69876-37-5Relevant articles and documents
Scandium-mediated opening of aziridine carboxylates: A facile synthesis of aryl substituted tryptophans
Bennani, Youssef L.,Zhu, Gui-Dong,Freeman, Jennifer C.
, p. 754 - 756 (1998)
The treatment of enantiomerically pure L-serine-derived N-Cbz- or N-Fmoc-aziridine carboxylates with indole derivatives in the presence of a stoichiometric amount of Sc(OTf)3 in dichloromethane at 0°C or RT gives the aryl-substituted and protected tryptop
NOVEL TRICYCLIC CHIRAL COMPOUNDS AND THEIR USE IN ASYMMETRIC CATALYSIS
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Page/Page column 20, (2011/11/12)
The present invention relates to a compound of general Formula (XX), its formation and its use in asymmetric catalysis. In Formula (XX) R and R31 are independently —COOR3, —R4COOR3, —R4CHO, —R4COR3, —R4CONR5R6, —R4COX, —R4OP(═O)(OH)2, —R4P(═O)(OH)2), —R4C(O)C(R3)CR5R6 and —R4CO2COR3. In addition, R31 may also be hydrogen. R3, R5 and R6 are independently hydrogen, an aliphatic group with a main chain having 1 to about 20 carbon atoms, an alicyclic group, an aromatic group, an arylaliphatic group or an arylalicyclic group, comprising 0 to about 3 heteroatoms independently selected from the group consisting of N, O, S, Se and Si. R4 an aliphatic bridge with a main chain having 1 to about 20 carbon atoms, an alicyclic bridge, an aromatic bridge, an arylaliphatic bridge or an arylalicyclic bridge, comprising 0 to about 3 heteroatoms independently selected from the group consisting of N, O, S, Se and Si, and X is halogen. In Formula (XX) R30 is —C(OH)R1R2 or —COOR14, wherein R1, R2 and R14 are independently hydrogen, an aliphatic group with a main chain having 1 to about 20 carbon atoms, an alicyclic group, an aromatic group, an arylaliphatic group or an arylalicyclic group, comprising 0 to about 3 heteroatoms independently selected from the group consisting of N, O, S, Se and Si.
Unexpected domino ring closure: highly stereoselective construction of a tetracyclic indole alkaloid ring system
Xiao, Jian,Loh, Teck-Peng
scheme or table, p. 7184 - 7186 (2009/04/10)
An unexpected highly stereoselective domino ring closure gave the tetracyclic indole alkaloid IV-2 in good yield in one hydrogenation step. Crown Copyright
