Results 171 to 180 of about 7,461 (217)

Alkaloids from Alstonia congensis

Phytochemistry, 1989
Abstract Fifteen alkaloids were found in the root bark, stem bark and leaves of Alstonia congensis. They are echitamidine, echitamine, nor-echitamine, 17-acetoxy-nor-echitamine, akuammicine, 12-methoxyakuammicine, 12-methoxy-N(4)-methylakuammicine, tubotaiwine, 12-methoxytubotaiwine, angustilobines A and B, 6,7-seco angustilo-bines A and B ...
Catherine Caron, Alain Graftieaux, Georges Massiot, Louisette Le Men-Olivier, Clement Delaude   +4 more
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Alkaloids of Alstonia sphaerocapitata

Phytochemistry, 1984
Abstract Twenty alkaloids have been isolated from the leaves, fruit and stem-bark of Alstonia sphaerocapitata from New Caledonia. They were vincamedine, 10-methoxyvincamedine, Z-isositsirikine, akuammicine, quaternoline, 11-methoxyakuammicine, tubotaiwine, 10-methoxyvincamedine N (4)-oxide, cabucraline, cathafoline, caberoline, vincoridine ...
C. Caron, Y. Yachaoui, G. Massiot, L. Le Men-Olivier, J. Pusset, T. Sévenet   +5 more
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Alkaloids of Alstonia angustifolia

Phytochemistry, 1988
Abstract Thirty-one alkaloids have been isolated from the leaves and from the stem bark of Alstonia angustifolia from Malaysia. Twenty of them were known compounds: yohimbine, O -acetyl yohimbine, pleiocarpamine, fluorocarpamine, cathafoline, cabucraline, N -1 desmethylquaternine, vincamajine, normacusine B, lochnerine, affinisine, akuammicine ...
K. Ghedira, M. Zeches-Hanrot, B. Richard, G. Massiot, L. Le Men-Olivier, T. Sevenet, S.H. Goh   +6 more
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Alstonia scholaris R. Br.

2007
Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part E), pp. 490-515 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 490, DOI: 10.5281/zenodo ...
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Alkaloids from Alstonia scholaris

Phytochemistry, 1997
Abstract Three new indole alkaloids, nareline ethyl ether, 5- epi -nareline ethyl ether and scholarine- N (4)-oxide, in addition to nareline methyl ether, picrinine and scholaricine were isolated from the leaf extract of Alstonia scholaris . © 1997 Elsevier Science Ltd.
Kam Toh-Seok, Nyeoh Kok-Tih, Sim Kooi-Mow, K. Yoganathan   +3 more
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Alkaloids of Alstonia plumosa

Phytochemistry, 1980
Abstract Nineteen indole alkaloids have been isolated from the root and stem barks of Alstonia plumosa, from New Caledonia.
M.J. Jacquier, J. Vercauteren, G. Massiot, L. Le Men-Olivier, J. Pussett, T. Sevenet   +5 more
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Alkaloids of Alstonia lanceolifera

Phytochemistry, 1981
Abstract Four new indole alkaloids, 10-methoxydeplancheine, 10,11-dimethoxy-1-methyl-deacetyl picraline benzoate, 10,11-dimethoxy-1-methyl-deacetyl picraline 3′,4′,5′-trimethoxybenzoate and 10,11-dimethoxy-1-methyl-deacetyl picraline were isolated from the leaves of Alstonia lanceolifera .
N. Petitfrere-Auvray, J. Vercauteren, G. Massiot, G. Lukacs, T. Sevenet, L. Le Men-Olivier, B. Richard, M.-J. Jacquier   +7 more
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Alkaloids of Alstonia macrophylla

Phytochemistry, 1987
Abstract A new alkaloid, 19-hydroxyvincamajine, has been isolated from the leaves of Alstonia macrophylla . In addition to this, eight other indole alkaloids, alstonerine, alstophylline, macralstonine, anhydromacralstonine, talcarpine, vincamajine, vincorine and cabucraline, were also isolated and identified from the bark and leaves of A ...
Chitra K. Ratnayake, Lakshmi S.R. Arambewela, K.T.D. De Silva, null Atta-ur-Rahman, K.A. Alvi   +4 more
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Indole Alkaloids fromAlstonia angustifolia

Planta Medica, 1989
From the stem bark of ALSTONIA ANGUSTIFOLIA, eleven alkaloids were isolated. Seven of them are known ones: echitamine ( 1), N(b)-demethylechitamine ( 2), pseudoakuammigine ( 3), tubotaiwine ( 5), akuammicine ( 6), N(b)-beta-methylantirhine ( 12), and N(b)-methylakuammidine ( 13). The four others, pseudoakuammigine N-oxide ( 4), akuammicine N-oxide ( 7),
W L, Hu, J P, Zhu, M, Hesse
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Oxindole alkaloids from Alstonia macrophylla

Phytochemistry, 1996
Abstract Two new oxindole alkaloids, Nb-demethylalstophyllal oxindole and alstonal, together with three known alkaloids, Nb-demethylalstophylline oxindole, alstonisine and talcarpine, have been isolated from the bark of Alstonia macrophylla.
Wah-Hun Wong, Pek-Boon Lim, Cheng-Hock Chuah   +2 more
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