Stereocontrolled construction of six vicinal stereogenic centers on a hexahydroxanthone framework through a formal [2+1+3] annulation.
DOI Number:
10.1039/C9CC08101A
Reaction Category:
Educt:
substituted 4-oxo-4H-chromene-3-carbaldehyde, substituted tert-butyl (E)-2-(1-acetyl-2-oxoindolin-3-ylidene)acetate
Product:
substituted tert-butyl (1'S,2'S,3S,3'R,4a'R,9a'S)-1-acetyl-1'-hydroxy-2'-nitro-9'-oxo-2',3',4a',9a'-tetrahydro-1'H,9'H-spiro[indoline-3,4'-xanthene]-3'-carboxylate
Catalyst:
N-[3,5-Bis(trifluoromethyl)phenyl]-N′-[(9R)-6′-methoxycinchonan-9-yl]thiourea
Cas No:
852913-25-8
Associated Product from Buchler GmbH:
Quinidine Base
Cas No:
56-54-2