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Veröffentlichungsdatum
Anzahl der Publikationen: 20
1994
Rüffer, Martina und Zenk, Meinhart H.
(1994):
Canadine synthase from Thalictrum tuberosum cell cultures catalyses the formation of the methylenedioxy bridge in berberine synthesis.
In: Phytochemistry, Bd. 36, Nr. 5: S. 1219-1223
[PDF, 543kB]
Rüffer, Martina; Bauer, Wolfgang und Zenk, Meinhart H.
(1994):
The formation of corydaline and related alkaloids in Corydalis cava in vivo and in vitro.
In: Canadian Journal of Chemistry, Bd. 72: S. 170-175
[PDF, 1MB]
1990
Rüffer, Martina; Zumstein, G. und Zenk, Meinhart H.
(1990):
Partial purification and properties of S-Adenosylmethionine. (S)-tetrahydroprotoberberine-cis-N-methyltransferse from suspension cultured cells of Eschscholtzia and Corydalis.
In: Phytochemistry, Bd. 29, Nr. 12: S. 3727-3733
[PDF, 632kB]
1988
Galneder, E.; Rüffer, Martina; Wanner, G.; Tabata, M. und Zenk, Meinhart H.
(1988):
Alternative final steps in berberine biosynthesis in Coptis japonica cell cultures.
In: Plant Cell Reports, Bd. 7, Nr. 1: S. 1-4
[PDF, 613kB]
1987
Rüffer, Martina und Zenk, Meinhart H.
(1987):
Enzymatic formation of protopines by a microsomal cytochrome P-450 system of Corydalis vaginans.
In: Tetrahedron Letters, Bd. 28, Nr. 44: S. 5307-5310
[PDF, 217kB]
Rüffer, Martina und Zenk, Meinhart H.
(1987):
Distant precursors of benzylisoquinoline alkaloids and their enzymatic formation.
In: Zeitschrift für Naturforschung, Bd. 42c: S. 319-332
[PDF, 3MB]
1986
Rüffer, Martina und Zenk, Meinhart H.
(1986):
S-adenosyl-l-methionine: (S) -7,8,13, 14-tetrahydroberberine--n-methyltransferase, a branch point enzyme in the biosynthesis of benzophenanthridine and protopine alkaloids.
In: Tetrahedron Letters, Bd. 27, Nr. 46: S. 5603-5604
[PDF, 120kB]
Rüffer, Martina und Zenk, Meinhart H.
(1986):
Columbamine, the central intermediate in the late stages of protoberberine biosynthesis.
In: Tetrahedron Letters, Bd. 27, Nr. 8: S. 923-924
[PDF, 136kB]
1985
Mümmler, S.; Rüffer, Martina; Nagakura, Naotaka und Zenk, Meinhart H.
(1985):
S-adenosyl-L-methionine: (S)-scoulerine 9-O-methyltransferase, a highly stereo- and regio-specific enzyme in tetrahydroprotoberberine biosynthesis.
In: Plant Cell Reports, Bd. 4, Nr. 1: S. 36-39
[PDF, 309kB]
Rüffer, Martina
(1985):
The production of isoquinoline alkaloids by plant sell cultures.
In: Philipson, John D. (Hrsg.):
The chemistry and biology of isoquinoline alkaloids. Berlin u.a.: Springer. S. 265-280
[PDF, 1MB]
Zenk, Meinhart H.; Rüffer, Martina; Amann, Manfred; Deus-Neumann, Brigitte und Nagakura, Naotaka
(1985):
Benzylisoquinoline Biosynthesis by Cultivated Plant Cells and Isolated Enzymes.
In: Journal of Natural Products, Bd. 48, Nr. 5: S. 725-738
[PDF, 829kB]
1983
Rüffer, Martina; Ekundayo, O.; Nagakura, Naotaka und Zenk, Meinhart H.
(1983):
Biosynthesis of the protoberberine alkaloid jatrorrhizine.
In: Tetrahedron Letters, Bd. 24, Nr. 26: S. 2643-2644
[PDF, 131kB]
Rüffer, Martina; Nagakura, Naotaka und Zenk, Meinhart H.
(1983):
A highly specific O-methyltransferase for nororientaline synthesis isolated from Argemone platyceras cell cultures.
In: Planta Medica, Bd. 49: S. 196-198
[PDF, 1MB]
Schumacher, H. M.; Rüffer, Martina; Nagakura, Naotaka und Zenk, Meinhart H.
(1983):
Partial Purification and Properties of S-Adenosylmethionine. (R), (S)-Norlaudanosoline-6-O-Methyltransferase from Eschscholtzia tenuifolia Cell Cultures.
In: Planta Medica, Bd. 49: S. 131-137
[PDF, 1MB]
Schumacher, H. M.; Rüffer, Martina; Nagakura, Naotaka und Zenk, Meinhart H.
(1983):
Partial purification and properties of (S)-norlaudanosoline synthase from Eschscholtzia tenuifolia cell cultures.
In: Planta Medica, Bd. 48: S. 212-220
[PDF, 2MB]
1981
Rüffer, Martina; El-Shagi, Hannemarie; Nagakura, Naotaka und Zenk, Meinhart H.
(1981):
(S)norlaudanosoline synthase. the first enzyme in the benzylisoquinoline biosynthetic pathway.
In: FEBS Letters, Bd. 129, Nr. 1: S. 5-9
[PDF, 631kB]
1979
Rüffer, Martina; Kan-Fan, Christiane; Husson, Henri-Phillipe; Stöckigt, Joachim und Zenk, Meinhart H.
(1979):
4,21-Dehydrogeissoschizine, an intermediate in heteroyohimbine alkaloid biosynthesis.
In: Journal of the Chemical Society, Chemical Communications: S. 1016-1018
[PDF, 204kB]
Nagakura, Naotaka; Rüffer, Martina und Zenk, Meinhart H.
(1979):
The biosynthesis of monoterpenoid indole alkaloids from strictosidine.
In: Journal of the Chemical Society, Perkin Transactions 1: S. 2308-2312
[PDF, 650kB]
1978
Rüffer, Martina; Nagakura, Naotaka und Zenk, Meinhart H.
(1978):
Strictosidine, the common precursor for monoterpenoid indole alkaloids with 3 α and 3 β configuration.
In: Tetrahedron Letters, Bd. 19, Nr. 18: S. 1593-1596
[PDF, 228kB]
Stöckigt, Joachim; Rüffer, Martina; Zenk, Meinhart H. und Hoyer, G. A.
(1978):
Indirect identification of 4,21-dehydrocorynenantheinaldehyde as an intermediate in the biosynthesis of ajmalicine and related alkaloids.
In: Planta Medica, Bd. 33: S. 188-192
[PDF, 713kB]