Results 131 to 140 of about 954 (177)

Bisindole alkaloids from Tabernaemontana corymbosa

Phytochemistry, 2018
Continued study in bioactive monoterpenoid alkaloids led to the isolation of nine undescribed alkaloids, taberyunines A-I, together with 32 known ones from the aerial parts of Tabernaemontana corymbosa Roxb. ex Wall (Apocynaceae). Among the undescribed alkaloids, taberyunines A-G and H-I were assigned to Aspidosperma-Aspidosperma and Vobasinyl-Ibogan ...
Bing-Jie, Zhang, Jing-Song, Lu, Mei-Fen, Bao, Xiu-Hong, Zhong, Ling, Ni, Jing, Wu, Xiang-Hai, Cai   +6 more
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Monoterpenoid Bisindole Alkaloids

2016
This chapter covers the literature on bisindole alkaloids consisting of monoterpenoid indoles, published up to June 2015. Bisindole alkaloids isolated from plants belonging to the families Apocynaceae and Loganiaceae, including Iboga-vobasine type, Aspidosperma-Aspidosperma type, eburnan-Aspidosperma type, Strychnos-Strychnos type, macroline-macroline ...
Mariko, Kitajima, Hiromitsu, Takayama
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ChemInform Abstract: Bisindole Alkaloids

ChemInform, 2009
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Toh‐Seok Kam, Yeun‐Mun Choo
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Synthesis of Marine Sponge Bisindole Alkaloids Dihydrohamacanthins

Organic Letters, 2002
[structure: see text] A convergent synthesis of the marine sponge bisindole alkaloids dihydrohamacanthins is described. The synthesis centers on the construction of 3,5- and 3,6-linked pyrazinones and their reduction to the requisite piperazinones with sodium cyanoborohydride.
Fumiko Y, Miyake, Kenichi, Yakushijin, David A, Horne   +2 more
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The IBOGA alkaloids and their role as precursors of anti-neoplastic bisindole catharanthus alkaloids

ChemInform, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
Richard J, Sundberg, Stanton Q, Smith
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Synthesis of a novel series of cytotoxic bisindole alkaloids

Bioorganic & Medicinal Chemistry Letters, 2001
Original cytotoxic bisindole alkaloids with a 1,2,3,4-tetrahydroquinoline bridge were synthesized by reductive amination with various anilines. The most cytotoxic compounds display a high and dose-dependent cell cycle effect with accumulation in the G1 phase.
M, Raoul, C, Schaeffer, S, Léonce, A, Pierré, G, Atassi, R, Hocquemiller, G, Lewin   +6 more
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Alternative partial synthesis of bisindole alkaloids

Tetrahedron Letters, 1990
Abstract Indoline derivatives of the pericyclivine series are oxidized at position 6 with DDQ; the corresponding alcohols are coupled with nucleophilic indolines under acid conditions to yield dimers similar to undulatine.
G. Massiot, J.M. Nuzillard, B. Richard, L. Le Men-Olivier   +3 more
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Ceridimine: a novel type of bisindole monoterpene alkaloid

Journal of the Chemical Society, Chemical Communications, 1986
The structure determination and synthesis of ceridimine (1), a novel type of bisindole monoterpene alkaloid isolated from Pagiantha cerifera(Apocynaceae), are reported.
Genevi�ve Baudouin, Fran�ois Tillequin, Maryse Bert, Michel Koch   +3 more
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Bisindole alkaloid artifacts from Gonioma malagasy

Tetrahedron Letters, 2013
Abstract Three new bisindole alkaloids ( 1 – 3 ), possessing a rare carbon skeleton formed by two indole moieties fused via a dihydropyran unit, were isolated from the alkaloid extract of the stem bark of Gonioma malagasy . Their structure and absolute configuration were assigned thanks to a combination of one and two dimensional NMR spectroscopy ...
Beniddir, Mehdi A, Martin, M. T., Tran, Huu Dau Marie Elise, Rasoanaivo, Philippe, Guéritte, Francoise, Litaudon, Marc   +5 more
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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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