Results 131 to 140 of about 1,103 (171)

Anodic Fragmentation of Catharanthine and Coupling with Vindoline. Formation of Anhydrovinblastine

The Journal of Organic Chemistry, 1997
The anodic oxidation of catharanthine (Cath) in the presence of vindoline (Vind) performed in MeCN−Et4NClO4 at a controlled potential yields (16‘S)- and (16‘R)-anhydrovinblastine (AVBL) in s 4.3:1 ratio. The favorable stereoselectivity found at room temperature is rationalized by proposing the coupling of generated dication 1a++ and Vind at the ...
Ibro Tabakovic, Esmir Gunic, Ivan Juranic   +2 more
openaire   +1 more source

Ajmalicine, Serpentine, and Catharanthine Accumulation inCatharanthus roseusBioreactor Cultures

Planta Medica, 1987
A 141, stirred-tank bioreactor was used to investigate the effect of 7% glucose solutions on CATHARANTHUS ROSEUS suspension cultures. Measurement of oxygen uptake rate indicated that alkaloid accumulation occurred primarily during a 20-day transition period between growth-oriented metabolism and maintenance-oriented metabolism. Exposure of the cells to
D, Drapeau, H W, Blanch, C R, Wilke
openaire   +2 more sources

The chemistry of the Vinca alkaloids sitsirikine, catharanthine, and their derivatives

2011
In part I of this thesis are described the structural determinations of sitsirikine, dihydrositsirikine and isositsirikine, three new alkaloids from Vinca rosea Linn. Sitsirikine, C₂₁H₂₆O₃N₂, and dihydrositsirikine, C₂₁H₂₈ O₃N₂, were isolated as an inseparable mixture, which was shown by hydrogenation studies to be comprised of an olefin and its ...
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Formal Synthesis of (+)‐Catharanthine

Angewandte Chemie, 2006
Lionel, Moisan, Pierre, Thuéry, Marc, Nicolas, Eric, Doris, Bernard, Rousseau   +4 more
openaire   +2 more sources

Biosynthesis of catharanthine in engineered Pichia pastoris

Nature Synthesis, 2023
Jucan Gao, Yimeng Zuo, Feng Xiao, Yiling Wang, Dongfang Li, Junhao Xu, Cuifang Ye, Linjuan Feng, Leijie Jiang, Tengfei Liu, Di Gao, Bin Ma, Lei Huang, Zhinan Xu, Jiazhang Lian   +14 more
openaire   +1 more source

Syntheses of velbanamine and catharanthine

Journal of the American Chemical Society, 1970
G, Büchi, P, Kulsa, K, Ogasawara, R L, Rosati   +3 more
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Radioimmunoassay for the Quantitative Determination of Catharanthine

Planta Medica, 1987
B, Deus-Neumann, J, Stöckigt, M H, Zenk
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Total synthesis of (.+-.)-catharanthine

The Journal of Organic Chemistry, 1985
Stanley Raucher, Brian L. Bray
openaire   +1 more source

ChemInform Abstract: REARRANGEMENT OF THE CATHARANTHINE SKELETON. II. PREPARATION OF CATHARANTHINE E LACTONE

Chemischer Informationsdienst, 1978
P. MANGENEY, Y. LANGLOIS
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Synthesis of (.+-.)-catharanthine, (+)-anhydrovinblastine, and (-)-anhydrovincovaline

Journal of the American Chemical Society, 1987
Stanley Raucher, Brian L. Bray, Ross F. Lawrence   +2 more
openaire   +1 more source