Results 141 to 150 of about 971 (184)
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Crooksiine, a bisindole alkaloid from Haplophyton crooksii
Phytochemistry, 1991Abstract Crooksiine, a new bisindole alkaloid with antiacetylcholinesterase activity was isolated from Haplophyton crooksii . Its structure was established utilizing spectrometric methods.
Mohamad Mroue
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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 +2 more
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Ceridimine: a novel type of bisindole monoterpene alkaloid
Journal of the Chemical Society Chemical Communications, 1986The structure determination and synthesis of ceridimine (1), a novel type of bisindole monoterpene alkaloid isolated from Pagiantha cerifera(Apocynaceae), are reported.
Michel Koch
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, 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.
Toh-Seok Kam +3 more
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Bisindole alkaloid artifacts from Gonioma malagasy
Tetrahedron Letters, 2013Abstract 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 ...
Mehdi A Beniddir +2 more
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Partial synthesis of the antiamoebic bisindole alkaloid (−)-macrocarpamine
Tetrahedron Letters, 1996Abstract The partial synthesis of the antiamoebic bisindole alkaloid (−)-macrocarpamine 1 has been completed by coupling (−)-anhydromacrosalhine-methine 2 with plant-derived (+)-pleiocarpamine 3 in anhydrous 0.2 N HCl in THF in 75% yield.
Tong Gan, James M Cook
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Phytochemistry, 2011 A total of 20 alkaloids were isolated from the leaf and stem-bark extracts of Alstonia angustiloba, of which two are hitherto unknown. One is an alkaloid of the angustilobine type (angustilobine C), while the other is a bisindole alkaloid angustiphylline,
Shin-Jowl Tan +2 more
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Bisleucocurine A, a novel bisindole alkaloid from Leuconotis griffithii
Tetrahedron Letters, 2010 A novel bisindole alkaloid, bisleucocurine A (1), consisting of two strychnan skeletons with an N-1-C-17' and a C-12-C-2' bridges, was isolated from the leaves of Leuconotis griffithii and the structure was elucidated on the basis of spectroscopic data ...
Alfarius Eko Nugroho +2 more
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Voacinol: a new bisindole alkaloid from Voacanga Grandifolia(Miq) Rolfe
Journal of the Chemical Society Chemical Communications, 1987 Voacinol, a new bisindole alkaloid from Voacanga grandifolia has been assigned a 14,14'-methylene-bis-18-hydroxytabersonine structure (1), on the basis of spectral ...
Govindachari, Tuticorin R. +3 more
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Bisindole alkaloids from Tabernaemontana corymbosa
Phytochemistry, 2018Continued 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 +6 more
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