Highly Efficient Hydrogen-Bonding Catalysis of the Diels–Alder Reaction of 3-Vinylindoles and Methyleneindolinones Provides Carbazolespirooxindole Skeletons
作者:Bin Tan、Gloria Hernández-Torres、Carlos F. Barbas
DOI:10.1021/ja203812h
日期:2011.8.17
Carbazolespirooxindole derivatives were synthesized in a high-yielding, atypically rapid, stereocontrolled Diels-Alderreaction catalyzed by a C(2)-symmetric bisthiourea organocatalyst. Simple precursors and mild conditions were used to construct carbazolespirooxindole derivatives with high enantiopurity and structural diversity under H-bonding catalysis. The practical approach recycles the organocatalyst
[EN] AMIDE COMPOUNDS FOR TREATMENT OF MEDICAL DISORDERS<br/>[FR] COMPOSÉS AMIDE POUR LE TRAITEMENT DE TROUBLES MÉDICAUX
申请人:ACHILLION PHARMACEUTICALS INC
公开号:WO2017035349A1
公开(公告)日:2017-03-02
Compounds, methods of use, and processes for making inhibitors of complement Factor D comprising Formula I, or a pharmaceutically acceptable salt or composition thereof wherein R12 or R13 on the A group is an amide substituent (R32) are provided. The inhibitors described herein target Factor D and inhibit or regulate the complement cascade. The inhibitors of Factor D described herein are capable of reducing the excessive activation of complement.
A highly efficient catalytic asymmetric Diels-Alderreaction between 3-vinylindoles and methyleneindolinones has been achieved using chiral N,N'-dioxide-Ni(II) complexes as the catalysts. A wide variety of substrates were readily tolerated, generating exclusively the corresponding exo-carbazolespirooxindole derivatives in excellent yields with high enantiomeric excesses (up to 98% yield, >99 : 1 d
Organocatalytic Asymmetric Synthesis of Tetracyclic Pyridocarbazole Derivatives by Using a Diels-Alder/aza-Michael/Aldol Condensation Domino Reaction
作者:Dieter Enders、Céline Joie、Kristina Deckers
DOI:10.1002/chem.201302127
日期:2013.8.12
Triple domino: An organocatalyticasymmetric triple cascade reaction to form tetracyclic pyridocarbazole derivatives is described. The new protocol includes a Diels–Alder/aza‐Michael/aldol condensation sequence. Up to six stereogenic centers are formed with excellent diastereo‐ and enantioselectivity. IM = iminium activation; EN = enamine activation.