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One-step construction of 2,3,3a,8a-tetrahydrofuro[2,3-b]indole system: an application to physovenine synthesis

โœ Scribed by Tadamasa Onaka

Book ID
104248318
Publisher
Elsevier Science
Year
1971
Tongue
French
Weight
120 KB
Volume
12
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

The alkaloidal constituents of Calabar beans belong to a small group of indole alkaloids whose structure consists of tryptamine and one extra carbon unit. These alkaloids, represented by the general formult,I, has been comprehensively investigations. studied and there are excellent reviews"Lt including synthetic u.Y RI Rl R2 z

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Synthesis of the 3a-(3-Indolyl)-1,2,3,3a,8,8a-hexahydropyrrolo[2,3b]indole Core of Leptosins D-F. -The Fischer indole reaction of the previously reported L-tryptophan-derived aldehyde (I) with phenyl hydrazine in the presence of freshly fused zinc chloride provides the core unit (IV) of the leptosin