A visible-light-driven and room temperature photo-Wolff-Kischner reaction of sulfur ylides and N-tosylhydrazones has been developed for the first time to provide modular access to alkene synthesis. The high functional group tolerance and broad substrate scope were demonstrated by more than 60 examples. Both E- and Z-olefinic stereochemistry in the products could be controlled with excellent stereoselectivity
AL-ARAB, MOHAMMAD M., J. HETEROCYCL. CHEM., 26,(1989) N, C. 1665-1673
作者:AL-ARAB, MOHAMMAD M.
DOI:——
日期:——
Structure−Activity Relationships in a Series of Orally Active γ-Hydroxy Butenolide Endothelin Antagonists
作者:William C. Patt、Jeremy J. Edmunds、Joseph T. Repine、Kent A. Berryman、Billy R. Reisdorph、Chet Lee、Mark S. Plummer、Aurash Shahripour、Stephen J. Haleen、Joan A. Keiser、Mike A. Flynn、Kathleen M. Welch、Elwood E. Reynolds、Ron Rubin、Brian Tobias、Hussein Hallak、Annette M. Doherty
DOI:10.1021/jm9606507
日期:1997.3.1
to the subnanomolar ETA selective antagonist PD156707, IC50's = 0.3 (ET(A)) and 780 nM (ET(B)). This series of compounds exhibited functional activity exemplified by PD156707. This derivative inhibited the ETA receptor mediated release of arachidonic acid from rabbit renal artery vascular smoothmuscle cells with an IC50 = 1.1 nM and also inhibited the ET-1 induced contraction of rabbit femoral artery
Major anti-inflammatoryagents, steroids and cyclooxygenase, were proved to have serious side effects. Here, a series of chalconederivatives were synthesized and screened for anti-inflammatory activities. QSAR study revealed that the presence of electron-withdrawing groups in B-ring and electron-donating groups in A-ring of chalcones was important for inhibition of LPS-induced IL-6 expression. Further