3462-95-1Relevant articles and documents
Chiral Imidodiphosphoric Acid-Catalyzed Highly Diastereo- and Enantioselective Synthesis of Poly-Substituted 3,4-Dihydro-2 H-pyrans: [4 + 2] Cycloadditions of β,γ-Unsaturated α-Ketoesters and 3-Vinylindoles
Guan, Xu-Kai,Liu, Guo-Feng,An, Dong,Zhang, Heng,Zhang, Suo-Qin
supporting information, p. 5438 - 5442 (2019/08/01)
Imidodiphosphoric acids were employed to catalyze inverse-electron-demand hetero-Diels-Alder reaction of β,γ-unsaturated α-ketoesters and 3-vinylindoles. A series of optically active 3,4-dihydro-2H-pyran derivatives with three contiguous stereogenic centers was synthesized in excellent yields (70-99%), diastereoselectivities (>20:1), and enantioselectivities (73-99%). The resulting indole containing 3,4-dihydro-2H-pyran could be converted to tetrahydropyran derivatives, which appear in several biological active compounds by simple hydrogenation reduction.
Syntheses of p-terphenyls and 11,12-dihydroindeno[2,1-a]fluorene by one-pot benzannulation of Diels-Alder reactions of trans-1,2-dichloroethene and dienes
Ho, Jinn-Hsuan,Lin, Yu-Chen,Chou, Li-Ting,Chen, Ying-Zhe,Liu, Wei-Qi,Chuang, Chao-Li
supporting information, p. 1991 - 1993 (2013/04/10)
A series of substituted p-terphenyls and 11,12-dihydroindeno[2,1-a]fluorene were successfully synthesized by one-pot benzannulation of Diels-Alder reaction with 1,2-dichloroethene as an acetylene equivalent dienophile. Two chlorine atoms could be good leaving groups to easily undergo subsequent elimination reactions of Diels-Alder products at a high temperature.
Synthesis and biological evaluation of some stilbene-based analogues
Karki, Subhas S.,Bhutle, Santosh R.,Pedgaonkar, Ganesh S.,Zubaidha,Shaikh, Rizwan M.,Rajput, Chitra G.,Shendarkar, Girish S.
experimental part, p. 1158 - 1163 (2012/05/05)
The phytoalexin 3,5,40-trihydroxy-trans-stilbene (resveratrol) has attracted considerable attention from biologists and chemists due to its diverse biological properties. Owing to the biological importance of this compound, we have synthesized new stilbene-based analogues by using substituted benzyl chlorides and substituted aldehydes in a two-step reaction and evaluated their in vitro antioxidant, antibacterial and antifungal potential. Most of the compounds displayed moderate to significant radical scavenging activity. (E)-1-(3,4-difluorophenyl)-2-(4-fluorophenyl) ethene (4c) showed nearer equipotent antibacterial activity against Staphylococcus aureus. (E)-1,2-bis (4-fluorophenyl)ethene (4a), (E)-1-(3-fluorophenyl)-2-(4-fluorophenyl)ethene (4b), (E)-1-(2,4-dichlorophenyl)-2-(3, 4-dichlorophenyl)ethene (4f), (E)-1-(2,4-dichlorophenyl)-2-(3-chlorophenyl)ethene (4g), (E)-1-(2,4- dichlorophenyl)-2-(4-fluorophenyl)ethene (4j) (E)-1-(4-fluorophenyl)-2-(3- chlorophenyl)ethene (4l) and (E)-1-(4-chlorophenyl)-2-(4-fluorophenyl)ethene (4n) inhibited the growth of Penicillium chrysogenum. Springer Science+Business Media, LLC 2010.
