Synthesis, biological evaluation and QSAR studies of diarylpentanoid analogues as potential nitric oxideinhibitors
作者:S. M. Mohd Faudzi、S. W. Leong、F. Abas、M. F. F. Mohd Aluwi、K. Rullah、K. W. Lam、S. Ahmad、C. L. Tham、K. Shaari、N. H. Lajis
DOI:10.1039/c4md00541d
日期:——
A series of forty-five diarylpentadienone analogues were synthesized and were screened for their anti-inflammatory properties. Compound 7d had potent nitric oxide (NO) activity with an IC50 value of 10.24 μM.
Michael Addition‐Elimination and [4+1] Annulation of Sulfonylphthalide with Hydroxychalcones for the Synthesis of Alkylidenephthalides and Indanediones
作者:Nishikant Satam、Pallabita Basu、Soumyaranjan Pati、Irishi N. N. Namboothiri
DOI:10.1002/ejoc.202100512
日期:2021.6.25
A stereoselective synthesis of alkylidenephthalides through Michael addition-elimination has been demonstrated by employing 3-sulfonylphthalide and o-hydroxychalcones. Interestingly, the conjugated styrenyl o-hydroxychalcones afforded unsymmetrical indanediones through [4+1] Hauser-Kraus annulation. The strategically located phenolic group plays a pivotal role in controlling the reaction pathways.
A simple protocol for the synthesis of difluoromethylthiolated chromen-4-ones using elemental sulfur and ClCF2CO2Na as the difluoromethylthiolating agent is described. Three-component reactions of 2'-hydroxychalcones, ClCF2CO2Na, and sulfur under basic conditions using TEMPO as the oxidant afforded HCF2S-containing 4H-chromen-4-one and 9H-thieno[3,2-b]chromen-9-one derivatives in good yield. The protocol