SR Johns

1.8k total citations
95 papers, 1.1k citations indexed

About

SR Johns is a scholar working on Organic Chemistry, Biochemistry and Molecular Biology. According to data from OpenAlex, SR Johns has authored 95 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 40 papers in Organic Chemistry, 31 papers in Biochemistry and 28 papers in Molecular Biology. Recurrent topics in SR Johns's work include Traditional and Medicinal Uses of Annonaceae (29 papers), Chemical synthesis and alkaloids (21 papers) and Alkaloids: synthesis and pharmacology (13 papers). SR Johns is often cited by papers focused on Traditional and Medicinal Uses of Annonaceae (29 papers), Chemical synthesis and alkaloids (21 papers) and Alkaloids: synthesis and pharmacology (13 papers). SR Johns collaborates with scholars based in Australia, United States and Hong Kong. SR Johns's co-authors include JA Lamberton, AA Sioumis, RI Willing, NK Hart, H Suares, JL Occolowitz, David H. Solomon, Dsc Black, Thomas H. Spurling and Graeme Moad and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of the American Chemical Society and Australian Journal of Chemistry.

In The Last Decade

SR Johns

94 papers receiving 1.0k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
SR Johns Australia 19 540 420 234 233 185 95 1.1k
I. R. C. Bick Australia 16 400 0.7× 301 0.7× 173 0.7× 113 0.5× 212 1.1× 85 843
S. Yu. Yunusov Uzbekistan 9 406 0.8× 435 1.0× 104 0.4× 208 0.9× 364 2.0× 406 954
K. H. Overton United Kingdom 17 346 0.6× 619 1.5× 131 0.6× 218 0.9× 85 0.5× 98 1.1k
M. F. Grundon United Kingdom 19 708 1.3× 498 1.2× 109 0.5× 336 1.4× 85 0.5× 103 1.3k
Takeo Sakan Japan 19 441 0.8× 441 1.1× 82 0.4× 218 0.9× 81 0.4× 77 1.2k
B. S. Joshi India 22 608 1.1× 484 1.2× 119 0.5× 291 1.2× 202 1.1× 88 1.4k
F. Šantavý Czechia 15 370 0.7× 394 0.9× 92 0.4× 160 0.7× 193 1.0× 184 1.0k
Joju Haginiwa Japan 22 613 1.1× 683 1.6× 224 1.0× 275 1.2× 418 2.3× 124 1.5k
G. W. KIRBY United Kingdom 19 642 1.2× 392 0.9× 79 0.3× 163 0.7× 275 1.5× 71 1.3k
Satyesh C. Pakrashi India 21 435 0.8× 627 1.5× 111 0.5× 393 1.7× 311 1.7× 115 1.4k

Countries citing papers authored by SR Johns

Since Specialization
Citations

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

Fields of papers citing papers by SR Johns

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by SR Johns. 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 SR Johns. The network helps show where SR Johns may publish in the future.

Co-authorship network of co-authors of SR Johns

This figure shows the co-authorship network connecting the top 25 collaborators of SR Johns. A scholar is included among the top collaborators of SR Johns 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 SR Johns. SR Johns 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.
Johns, SR, et al.. (1976). The cyclopolymerization of N-Allyl-N-methyl(2-substituted allyl)amines. The structure of the polymers and low molecular weight products. Australian Journal of Chemistry. 29(9). 1955–1974. 15 indexed citations
2.
Johns, SR, et al.. (1975). Alkaloids of Ochrosia poweri bail. The stereochemistry of poweridine and the identity of elliptamine and reserpiline. Australian Journal of Chemistry. 28(7). 1627–1629. 7 indexed citations
3.
Johns, SR, JA Lamberton, AA Sioumis, & H Suares. (1974). The alkaloids of Poranthera corymbosa (Euphorbiaceae). Australian Journal of Chemistry. 27(9). 2025–2034. 9 indexed citations
4.
Hart, NK, SR Johns, JA Lamberton, & H Suares. (1972). Alkaloids of Pachygone pubescens (Menispermaceae). Australian Journal of Chemistry. 25(10). 2289–2290. 3 indexed citations
5.
Johns, SR, JA Lamberton, AA Sioumis, H Suares, & RI Willing. (1971). Elaeocarpus alkaloids. IV. The alkaloids of Elaeocarpus sphaericus. Australian Journal of Chemistry. 24(8). 1679–1694. 21 indexed citations
6.
Johns, SR, et al.. (1971). The reactions of 4-nitrophenylhydrazine and phenylhydrazine with formaldehyde. Australian Journal of Chemistry. 24(9). 1859–1871. 2 indexed citations
7.
Johns, SR, JA Lamberton, & AA Sioumis. (1970). Tropine 3,4,5-trimethoxycinnamate, a new alkaloid from Erythroxylum ellipticum (Erythroxylaceae). Australian Journal of Chemistry. 23(2). 421–422. 8 indexed citations
8.
Johns, SR, JA Lamberton, & JR Price. (1970). Isolation of isomultiflorenol, a possible triterpenoid artefact, from Pleiococca wilcoxiana (Rutaceae). Australian Journal of Chemistry. 23(6). 1283–1284. 1 indexed citations
9.
Hart, NK, SR Johns, JA Lamberton, & RI Willing. (1970). Alkaloids of Alchornea javanensis (Euphorbiaceae): The isolation of Hexahydroimidazo[1,2-a]pyrimidines and guanidines. Australian Journal of Chemistry. 23(8). 1679–1693. 15 indexed citations
10.
Culvenor, CCJ, SR Johns, JA Lamberton, & LW Smith. (1970). The isolation of calycanthine and pyrrolizidine alkaloids from Bhesa archboldiana (Celastraceae): An unusual co-occurrence of alkaloidal types. Australian Journal of Chemistry. 23(6). 1279–1282. 8 indexed citations
11.
Johns, SR, JA Lamberton, AA Sioumis, & H Suares. (1969). Alkaloids of Schelhammera pedunculata (Liliaceae). II. Reactions of schelhammeridine. Australian Journal of Chemistry. 22(10). 2203–2218. 14 indexed citations
12.
Johns, SR, JA Lamberton, & AA Sioumis. (1969). Alkaloids of Lycopodium volubile (Lycopodiaceae). Australian Journal of Chemistry. 22(6). 1317–1318. 3 indexed citations
13.
14.
Johns, SR & JA Lamberton. (1969). Isolation of simple acid amides from Allophylus cobbe (Sapindaceae), Homalium foetidum (Flacourtiaceae), and from an Aglaia species (Meliaceae). Australian Journal of Chemistry. 22(6). 1315–1316. 10 indexed citations
15.
Johns, SR, JA Lamberton, & AA Sioumis. (1968). Furoquinoline alkaloids from Evodia elleryana F. Muell. The structure of evellerine. Australian Journal of Chemistry. 21(7). 1897–1901. 8 indexed citations
16.
Hart, NK, SR Johns, & JA Lamberton. (1968). Minor alkaloids of Boehmeria platyphylla Don. (family Urticaceae). II. Isolation of cryptopleurine and a new seco-phenanthroquinolizidine alkaloid. Australian Journal of Chemistry. 21(10). 2579–2581. 24 indexed citations
17.
Johns, SR, et al.. (1968). Alkaloids of a Phaeanthus species from New Guinea. Isolation of phaeanthine and limacine. Australian Journal of Chemistry. 21(5). 1387–1388. 5 indexed citations
18.
Johns, SR, et al.. (1968). Alkaloids of Xylopia papuana Diels (family Annonaceae). Australian Journal of Chemistry. 21(5). 1383–1386. 13 indexed citations
19.
Hart, NK, SR Johns, & JA Lamberton. (1967). (+)-9-Aza-1-methylbicyclo[3,3 ,1]nonan-3-one, a new alkaloid from Euphorbia atoto Forst. Australian Journal of Chemistry. 20(3). 561–563. 31 indexed citations
20.
Johns, SR & JA Lamberton. (1966). Alkaloids of Evodia alata F. Muell. Australian Journal of Chemistry. 19(5). 895–896. 2 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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