Binaphthol-Derived Bisphosphoric Acids Serve as Efficient Organocatalysts for Highly Enantioselective 1,3-Dipolar Cycloaddition of Azomethine Ylides to Electron-Deficient Olefins
作者:Long He、Xiao-Hua Chen、De-Nan Wang、Shi-Wei Luo、Wen-Quan Zhang、Jie Yu、Lei Ren、Liu-Zhu Gong
DOI:10.1021/ja204218h
日期:2011.8.31
bifunctional chiral bisphosphoric acids through the formation of hydrogen bonds. The effect of the bisphosphoric acids on reactivity and stereochemistry of the three-component 1,3-dipolar cycloaddition reaction was also theoretically rationalized. The bisphosphoric acid catalyst 1a may take on a half-moon shape with the two phosphoric acid groups forming two intramolecular hydrogen bonds. In the case of maleates
[EN] INDOLE COMPOUNDS OR ANALOGUES THEREOF USEFUL FOR THE TREATMENT OF AGE-RELATED MACULAR DEGENERATION (AMD)<br/>[FR] COMPOSÉS INDOLIQUES OU ANALOGUES DE CEUX-CI UTILES DANS LE TRAITEMENT DE LA DÉGÉNÉRESCENCE MACULAIRE LIÉE À L'ÂGE (DMLA)
申请人:NOVARTIS AG
公开号:WO2012093101A1
公开(公告)日:2012-07-12
The present invention provides a compound of formula (I): a method for manufacturing the compounds of the invention, and its therapeutic uses. The present invention further provides a combination of pharmacologically active agents and a pharmaceutical composition.
Enantioselective construction of 2,5-dihydropyrrole skeleton with quaternary stereogenic center via catalytic asymmetric 1,3-dipolar cycloaddition involving α-arylglycine esters
作者:Feng Shi、Gui-Juan Xing、Wei Tan、Ren-Yi Zhu、Shujiang Tu
DOI:10.1039/c2ob26566d
日期:——
A catalyticasymmetricconstruction of synthetically and biologically important 2,5-dihydropyrrole scaffolds with concomitant creation of multiple chiral carbon centers including one quaternary stereogenic center in high yields (up to 99%) and excellent enantioselectivities (up to 99% ee) has been established via an organocatalytic 1,3-dipolarcycloaddition using α-arylglycine esters as azomethine precursors
Organocatalytic asymmetric intramolecular [3+2] cycloaddition: A straightforward approach to access multiply substituted hexahydrochromeno[4,3-b]pyrrolidine derivatives in high optical purity
作者:Nan Li、Jin Song、Xi-Feng Tu、Bin Liu、Xiao-Hua Chen、Liu-Zhu Gong
DOI:10.1039/c002369h
日期:——
A chiral phosphoric acid-catalyzed intramolecular 1,3-dipolar cycloaddition of 4-(2-formylphenoxy)butenoates with amino esters provides hexahydromeno[4,3-b]pyrrolidine derivatives in high enantioselectivity (up to 94% ee).
Catalytic chemoselective [3+3] cycloadditions of azomethine ylides with quinone monoimides leading to the construction of a dihydrobenzoxazine scaffold
作者:Cong-Shuai Wang、Ren-Yi Zhu、Yu-Chen Zhang、Feng Shi
DOI:10.1039/c5cc03341a
日期:——
A chemoselective [3+3] cycloaddition of in situ generated azomethine ylides with quinone monoimides has been established, which efficiently led to the construction of dihydrobenzoxazine frameworks with biological relevance.