Volume 96, Issue 7 pp. 1298-1304
Research Article

Structure and Dynamic of Three Indole Alkaloids from the Campylospermum Genus (Ochnaceae)

Gaétan Bayiha Ba Njock

Gaétan Bayiha Ba Njock

Section des sciences pharmaceutiques, Université de Genève, Université de Lausanne, 30 quai Ernest-Ansermet, CH-1211 Genève 4

Département de chimie organique, Université de Genève, 30 quai Ernest-Ansermet, CH-1211 Genève 4

Département de chimie organique, Faculté des Sciences, Université de Yaoundé I, BP 812 Yaoundé, Cameroun (phone: +237 77804176; fax: +237 22221873)

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Trixie Ann Bartholomeusz

Trixie Ann Bartholomeusz

Section des sciences pharmaceutiques, Université de Genève, Université de Lausanne, 30 quai Ernest-Ansermet, CH-1211 Genève 4

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Dominique Ngono Bikobo

Dominique Ngono Bikobo

Département de chimie organique, Faculté des Sciences, Université de Yaoundé I, BP 812 Yaoundé, Cameroun (phone: +237 77804176; fax: +237 22221873)

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Mohammadali Foroozandeh

Mohammadali Foroozandeh

Département de chimie organique, Université de Genève, 30 quai Ernest-Ansermet, CH-1211 Genève 4

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Rupali Shivapurkar

Rupali Shivapurkar

Département de chimie organique, Université de Genève, 30 quai Ernest-Ansermet, CH-1211 Genève 4

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Philippe Christen

Philippe Christen

Section des sciences pharmaceutiques, Université de Genève, Université de Lausanne, 30 quai Ernest-Ansermet, CH-1211 Genève 4

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Dieudonné Emmanuel Pegnyemb

Corresponding Author

Dieudonné Emmanuel Pegnyemb

Département de chimie organique, Faculté des Sciences, Université de Yaoundé I, BP 812 Yaoundé, Cameroun (phone: +237 77804176; fax: +237 22221873)

Département de chimie organique, Faculté des Sciences, Université de Yaoundé I, BP 812 Yaoundé, Cameroun (phone: +237 77804176; fax: +237 22221873)Search for more papers by this author
Damien Jeannerat

Damien Jeannerat

Département de chimie organique, Université de Genève, 30 quai Ernest-Ansermet, CH-1211 Genève 4

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First published: 12 July 2013
Citations: 10

Abstract

A new indole alkaloid, calanthumindole (4), and three known biflavonoids, amentoflavone, sequoiaflavone, and podoscarpusflavone B, were isolated from Campylospermum calanthum (Ochnaceae). Calanthumindole is a new indole alkaloid of the serotobenine family characterized by the presence of a CC bond between atoms C(7′) and C(8′) of the furan ring. This is the first compound to have a fully unsaturated furan ring among the members of this family. The combination of NMR and DFT allowed the determination and comparison of the 3D structures and relevant conformational characteristics of serotobenine (1), flavumindole (2), and calanthumindole (4).

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