidine, N'-hydroxypyrazine-2-carboxamidine with 2,5 dimethoxybenzaldehyde and 3-methoxy-4-hydroxy benzaldehyde, respectively. Structures assigned to IIa-l and IVa-f are fully supported by correct spectral and analytical data. All compounds (IIa-l & IVa-f) have been screened for anti-inflammatory and anticancer activities. Compounds IIj, IIk, and IVb exhibited good anti-inflammatory activity, while, IIa, c, j, and IVd showed better anticancer activity against four and three cancer cell lines, respectively.
Experimental and Theoretical Studies of the Spectroscopic Properties of Chalcone Derivatives
作者:Marek Pietrzak、Marek Józefowicz、Agnieszka Bajorek、Janina R. Heldt
DOI:10.1007/s10895-016-1981-2
日期:2017.3
combined with quantum-chemical modelling. To explore spectroscopic structure - property relationships the substituent (acceptor moiety) was chosen according to systematic variation in the Hammett parameter. It was shown that photophysical properties of the studied donor-acceptor (D-A) molecules can be predicted in terms of a simple model from the properties of individual chromophores (composite-model of
This invention relates to novel 1-hydroxyimino-3-phenyl-propanes of the formula
wherein R
1
to R
10
are as defined in the description and in the claims, as well as pharmaceutically acceptable salts thereof. These compounds are GPBAR1 agonists and may be used as medicaments for the treatment of diseases such as type II diabetes.
A series of non-steroidal GPBAR1 (TGR5) agonists was developed from a hit in a high-throughput screening campaign. Lead identification efforts produced biphenyl-4-carboxylic acid derivative (R)-22, which displayed a robust secretion of PYY after oral administration in a degree that can be correlated with the unbound plasma concentration. Further optimisation work focusing on reduction of the lipophilicity provided the 1-phenylpiperidine-4-carboxylic acid derivative (R)-29 (RO5527239), which showed an improved secretion of PYY and GLP-1, translating into a significant reduction of postprandial blood glucose excursion in an oral glucose tolerance test in DIO mice. (C) 2013 Elsevier Ltd. All rights reserved.