T. Trefor Howarth

639 total citations
24 papers, 413 citations indexed

About

T. Trefor Howarth is a scholar working on Organic Chemistry, Pharmacology and Molecular Biology. According to data from OpenAlex, T. Trefor Howarth has authored 24 papers receiving a total of 413 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Organic Chemistry, 7 papers in Pharmacology and 6 papers in Molecular Biology. Recurrent topics in T. Trefor Howarth's work include Synthesis of β-Lactam Compounds (7 papers), Microbial Natural Products and Biosynthesis (5 papers) and Cancer Treatment and Pharmacology (4 papers). T. Trefor Howarth is often cited by papers focused on Synthesis of β-Lactam Compounds (7 papers), Microbial Natural Products and Biosynthesis (5 papers) and Cancer Treatment and Pharmacology (4 papers). T. Trefor Howarth collaborates with scholars based in United Kingdom and United States. T. Trefor Howarth's co-authors include A. G. BROWN, Trevor J. King, David F. Corbett, Thomas M. Harris, Anthony H. Jackson, G. W. Kenner, Roger J. Ponsford, George Murphy, John S. Davies and Eric Hunt and has published in prestigious journals such as Journal of the American Chemical Society, Tetrahedron and Tetrahedron Letters.

In The Last Decade

T. Trefor Howarth

24 papers receiving 348 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
T. Trefor Howarth United Kingdom 11 226 189 135 90 34 24 413
Bill G. Jackson United States 9 251 1.1× 146 0.8× 193 1.4× 65 0.7× 17 0.5× 9 495
Padam N. Sharma United States 9 252 1.1× 177 0.9× 397 2.9× 108 1.2× 16 0.5× 16 636
Rudolf Lattrell Germany 11 493 2.2× 103 0.5× 193 1.4× 66 0.7× 14 0.4× 26 629
S. YOKOHAMA Japan 7 197 0.9× 128 0.7× 181 1.3× 54 0.6× 8 0.2× 13 409
Marco Alpegiani Italy 14 401 1.8× 79 0.4× 168 1.2× 35 0.4× 71 2.1× 57 595
Marland P. Hutt United States 11 340 1.5× 165 0.9× 338 2.5× 105 1.2× 14 0.4× 20 601
Hans Rudolf Pfaendler Germany 13 387 1.7× 98 0.5× 165 1.2× 63 0.7× 15 0.4× 44 608
Robert R. Chauvette United States 10 275 1.2× 129 0.7× 191 1.4× 47 0.5× 11 0.3× 12 451
Yasumichi Fukuda Japan 15 380 1.7× 129 0.7× 310 2.3× 86 1.0× 24 0.7× 28 649
J. Gosteli Switzerland 10 538 2.4× 142 0.8× 188 1.4× 60 0.7× 9 0.3× 13 668

Countries citing papers authored by T. Trefor Howarth

Since Specialization
Citations

This map shows the geographic impact of T. Trefor Howarth'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 T. Trefor Howarth with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites T. Trefor Howarth more than expected).

Fields of papers citing papers by T. Trefor Howarth

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by T. Trefor Howarth. 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 T. Trefor Howarth. The network helps show where T. Trefor Howarth may publish in the future.

Co-authorship network of co-authors of T. Trefor Howarth

This figure shows the co-authorship network connecting the top 25 collaborators of T. Trefor Howarth. A scholar is included among the top collaborators of T. Trefor Howarth 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 T. Trefor Howarth. T. Trefor Howarth 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.
Romani, R. K., P. L. Brink, B. Cabrera, et al.. (2017). Observation of electron-hole pair quantization in a high voltage cryogenic silicon detector with superconducting phonon sensor readout. arXiv (Cornell University). 3 indexed citations
2.
Gilpin, Martin L., et al.. (1987). Wittig reactions with β-lactam carbonyl functions. The effect of C-7 substitution on the chemistry of penicillins and clavulanic acid derivatives. Journal of the Chemical Society Perkin Transactions 1. 1369–1376. 4 indexed citations
3.
Brooks, Gerald, et al.. (1984). Nuclear modification of clavulanic acid. Preparation of optically active 1-oxaceph-3-ems. Journal of the Chemical Society Perkin Transactions 1. 1599–1599. 2 indexed citations
4.
5.
BROWN, A. G., et al.. (1983). Studies related to the structures of the olivanic acids MM 13902, MM 4550 and MM 17880. Tetrahedron. 39(15). 2551–2562. 3 indexed citations
6.
BROWN, A. G., T. Trefor Howarth, & Roger J. Ponsford. (1983). The chemistry of clavulanic acid: Some reactions of esters under neutral, acidic and basic conditions. Tetrahedron Letters. 24(26). 2693–2696. 4 indexed citations
7.
Brooks, Gerald, T. Trefor Howarth, & Eric Hunt. (1981). Synthesis of ethyl 3-methyl-7-oxo-4-oxo-4-oxa-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate and the reaction of 4-acetoxyazetidin-2-one with ethyl α-diazoacetoacetate. Journal of the Chemical Society Chemical Communications. 642–643. 12 indexed citations
8.
9.
BROWN, A. G., et al.. (1979). Structures of olivanic acid derivatives MM22380, MM22381, MM22382 and MM22383; Four new antibiotics isolated from Streptomyces olivaceus.. The Journal of Antibiotics. 32(9). 961–963. 30 indexed citations
10.
BROWN, A. G., David F. Corbett, & T. Trefor Howarth. (1977). Novel synthesis of the 7-oxo-4-oxa-1-azabicyclo[3.2.0]heptane ring system. Journal of the Chemical Society Chemical Communications. 359–359. 11 indexed citations
11.
Corbett, David F., et al.. (1977). Oxidation of clavulanic acid and a ready synthesis of the 7-oxo-4-oxa-1-azabicyclo[3.2.0]hept-2-ene ring system. Journal of the Chemical Society Chemical Communications. 808a–808a. 5 indexed citations
12.
BROWN, A. G., et al.. (1976). The formation and x-ray crystal structure analysis of isoclavulanic acid. Tetrahedron Letters. 17(46). 4203–4204. 5 indexed citations
13.
Howarth, T. Trefor, A. G. BROWN, & Trevor J. King. (1976). Clavulanic acid, a novel β-lactam isolated from Streptomyces clavuligerus; X-ray crystal structure analysis. Journal of the Chemical Society Chemical Communications. 266b–267. 122 indexed citations
14.
Howarth, T. Trefor, Anthony H. Jackson, & G. W. Kenner. (1974). Pyrroles and related compounds. Part XXVII. Syntheses of porphyrins with a nuclear carboxy-group. Journal of the Chemical Society Perkin Transactions 1. 4. 502–502. 7 indexed citations
15.
Howarth, T. Trefor, et al.. (1974). Pyrroles and related compounds. Part XXVI. Pyrrole β-keto-esters. Journal of the Chemical Society Perkin Transactions 1. 490–501. 4 indexed citations
16.
Howarth, T. Trefor, et al.. (1974). Pyrroles and related compounds. Part XXVIII. β-Keto-esters in the porphyrin series. Journal of the Chemical Society Perkin Transactions 1. 4(0). 512–516. 13 indexed citations
17.
Harris, Thomas M. & T. Trefor Howarth. (1971). Biogenetic-type synthesis of .beta.-resorcylic acids. Isolation and characterization of the aldol intermediate. Journal of the American Chemical Society. 93(10). 2506–2510. 8 indexed citations
18.
Howarth, T. Trefor, et al.. (1969). Formation of the isocyclic ring in chlorophyll. Journal of the American Chemical Society. 91(5). 1232–1233. 12 indexed citations
19.
Howarth, T. Trefor, George Murphy, & Thomas M. Harris. (1969). Preparation and biogenetic-type aromatizations of tetraacetic acid (3,5,7-trioxooctanoic acid). Journal of the American Chemical Society. 91(2). 517–518. 15 indexed citations
20.
Howarth, T. Trefor & Thomas M. Harris. (1968). Methyl 2-hydroxy-4-methoxy-6-phenylbenzoate and methyl 2-hydroxy-6-methoxy-4-phenylbenzoate: reassignment of a structure. Canadian Journal of Chemistry. 46(23). 3739–3742. 3 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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