Roger J. Ponsford

675 total citations
28 papers, 464 citations indexed

About

Roger J. Ponsford is a scholar working on Organic Chemistry, Molecular Biology and Pharmacology. According to data from OpenAlex, Roger J. Ponsford has authored 28 papers receiving a total of 464 indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Organic Chemistry, 11 papers in Molecular Biology and 11 papers in Pharmacology. Recurrent topics in Roger J. Ponsford's work include Synthesis of β-Lactam Compounds (8 papers), Chemical Synthesis and Analysis (4 papers) and Synthesis and biological activity (4 papers). Roger J. Ponsford is often cited by papers focused on Synthesis of β-Lactam Compounds (8 papers), Chemical Synthesis and Analysis (4 papers) and Synthesis and biological activity (4 papers). Roger J. Ponsford collaborates with scholars based in United States, United Kingdom and Israel. Roger J. Ponsford's co-authors include P. H. BENTLEY, Leslie Crombie, Robert Southgate, MICHAEL J. BASKER, Raphael Mechoulam, Arnon Shani, Peter H. Milner, T. C. SMALE, B Slocombe and A. G. BROWN and has published in prestigious journals such as Journal of Medicinal Chemistry, Antimicrobial Agents and Chemotherapy and Journal of Antimicrobial Chemotherapy.

In The Last Decade

Roger J. Ponsford

28 papers receiving 401 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Roger J. Ponsford United States 11 279 171 144 58 56 28 464
Norio Ezaki United Kingdom 15 218 0.8× 247 1.4× 212 1.5× 37 0.6× 53 0.9× 25 503
Martin L. Gilpin United States 12 191 0.7× 176 1.0× 191 1.3× 83 1.4× 44 0.8× 29 462
J. Philip Poyser United Kingdom 12 194 0.7× 156 0.9× 258 1.8× 35 0.6× 65 1.2× 22 522
Kazuhiko Kintaka Japan 8 240 0.9× 201 1.2× 193 1.3× 117 2.0× 32 0.6× 10 502
Edward A. Kaczka United States 12 286 1.0× 237 1.4× 314 2.2× 63 1.1× 67 1.2× 16 699
Ramesh M. Kanojia United States 13 348 1.2× 102 0.6× 195 1.4× 20 0.3× 27 0.5× 26 572
John P. Dirlam United States 13 278 1.0× 108 0.6× 143 1.0× 20 0.3× 19 0.3× 40 449
J. A. Mabe United States 13 140 0.5× 204 1.2× 300 2.1× 31 0.5× 93 1.7× 25 534
NOZOMI KATAYAMA Japan 13 189 0.7× 191 1.1× 323 2.2× 80 1.4× 36 0.6× 21 557
Ronald R. Rasmussen United Kingdom 13 259 0.9× 185 1.1× 238 1.7× 16 0.3× 30 0.5× 21 488

Countries citing papers authored by Roger J. Ponsford

Since Specialization
Citations

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

Fields of papers citing papers by Roger J. Ponsford

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Roger J. Ponsford. 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 Roger J. Ponsford. The network helps show where Roger J. Ponsford may publish in the future.

Co-authorship network of co-authors of Roger J. Ponsford

This figure shows the co-authorship network connecting the top 25 collaborators of Roger J. Ponsford. A scholar is included among the top collaborators of Roger J. Ponsford 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 Roger J. Ponsford. Roger J. Ponsford 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.
Brown, Pamela, et al.. (1991). β-Lactamase-stable penicillins. Synthesis and structure–activity relationships of (Z)-alkyloxyimino penicillins; selection of BRL 44154. Journal of the Chemical Society Perkin Transactions 1. 881–891. 10 indexed citations
2.
Branch, Clive L., Stuart C. Finch, Arun C. Kaura, et al.. (1987). Preparation and properties of 7 alpha formamidocephalosporins. 1. 45–56. 26 indexed citations
3.
Branch, Clive L., Arun C. Kaura, Peter H. Milner, et al.. (1987). Preparation and properties of 7α-formamido cephalosporins. Journal of the Chemical Society Perkin Transactions 1. 45–55. 9 indexed citations
4.
BASKER, MICHAEL J., D. J. Merrikin, Roger J. Ponsford, B Slocombe, & Tim Tasker. (1986). BRL 20330, an oral prodrug of temocillin: bioavailability studies in man. Journal of Antimicrobial Chemotherapy. 18(3). 399–405. 3 indexed citations
5.
BASKER, MICHAEL J., Clive L. Branch, Peter H. Milner, et al.. (1986). Studies on semi-synthetic 7.ALPHA.-formamidocephalosporins. I Structure-activity relationships in some semi-synthetic 7.ALPHA.-formamidocephalosporins.. The Journal of Antibiotics. 39(12). 1788–1791. 9 indexed citations
6.
Harrington, Frank P., Peter H. Milner, Roger J. Ponsford, et al.. (1986). Structure-activity relationships of some 6.ALPHA.-formamido penicillins.. The Journal of Antibiotics. 39(10). 1498–1501. 9 indexed citations
7.
Milner, Peter H., et al.. (1984). 6α(7α)-Formamido penicillins and cephalosporins. Journal of the Chemical Society Chemical Communications. 1335–1336. 12 indexed citations
8.
9.
Knight, Derek J. & Roger J. Ponsford. (1982). Trypanocidal activity and prophylaxis evaluation of a series of bis-oxydihydrotriazines in mice. Annals of Tropical Medicine and Parasitology. 76(6). 589–594. 1 indexed citations
10.
BASKER, MICHAEL J., John H. Bateson, Andrew Baxter, et al.. (1981). Synthesis of 6-unsubstituted olivanic acid analogues and their antibacterial activities.. The Journal of Antibiotics. 34(9). 1224–1226. 6 indexed citations
11.
Ponsford, Roger J.. (1980). Copper (II) catalysed decomposition of penicillin - derived diazoketones: formation of a novel fused β-lactam. Tetrahedron Letters. 21(25). 2451–2452. 10 indexed citations
12.
Baxter, Andrew, Roger J. Ponsford, & Robert Southgate. (1980). Synthesis of olivanic acid analogues. Preparation of 7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylates containing the 3-(2-acetamidoethenylthio) side chain. Journal of the Chemical Society Chemical Communications. 429–429. 9 indexed citations
13.
Baxter, Andrew, Pamela B. Davis, Roger J. Ponsford, & Robert Southgate. (1980). Synthesis of olivanic acid analogues: a facile route to 3-(2-pyrimidinylthio-) substituted derivatives. Tetrahedron Letters. 21(52). 5071–5074. 8 indexed citations
14.
Ponsford, Roger J., et al.. (1979). Intramolecular Wittig reactions with thioesters: the synthesis of 7-oxo-3-phenylthio-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylates. Journal of the Chemical Society Chemical Communications. 847–847. 16 indexed citations
15.
Ponsford, Roger J. & Robert Southgate. (1979). Preparation of 8-oxo-7-(1-hydroxyethyl)-3-oxa-1-azabicyclo[4.2.0]octane derivatives: intermediates for thienamycin synthesis. Journal of the Chemical Society Chemical Communications. 846–846. 21 indexed citations
16.
Nayler, J. H. C., et al.. (1977). Antibacterial halogenoacetyl derivatives of amino acids and simple peptides. Journal of Medicinal Chemistry. 20(11). 1445–1448. 10 indexed citations
17.
18.
Crombie, Leslie & Roger J. Ponsford. (1971). Pyridine-catalysed condensation of citral with phloroglucinols, a novel reaction leading to tetracyclic bis-ethers and chromenes. Two-step synthesis of (±)-deoxybruceol. Journal of the Chemical Society C Organic. 0(0). 788–795. 12 indexed citations
19.
Crombie, L. & Roger J. Ponsford. (1968). Synthesis of hashish cannabinoids by terpenic cyclisation. Chemical Communications (London). 894–894. 8 indexed citations
20.
Crombie, Leslie, et al.. (1968). Hashish components. Photochemical production of cannabicyclol from cannabichromene. Tetrahedron Letters. 9(55). 5771–5772. 50 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Norio Ezaki Breakdown of academic impact, for papers by Martin L. Gilpin Breakdown of academic impact, for papers by J. Philip Poyser Breakdown of academic impact, for papers by Kazuhiko Kintaka Breakdown of academic impact, for papers by Edward A. Kaczka Breakdown of academic impact, for papers by Ramesh M. Kanojia Breakdown of academic impact, for papers by John P. Dirlam Breakdown of academic impact, for papers by J. A. Mabe Breakdown of academic impact, for papers by NOZOMI KATAYAMA Breakdown of academic impact, for papers by Ronald R. Rasmussen
Rankless by CCL
2026