Results 121 to 130 of about 755 (153)

Bisindole alkaloids.

The Alkaloids. Chemistry and biology, 2007
This chapter provides an overview on bisindole alkaloids. The indole–indole and tryptamine–tryptamine type, and related alkaloids are discussed. Tryptamine–tryptamine type with an additional monoterpene unit and related alkaloids are briefly discussed.
Kam, Toh Seok, Choo, Yeun Mun
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New Bisindole Alkaloids from Petchia Ceylanica

HETEROCYCLES, 1988
Two new bisindole alkaloids, ceylanine and ceylanicine, habe been isolated from Petchia ceylanica and their structures have been established on the basis of spectroscopic ...
_ Atta-ur-Rahman, Azra Pervin, Anjun Muzaffar, Kuruneruge Tuley Dayanada de Silva, Wellage Susil Jayalath Silva   +4 more
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Biologically active indole and bisindole alkaloids from Tabernaemontana divaricata

Organic & Biomolecular Chemistry, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Kam, Toh-Seok, Pang, Huey-Shen, Lim, Tuck-Meng   +2 more
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A partial synthesis of the Alstonia bisindole alkaloid villalstonine

Tetrahedron Letters, 1994
Abstract The partial synthesis of villalstonine 1 has been completed by coupling the macroline equivalent 2a with plant-derived (+)-pleiocarpamine 3 in 0.2N aq. hydrochloric acid in the presence of fluoride ion.
Yingzhi Bi, James M. Cook, Philip W. LeQuesne   +2 more
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Chapter 4 Bisindole Alkaloids

2006
Publisher Summary This chapter provides an overview on bisindole alkaloids. The indole–indole and tryptamine–tryptamine type, and related alkaloids are discussed. Tryptamine–tryptamine type with an additional monoterpene unit and related alkaloids are briefly discussed.
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New Bisindole Alkaloids from Tabernaemontana corymbosa

Journal of Natural Products, 2002
Ten new bisindole alkaloids of the vobasinyl-ibogan type, viz., conodiparines A-F (1-6), conodutarines A and B (7, 8), and cononitarines A and B (9, 10), were obtained from the leaf extract of the Malayan species Tabernaemontana corymbosa. The structures were determined using NMR and MS analysis.
Toh-Seok, Kam, Kooi-Mow, Sim, Huey-Shen, Pang   +2 more
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Aspidospermatan–aspidospermatan and eburnane-sarpagine bisindole alkaloids from Leuconotis

Phytochemistry, 2010
Leucofoline and leuconoline, representing the first members of the aspidospermatan-aspidospermatan and eburnane-sarpagine subclasses of the bisindole alkaloids, respectively, were isolated from the Malayan Leuconotis griffithii. The structures of these bisindole alkaloids were established using NMR and MS analysis, and in the case of leuconoline ...
Gan, Chew Yan, Low, Yun Yee, Robinson, W.T., Komiyama, K., Kam, Toh Seok   +4 more
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Syntheses of the Bisindole Alkaloids of the Genera Borreria and Flindersia

2014
Abstract The flinderoles and their structural isomers, the borreverines, have intriguing chemical structures and promising biological activity. These indole alkaloids each contain multiple stereocenters that challenge synthetic chemists to develop new reaction methods. Proven antimalarial activity further established the synthesis of these targets as
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Novel Bisindole Derivatives Of Catharanthus Alkaloids With Potential Cytotoxic Properties

2003
Pantropical plant Catharanthus roseus (L) G. Don is known as a source of valuable bisindole alkaloids: vinblastine (VBL) and vincristine (VCR), oncolytics widely used as sulfates in therapy of malignant diseases. They are biosynthesized in the plant from monoindolic vindoline and catharanthine, both derived from L-tryptophan and loganine units.
Joanna, Ruszkowska, Robert, Chrobak, Jerzy T, Wróbel, Zbigniew, Czarnocki   +3 more
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Bisindole Alkaloids of Pandaca caducifolia

Journal of Natural Products, 1982
Monique Zeches, Gabor Lukacs, Georges Massiot Louisette Le Men-Olivier, Maurice-Marie Debray   +3 more
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