Results 111 to 120 of about 1,276 (161)

Alkaloids from Roots of Alstonia yunnanensis

Planta Medica, 1983
Isolement de 6 alcaloides indoles des racines d'A. yunnanensis. Hormis la tetrahydroalstonine, les cinq autres alcaloides sont isoles pour la premiere fois d'une Alstonia sp.
C, Weiming, Y, Yaping, L, Xiaotian
exaly   +3 more sources

Alkaloids from Alstonia angustifolia

Phytochemistry, 2004
Six new alkaloids, viz., alstolactone, affinisine oxindole, lagumicine, N(4)-demethylalstonerine, N(4)-demethylalstonerinal, and 10-methoxycathafoline N(4)-oxide, in addition to 36 other known alkaloids, were obtained from the leaf extract of Alstonia angustifolia var. latifolia.
Toh-Seok, Kam, Yeun-Mun, Choo
openaire   +2 more sources

Alkaloids of Alstonia lanceolata

Phytochemistry, 1981
Abstract Thirteen alkaloids were isolated from the stem bark of Alstonia lanceolata .
J. Vercauteren, G. Massiot, T. Sévenet, B. Richard, V. Lobjois, L. Le Men-Olivier, J. Lévy   +6 more
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

Alkaloids of Alstonia coriacea

Phytochemistry, 1989
Abstract Seven alkaloids have been identified from the stem bark of Alstonia coriacea from New Caledonia. They are gentianine, 10-methoxy deplancheine, vincamajine, desmethylquaternine, 10-methoxy-3- epi -α-yohimbine, corialstonine and cabucraline. Corialstonine is a novel member of the little represented quinoline alkaloid series.
Abdallah Cherif, Georges Massiot, Louisette Le Men-Olivier, Jacques Pusset, Stéphane Labarre   +4 more
openaire   +1 more source

Chemical constituents of alstonia venenata R.Br.

Tetrahedron, 1965
Venenatine and isovenenatine, two new indole alkaloids from Alstonia venenata R.Br., have been shown to have structures I and V respectively.
T R, Govindachari, N, Viswanathan, B R, Pai, T S, Savitri   +3 more
openaire   +2 more sources