The acetoxyindoles 10 and 11 are efficiently converted (85-95%) into the dihydro-1, 2-
oxazines 13 and 14, respectively, by reaction with the transient nitroso olefin 2, prepared in …

Tetrahedron Letters,Vol.28,No.25,pp 2879-2882,1987 0040-4039/87 $3.00 + .OO Printed in
Great Britain Pergamon Journals Ltd. SYNT Page 1 Tetrahedron Letters,Vol.28,No.25,pp …

The assembly of architecturally complex alkaloids embedding the indole nucleus is of
paramount importance for the target oriented synthesis of biologically active molecules. 1 A …

Attempts to isolate 3, 3-spiro-cyclicindolenines thought to be intermediates in the cyclization
of benzylidenetryptamines to tetrahydro-β-carbolines are described. One such spiro …

The oxidation of 2-aryl tryptamines followed by a stereoselective rearrangement provides a
versatile strategy for the synthesis of C3-quaternary oxindoles bearing a C3-aryl group …

The stereoselective formation of 2-endo-substituted hexahydropyrrolo [2, 3-b] indoles from 2-
substituted tryptamine derivatives, especially tryptophan, is discussed. Parallels are drawn …

We have thus far provided the groundwork for investigations of 1-hydroxy-and 1-
alkoxyindoles and 1-hydroxytryptophans and-tryptamines, and discovered that they undergo …

3, 3-Disubstituted N-(2-hydroxyethyl)-2-[1-(phenylsulfonyl)-3-indolyl]-piperidine 4 shows a
particular reactivity in front of KtBuO/BF3. Et2O: the intermediate spiroindolenine 15 evolves …

Base-assisted transformations of 2-(3-oxoindolin-2-yl) acetonitriles were investigated.
Unexpectedly, attempted reactions of substrates possessing nonprotected nitrogen atoms …

Novel Products from Bischler-Napieralski Reaction of Arylacetyl-Tryptophan Esters. Synthesis of
Spiropentacyclic Indolines Struc Page 1 SYNTHETIC COMMUNICATIONS, 23(3), 379-388 (1993) …