Ian D. Spenser

3.2k total citations
127 papers, 2.4k citations indexed

About

Ian D. Spenser is a scholar working on Molecular Biology, Ecology, Evolution, Behavior and Systematics and Organic Chemistry. According to data from OpenAlex, Ian D. Spenser has authored 127 papers receiving a total of 2.4k indexed citations (citations by other indexed papers that have themselves been cited), including 67 papers in Molecular Biology, 33 papers in Ecology, Evolution, Behavior and Systematics and 31 papers in Organic Chemistry. Recurrent topics in Ian D. Spenser's work include Botanical Research and Chemistry (32 papers), Enzyme Structure and Function (19 papers) and Metabolism and Genetic Disorders (18 papers). Ian D. Spenser is often cited by papers focused on Botanical Research and Chemistry (32 papers), Enzyme Structure and Function (19 papers) and Metabolism and Genetic Disorders (18 papers). Ian D. Spenser collaborates with scholars based in Canada, United States and Australia. Ian D. Spenser's co-authors include Robert E. Hill, Thomas Hemscheidt, Brian G. Sayer, Ram N. Gupta, Robert L. White, Rohit Gupta, R. A. Abramovitch, W. Marek Gołębiewski, Gunnar Grue‐Sørensen and Eckhard Leistner and has published in prestigious journals such as Nature, Science and Journal of the American Chemical Society.

In The Last Decade

Ian D. Spenser

126 papers receiving 2.2k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ian D. Spenser Canada 27 1.4k 646 469 432 425 127 2.4k
David B. Sprinson United States 30 1.8k 1.3× 280 0.4× 190 0.4× 315 0.7× 414 1.0× 71 2.3k
Masataka Moriyasu Japan 30 824 0.6× 612 0.9× 422 0.9× 124 0.3× 309 0.7× 117 2.4k
A. Ian Scott United States 26 1.2k 0.8× 745 1.2× 390 0.8× 170 0.4× 120 0.3× 134 2.1k
Feodor Lynen Germany 31 2.0k 1.4× 183 0.3× 330 0.7× 251 0.6× 548 1.3× 60 2.8k
Edward Leete United States 30 1.7k 1.2× 1.0k 1.6× 423 0.9× 87 0.2× 134 0.3× 181 3.1k
Masato Koreeda United States 34 1.7k 1.2× 1.9k 2.9× 248 0.5× 83 0.2× 249 0.6× 136 3.9k
D. H. R. Barton United Kingdom 35 1.7k 1.2× 1.7k 2.7× 576 1.2× 145 0.3× 192 0.5× 157 3.8k
Günther Snatzke Germany 31 1.8k 1.3× 1.8k 2.7× 483 1.0× 160 0.4× 233 0.5× 253 3.9k
R. J. Highet United States 27 774 0.6× 695 1.1× 255 0.5× 50 0.1× 279 0.7× 93 2.2k
Lothar Hennig Germany 24 766 0.5× 1.1k 1.6× 364 0.8× 190 0.4× 67 0.2× 179 2.2k

Countries citing papers authored by Ian D. Spenser

Since Specialization
Citations

This map shows the geographic impact of Ian D. Spenser'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 Ian D. Spenser with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ian D. Spenser more than expected).

Fields of papers citing papers by Ian D. Spenser

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ian D. Spenser. 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 Ian D. Spenser. The network helps show where Ian D. Spenser may publish in the future.

Co-authorship network of co-authors of Ian D. Spenser

This figure shows the co-authorship network connecting the top 25 collaborators of Ian D. Spenser. A scholar is included among the top collaborators of Ian D. Spenser 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 Ian D. Spenser. Ian D. Spenser is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Ullah, Nisar, et al.. (2004). 3-Amino-1-hydroxyacetone. Canadian Journal of Chemistry. 82(5). 579–582. 6 indexed citations
2.
Zeidler, Johannes, et al.. (2002). 2‘-Hydroxypyridoxol, a Biosynthetic Precursor of Vitamins B6 and B1 in Yeast. Journal of the American Chemical Society. 124(17). 4542–4543. 22 indexed citations
3.
Wolf, E. D. De, et al.. (1996). Deceptively Simple NMR Spectra of Contiguously 13C-enriched Compounds. Hrčak Portal of scientific journals of Croatia (University Computing Centre). 1 indexed citations
4.
Hill, Robert E., et al.. (1996). The Biogenetic Anatomy of Vitamin B6. Journal of Biological Chemistry. 271(48). 30426–30435. 105 indexed citations
5.
Spenser, Ian D., et al.. (1995). [2,3-13C2]-4-Hydroxy-L-threonine. The Journal of Organic Chemistry. 60(21). 6937–6940. 15 indexed citations
6.
Drewke, Christel, Ursula Hansen, Eckhard Leistner, et al.. (1993). Growth response to 4‐hydroxy‐l‐threonine of Escherichia coli mutants blocked in vitamin B6 biosynthesis. FEBS Letters. 318(2). 125–128. 36 indexed citations
7.
Hemscheidt, Thomas & Ian D. Spenser. (1993). Biosynthesis of lycopodine: incorporation of acetate via an intermediate with C2v symmetry. Journal of the American Chemical Society. 115(7). 3020–3021. 73 indexed citations
8.
Hemscheidt, Thomas & Ian D. Spenser. (1993). Biosynthesis of Anosmine: Incorporation of the Intact Six-Carbon Chain of Lysine and of Pipecolic Acid. Journal of Natural Products. 56(8). 1281–1287. 7 indexed citations
9.
Gołębiewski, W. Marek & Ian D. Spenser. (1985). Biosynthesis of the lupine alkaloids. I. Lupinine. Canadian Journal of Chemistry. 63(10). 2707–2718. 19 indexed citations
10.
Richards, James C. & Ian D. Spenser. (1983). 2H NMR spectroscopy as a probe of the stereochemistry of enzymic reactions at prochiral centres. Tetrahedron. 39(21). 3549–3568. 15 indexed citations
11.
Richards, James C. & Ian D. Spenser. (1982). The stereochemistry of the enzymic decarboxylation of L-arginine and of L-ornithine. Canadian Journal of Chemistry. 60(22). 2810–2820. 13 indexed citations
12.
Grue‐Sørensen, Gunnar & Ian D. Spenser. (1982). The biosynthesis of retronecine. Canadian Journal of Chemistry. 60(5). 643–662. 18 indexed citations
13.
Spenser, Ian D., et al.. (1981). Biosynthesis of retronecine. Journal of the American Chemical Society. 103(11). 3208–3210. 12 indexed citations
14.
White, Robert L. & Ian D. Spenser. (1979). Thiamin biosynthesis in Saccharomyces cerevisiae. Origin of carbon-2 of the thiazole moiety. Biochemical Journal. 179(2). 315–325. 28 indexed citations
15.
Gupta, Ram N., et al.. (1979). The biosynthesis of the Lythraceae alkaloids. I. The lysine-derived fragment. Canadian Journal of Chemistry. 57(13). 1606–1614. 6 indexed citations
16.
Gupta, Rohit & Ian D. Spenser. (1968). Biosynthesis of the piperidine alkaloids: origin of the piperidine nucleus of N-methylisopelletierine. Chemical Communications (London). 85–85. 3 indexed citations
17.
Gupta, Rohit & Ian D. Spenser. (1966). Biosynthesis of the piperidine alkaloids. The C6–C2units of sadamine and lobinaline. Chemical Communications (London). 0(24). 893–894. 1 indexed citations
18.
Spenser, Ian D., et al.. (1961). Biosynthesis of Hydrastine. Nature. 191(4796). 1393–1395. 11 indexed citations
19.
Spenser, Ian D.. (1956). 704. The structure of Nβ-alkyl-β-carboline anhydro-bases. Journal of the Chemical Society (Resumed). 0(0). 3659–3663. 19 indexed citations
20.
Leete, Edward, Léo Marion, & Ian D. Spenser. (1955). THE BIOGENESIS OF ALKALOIDS. Journal of Biological Chemistry. 214(1). 71–77. 14 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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