The regioselective and enantioselective Michael addition between azlactones and o-hydroxy chalcone derivatives is reported. Enantiomerically enriched N,O-aminals with two continuous stereogenic centers are exclusively obtained in moderate to good yields with excellent diastereoselectivities and good to excellent enantioselectivities. The experimental results show that an o-hydroxy group on the ...

Two new flavanones and one chalcone were isolated from the peel of Citrus kinokuni Hort. ex Tanaka and identified as (2S)-5,6,7,8,4'-pentamethoxyflavanone (1), (2S)-5,6,7,3',4'-pentamethoxyflavanone (2) and 2'-hydroxy-3,4,3',4',6'-pentamethoxychalcone (3). The structures of new compounds were elucidated by spectroscopic analysis.

Cervical cancer is the second leading cause of death in women. Many treatments currently provide toxic effects on normal cells. Therefore, alternative treatment using chalcone derivatives has potent anticancer properties that can help reduce side effects. Chalcone with halogen and methoxy groups ring B potentially inhibit This research aimed to synthesize halogen-substituted by a green chemistr...

Cervical cancer is the second leading cause of death in women. Many treatments currently provide toxic effects on normal cells. Therefore, alternative treatment using chalcone derivatives has potent anticancer properties that can help reduce side effects. Chalcone with halogen and methoxy groups ring B potentially inhibit This research aimed to synthesize halogen-substituted by a green chemistr...

A Simple and convenient protocol is described for preparation of some new 5-(2’hydroxy-3’,5’-dichlorophenyl)-4-(4’-chlorobenzyl)-2-amino-1,3-thiazole and 5-(2’hydroxy-3’,5’-dichlorophenyl)-4-(4’-chlorobenzyl)-2-aminophenyl-1,3-thiazole, were synthesized by refluxing dibrominated chalcone with thiourea or N-phenyl thiourea in good yields. The newly synthesized titled compounds were screened for ...

Two new series of 2′-hydroxy-retro-chalcone derivatives have been synthesized and fully characterized by IR, 1H NMR, 13C NMR, and mass spectral data. All of these derivatives were evaluated for their antituberculosis activity against Mycobacterium tuberculosis H37Rv. Eight of the tested compounds inhibited the growth of the mycobacterial strain. Among them, compound (E)-1-[4-(decyloxy)phenyl]-3...

A new series of copolyester chalcone derivatives were synthesised from 1, 3-bis (4-hydroxy-3methoxyphenyl) propenone (BHMPP) and 1(3, 5-dihydroxyphenyl)-3-(4-methoxyphenyl) propenone (DHPMPP) with adipoyl, suberoyl, azeloyl and sebacoyl chlorides by phase transfer catalysed polycondensation method. The microstructure of the repeating unit was confirmed by IR, 1 H and 13 C NMR. These copolyester...

Hepatocellular carcinoma (HCC) is one of the most commonly diagnosed cancers worldwide. Chemoprevention of HCC can be achieved through the use of natural or synthetic compounds that reverse, suppress or prevent the development of cancer progression. In this study, we investigated the antiproliferative effects and the mechanism of action of two compounds, 2,3,4'-trimethoxy-2'-hydroxy-chalcone (C...

Viscum album L. has been used in the indigenous systems of medicine for treatment of headache and some inflammatory diseases. In order to evaluate this information, antinociceptive and anti-inflammatory activities of the five flavonoids (5,7-dimethoxy naringenin or 4',6'-dimethoxy chalcononaringenin) derivatives, isolated from the ethyl acetate fraction of the extract from V. album ssp. album, ...