Novel products from Bischler-Napieralski reaction of arylacetyl-tryptophan esters. Synthesis of spiropentacyclic indolines structurally related to indole alkaloids

Article abstract of DOI:10.1080/00397919308009792

On treatment with TFAA N-arylacetyl-DL-tryptophan esters 7 furnish N-trifluoroacetyl spiropentacyclic indolines 8 in 81-91% yields and, in some cases, small amounts (3-5%) of β-carbolines 9.

Full text of DOI:10.1080/00397919308009792

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Synthetic Communications: An
International Journal for Rapid
Communication of Synthetic
Organic Chemistry
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Novel Products from Bischler-
Napieralski Reaction of
Arylacetyl-Tryptophan Esters.
Synthesis of Spiropentacyclic
Indolines Structurally Related
to Indole Alkaloids
K. M. Biswas a , R. N. Dhara a , S. Halder a , H. Mallik
a , A. Sinha-Chaudhuri a , P. De a & A. S. Brahmachari
a
a Department of Chemistry , University of Calcutta ,
92, Acharya Prafulla Chandra Road, Calcutta,
700009, India
Published online: 23 Sep 2006.
To cite this article: K. M. Biswas , R. N. Dhara , S. Halder , H. Mallik , A. Sinha-
Chaudhuri , P. De & A. S. Brahmachari (1993) Novel Products from Bischler-Napieralski
Reaction of Arylacetyl-Tryptophan Esters. Synthesis of Spiropentacyclic Indolines
Structurally Related to Indole Alkaloids, Synthetic Communications: An International
Journal for Rapid Communication of Synthetic Organic Chemistry, 23:3, 379-388, DOI:
10.1080/00397919308009792
To link to this article: http://dx.doi.org/10.1080/00397919308009792
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