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A biomimetic total synthesis of (-)-spirotryprostatin B and related studies

Wang, H. S. and Ganesan, A. (2000) A biomimetic total synthesis of (-)-spirotryprostatin B and related studies Journal of Organic Chemistry, 65, (15), pp. 4685-4693. (doi:10.1021/jo000306o).

Record type: Article


The prenylated natural products spirotryprostatin A and B derived from the Trp-Pro diketopiperazine also feature an oxidative rearrangement of the indole to form a spirooxindole. Synthetically, formation of the oxindole ring was stereoselectively accomplished by reaction of the appropriate indole precursor with N-bromosuccinimide. For optimum results, the oxidation should be carried out prior to diketopiperazine cyclization. In this manner, we have synthesized the tetrahydro- and dihydro- analogues of spirotryprostatin B in four steps from L-tryptophan methyl ester. The dihydro derivative was then converted to spirotryprostatin B by unsaturation of the pyrrolidine ring to a pyrroline, thus unambiguously confirming the structure of the natural product.

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Published date: 28 July 2000
Keywords: mammalian-cell cycle, aspergillus-fumigatus, spirotryprostatin-a, oxindole alkaloids, tryprostatin-a, stereoselective synthesis, g2/mphase, inhibitors, derivatives, fumitremorgins


Local EPrints ID: 19068
ISSN: 0022-3263
PURE UUID: 19d07b93-5765-43fc-819a-dc8d14ee81fc

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Date deposited: 18 Jan 2006
Last modified: 17 Jul 2017 16:33

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Author: H. S. Wang
Author: A. Ganesan

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