Evidence map›Paper›PMID 23209870›Full record

ArticleChemical science2013

Precursor-Directed Generation of Amidine Containing Ammosamide Analogs: Ammosamides E-P.

Ende Pan, Nathaniel W Oswald, Aaron G Legako, Janie M Life, Bruce A Posner, John B Macmillan

Abstract read
In one paragraph

Article in Chemical science, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed.

  1. Actinomycetes: A Source of Anticancer Metabolites.Current medicinal chemistry · 2025
    Review
  2. Article
  3. Naturally Occurring Organohalogen Compounds-A Comprehensive Review.Progress in the chemistry of organic natural products · 2023
    Review
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  5. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Ende PanDepartment of Biochemistry, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX, USA.
Nathaniel W Oswald
Aaron G Legako
Janie M Life
Bruce A Posner
John B Macmillan

Funding

UT Southwestern Medical Center Simmons Comprehensive Cancer CenterP30CA142543 · NCI · UT SOUTHWESTERN MEDICAL CENTER · PI Sandi Leigh Pruitt · 2010 to 2026
$53.7M
Structure guided discovery of small molecule antagonists of Smac (DIABLO)/XIPAP01CA095471 · NCI · UT SOUTHWESTERN MEDICAL CENTER · PI DE BRABANDER, JEF KAREL · 2002 to 2011
$34.1M
Marine Actinomycetes as a Resource for Anticancer Natural ProductsR01CA149833 · NCI · UT SOUTHWESTERN MEDICAL CENTER · PI MACMILLAN, JOHN B · 2010 to 2014
$1.6M
NCI NIH HHS P01 CA095471NCI NIH HHS P30 CA142543NCI NIH HHS R01 CA149833
6 · The paper itself

Abstract

Ammosamides E-F (1-2), are amidine analogs of the ammosamide family of alkaloids isolated from a marine-derived Streptomyces variabilis. Further studies with S. variabilis revealed a variety of aryl and alkyl amines added into the fermentation media could be efficiently incorporated into the ammosamide framework to generate a library of precursor-directed amidine analogs, ammosamides G-P (9 - 18). We demonstrate that the amines are introduced via non-enzymatic addition to the iminium ion of ammosamide C. Biological evaluation of the amidine analogs against quinone reductase 2 (QR2) showed low nM potency for a number of analogs. When tested for in vivo activity against a panel of non-small cell lung cancer (NSCLC) cell-lines there was a clear increase in potency by incorporation of lipophilic alkylamines, with the most potent compounds having sub μM IC(50) values (0.4 to 0.8 μM).

Identifiers

PMID23209870
PMCPMC3510655

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.