Results 211 to 220 of about 225,386 (346)

Ueber des phenolische Alkaloid von Cocculus trilobus, DC. (II). Konstitution des Trilobamins

, 1935
Masao Tomita, Heisaburo Kondo
openalex   +2 more sources

Divergent Total Syntheses of 7,20‐Epoxy, 3,20‐Epoxy and 6,7‐seco‐ent‐Kaurane Diterpenoids

European Journal of Organic Chemistry, Accepted Article.
The genus Isodon is a well‐known traditional medicinal herb that serves as a rich source of cytotoxic ent‐kaurane diterpenoids, which bear the same tetracyclic core of ent‐kaurane with different oxygenation, bond‐cleavage and rearrangement patterns.
Bo Wang, Wenjing Ma, Andrew-Go Zhuang, Han Luo, Lizhi Zhu, Wei Han, Chi-Sing Lee   +6 more
wiley   +1 more source

A highly specific O-methyltransferase for nororientaline synthesis isolated from Argemone platyceras cell cultures [PDF]

, 1983
Nagakura, Naotaka, Rüffer, Martina, Zenk, Meinhart H.   +2 more
core   +1 more source

Studies on the Alkaloids of Menispermaceous Plants. CLX

, 1958
Yoshio Sasaki, Shinichi Ueda
openalex   +2 more sources

THE BIOGENESIS OF ALKALOIDS: VIII. THE ROLE OF METHIONINE IN THE FORMATION OF THE N-METHYL GROUPS OF THE ALKALOID HORDENINE [PDF]

, 1953
T. J. Matchett, Léo Marion, S. Kirkwood
openalex   +1 more source

Enantioselective Anion‐Binding‐Catalyzed Nucleophilic Addition to 4‐Quinolones

European Journal of Organic Chemistry, EarlyView.
The first organocatalytic enantioselective formal 1,4‐addition to 4‐quinolones has been developed. This method relies on chiral triazole‐based anion‐binding catalysis using enol nucleophiles, complementing previous metal catalytic approaches. Moderate to good yields and enantioselectivities were achieved by in situ silylation and formation of a key ...
Martin Aleksiev, Gaukhar Khassenova, Olga García Mancheño   +2 more
wiley   +1 more source

Anti-proliferative and photodynamic activities of Senna didymobotrya (Fresen.) leaf alkaloid-rich extracts against breast cancer cells. [PDF]

BMC Complement Med Ther
Olofinsan KA, Abrahamse H, George BP.
europepmc   +1 more source

THE BIOGENESIS OF ALKALOIDS: III. A STUDY OF HYOSCYAMINE BIOSYNTHESIS USING ISOTOPIC PUTRESCINE [PDF]

, 1951
D. G. M. Diaper, S. Kirkwood, Léo Marion   +2 more
openalex   +1 more source

Interpretation of in vitro concentration‐response data for risk assessment and regulatory decision‐making: Report from the 2022 IWGT quantitative analysis expert working group meeting

Environmental and Molecular Mutagenesis, EarlyView.
Abstract Quantitative risk assessments of chemicals are routinely performed using in vivo data from rodents; however, there is growing recognition that non‐animal approaches can be human‐relevant alternatives. There is an urgent need to build confidence in non‐animal alternatives given the international support to reduce the use of animals in toxicity ...
Marc A. Beal, Guangchao Chen, Kerry L. Dearfield, Min Gi, Bhaskar Gollapudi, Robert H. Heflich, Katsuyoshi Horibata, Alexandra S. Long, David P. Lovell, Barbara L. Parsons, Stefan Pfuhler, John Wills, Andreas Zeller, George Johnson, Paul A. White   +14 more
wiley   +1 more source

Purification and Oxidative Scavenging of Total Alkaloids of <i>Piperis longi fructus</i> Based on Adsorption Kinetics and Thermodynamic Theory. [PDF]

Molecules
Lu L, Shi D, Chen N, Wu C, Zhang H, Zhong S, Ji J, Zheng Y, Cheng J, Huang S, Liu T.   +10 more
europepmc   +1 more source