Anna C.U. Lourens

1.1k total citations
17 papers, 879 citations indexed

About

Anna C.U. Lourens is a scholar working on Organic Chemistry, Molecular Biology and Plant Science. According to data from OpenAlex, Anna C.U. Lourens has authored 17 papers receiving a total of 879 indexed citations (citations by other indexed papers that have themselves been cited), including 6 papers in Organic Chemistry, 6 papers in Molecular Biology and 6 papers in Plant Science. Recurrent topics in Anna C.U. Lourens's work include Ethnobotanical and Medicinal Plants Studies (3 papers), Parkinson's Disease Mechanisms and Treatments (3 papers) and Phytochemistry and Biological Activities (3 papers). Anna C.U. Lourens is often cited by papers focused on Ethnobotanical and Medicinal Plants Studies (3 papers), Parkinson's Disease Mechanisms and Treatments (3 papers) and Phytochemistry and Biological Activities (3 papers). Anna C.U. Lourens collaborates with scholars based in South Africa, Türkiye and Thailand. Anna C.U. Lourens's co-authors include Alvaro Viljoen, Fanie R. van Heerden, Sandy van Vuuren, Anél Petzer, Jacobus P. Petzer, K. Hüsnü Can Başer, Robyn L. van Zyl, Guy Kamatou, Hajierah Davids and Paul A. Steenkamp and has published in prestigious journals such as Journal of Ethnopharmacology, Tetrahedron Letters and European Journal of Medicinal Chemistry.

In The Last Decade

Anna C.U. Lourens

17 papers receiving 823 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Anna C.U. Lourens South Africa 13 398 318 251 187 156 17 879
Songül Karakaya Türkiye 16 387 1.0× 300 0.9× 183 0.7× 137 0.7× 188 1.2× 72 710
Cid Aimbiré de Moraes Santos Brazil 20 395 1.0× 202 0.6× 342 1.4× 131 0.7× 109 0.7× 65 961
Cláudia A. Simões‐Pires Switzerland 22 298 0.7× 157 0.5× 721 2.9× 246 1.3× 261 1.7× 47 1.4k
Marı́a Gabriela Ortega Argentina 20 220 0.6× 108 0.3× 323 1.3× 154 0.8× 298 1.9× 55 911
K. Hostettmann Switzerland 9 217 0.5× 102 0.3× 427 1.7× 163 0.9× 189 1.2× 10 782
Maria Eline Matheus Brazil 17 393 1.0× 249 0.8× 382 1.5× 179 1.0× 66 0.4× 27 1.0k
Aline Witaicenis Brazil 11 140 0.4× 112 0.4× 257 1.0× 158 0.8× 120 0.8× 14 689
C. Desmarchelier Argentina 16 333 0.8× 191 0.6× 307 1.2× 86 0.5× 62 0.4× 26 880
Zhuohong Xie United States 19 374 0.9× 261 0.8× 386 1.5× 41 0.2× 61 0.4× 36 1.0k
Hilal Özbek Türkiye 14 274 0.7× 206 0.6× 186 0.7× 86 0.5× 93 0.6× 52 572

Countries citing papers authored by Anna C.U. Lourens

Since Specialization
Citations

This map shows the geographic impact of Anna C.U. Lourens's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Anna C.U. Lourens with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Anna C.U. Lourens more than expected).

Fields of papers citing papers by Anna C.U. Lourens

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Anna C.U. Lourens. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Anna C.U. Lourens. The network helps show where Anna C.U. Lourens may publish in the future.

Co-authorship network of co-authors of Anna C.U. Lourens

This figure shows the co-authorship network connecting the top 25 collaborators of Anna C.U. Lourens. A scholar is included among the top collaborators of Anna C.U. Lourens based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Anna C.U. Lourens. Anna C.U. Lourens is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

17 of 17 papers shown
1.
Petzer, Jacobus P., et al.. (2020). Design, synthesis and evaluation of 3-hydroxypyridin-4-ones as inhibitors of catechol-O-methyltransferase. Molecular Diversity. 25(2). 753–762. 10 indexed citations
2.
Petzer, Jacobus P., et al.. (2019). Synthesis and evaluation of chromone derivatives as inhibitors of monoamine oxidase. Molecular Diversity. 23(4). 897–913. 25 indexed citations
3.
Petzer, Jacobus P., et al.. (2016). Carbamate substituted 2-amino-4,6-diphenylpyrimidines as adenosine receptor antagonists. Bioorganic & Medicinal Chemistry Letters. 26(3). 734–738. 11 indexed citations
4.
Lourens, Anna C.U., David Gravestock, Robyn L. van Zyl, et al.. (2016). Design, synthesis and biological evaluation of 6-aryl-1,6-dihydro-1,3,5-triazine-2,4-diamines as antiplasmodial antifolates. Organic & Biomolecular Chemistry. 14(33). 7899–7911. 12 indexed citations
5.
Petzer, Jacobus P., et al.. (2015). 2-Aminopyrimidines as dual adenosine A1/A2A antagonists. European Journal of Medicinal Chemistry. 104. 177–188. 22 indexed citations
6.
Petzer, Jacobus P., et al.. (2015). Monoamine oxidase inhibitory activities of heterocyclic chalcones. Bioorganic & Medicinal Chemistry Letters. 25(22). 5270–5276. 62 indexed citations
7.
Petzer, Jacobus P., et al.. (2013). Selected furanochalcones as inhibitors of monoamine oxidase. Bioorganic & Medicinal Chemistry Letters. 23(17). 4985–4989. 69 indexed citations
8.
Terre’Blanche, Gisella, et al.. (2013). The adenosine A2A antagonistic properties of selected C8-substituted xanthines. Bioorganic Chemistry. 49. 49–58. 25 indexed citations
9.
Terre’Blanche, Gisella, et al.. (2012). Sulfanylphthalonitrile analogues as selective and potent inhibitors of monoamine oxidase B. Bioorganic & Medicinal Chemistry Letters. 22(24). 7367–7370. 10 indexed citations
10.
11.
Gravestock, David, et al.. (2011). Expeditious synthesis and biological evaluation of novel 2,N6-disubstituted 1,2-dihydro-1,3,5-triazine-4,6-diamines as potential antimalarials. European Journal of Medicinal Chemistry. 46(6). 2022–2030. 25 indexed citations
12.
Lourens, Anna C.U., Sandy van Vuuren, Alvaro Viljoen, Hajierah Davids, & Fanie R. van Heerden. (2010). Antimicrobial activity and in vitro cytotoxicity of selected South African Helichrysum species. South African Journal of Botany. 77(1). 229–235. 40 indexed citations
13.
Lourens, Anna C.U., Alvaro Viljoen, & Fanie R. van Heerden. (2008). South African Helichrysum species: A review of the traditional uses, biological activity and phytochemistry. Journal of Ethnopharmacology. 119(3). 630–652. 125 indexed citations
14.
Kamatou, Guy, Robyn L. van Zyl, Hajierah Davids, et al.. (2007). Antimalarial and anticancer activities of selected South African Salvia species and isolated compounds from S. radula. South African Journal of Botany. 74(2). 238–243. 67 indexed citations
15.
Kamatou, Guy, Alvaro Viljoen, Robyn L. van Zyl, et al.. (2005). The in vitro pharmacological activities and a chemical investigation of three South African Salvia species. Journal of Ethnopharmacology. 102(3). 382–390. 147 indexed citations
16.
Lourens, Anna C.U., et al.. (2004). In vitro biological activity and essential oil composition of four indigenous South African Helichrysum species. Journal of Ethnopharmacology. 95(2-3). 253–258. 157 indexed citations
17.
Lourens, Anna C.U., et al.. (1994). Improved Method for DNA Extraction From Vitis vinifera. American Journal of Enology and Viticulture. 45(1). 102–106. 66 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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