Evidence map›Paper›PMID 27007853›Full record

ArticleNature2016

Nineteen-step total synthesis of (+)-phorbol.

Shuhei Kawamura, Hang Chu, Jakob Felding, Phil S Baran

Open access · greenAbstract read
In one paragraph

Article in Nature, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed
15.3field-weighted citation impact, top 1% of its field
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

60 citing papers in PubMed, 241 citations in OpenAlex.

  1. Review
  2. Article
  3. Evolution of a Synthetic Strategy for Complex Diterpenes fromJournal of the American Chemical Society · 2026
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  5. Review
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  7. Article
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  9. Article
  10. Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. JACS Au · 2024
    Article
  16. Tigliane Diterpenoids.Progress in the chemistry of organic natural products · 2024
    Review
  17. Total Synthesis of (+)-Euphorikanin A via an Atropospecific Cascade.Journal of the American Chemical Society · 2023
    Article
  18. EngineeringmLife · 2023
    Article
  19. Radical and Cationic Pathways in C(Journal of the American Chemical Society · 2023
    Article
  20. Article
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

4 authors at 2 institutions in 2 countries.

Shuhei KawamuraDepartment of Chemistry, The Scripps Research Institute, La Jolla, California 92037, USA.
Hang ChuDepartment of Chemistry, The Scripps Research Institute, La Jolla, California 92037, USA.
Jakob FeldingFront End Innovation, LEO Pharma A/S Industriparken 55, 2750 Ballerup, Denmark.
Phil S BaranDepartment of Chemistry, The Scripps Research Institute, La Jolla, California 92037, USA.
Scripps Research Institute · USLeo Pharma (Denmark) · DK

Funding

Scalable Synthesis and New Bond DisconnectionsR35GM118176 · NIGMS · SCRIPPS RESEARCH INSTITUTE, THE · PI BARAN, PHIL S · 2016 to 2025
$11.5M
Synthesis of Complex TerpenesR01GM097444 · NIGMS · SCRIPPS RESEARCH INSTITUTE, THE · PI BARAN, PHIL S · 2011 to 2014
$1.4M
NIGMS NIH HHS GM-097444NIGMS NIH HHS R01 GM097444NIGMS NIH HHS R35 GM118176
6 · The paper itself

Abstract

Phorbol, the flagship member of the tigliane diterpene family, has been known for over 80 years and has attracted attention from many chemists and biologists owing to its intriguing chemical structure and the medicinal potential of phorbol esters. Access to useful quantities of phorbol and related analogues has relied on isolation from natural sources and semisynthesis. Despite efforts spanning 40 years, chemical synthesis has been unable to compete with these strategies, owing to its complexity and unusual placement of oxygen atoms. Purely synthetic enantiopure phorbol has remained elusive, and biological synthesis has not led to even the simplest members of this terpene family. Recently, the chemical syntheses of eudesmanes, germacrenes, taxanes and ingenanes have all benefited from a strategy inspired by the logic of two-phase terpene biosynthesis in which powerful C-C bond constructions and C-H bond oxidations go hand in hand. Here we implement a two-phase terpene synthesis strategy to achieve enantiospecific total synthesis of (+)-phorbol in only 19 steps from the abundant monoterpene (+)-3-carene. The purpose of this synthesis route is not to displace isolation or semisynthesis as a means of generating the natural product per se, but rather to enable access to analogues containing unique placements of oxygen atoms that are otherwise inaccessible.

Indexed as

Chemistry Techniques, SyntheticBicyclic MonoterpenesBiological ProductsDiterpenesMolecular StructureMonoterpenesOxygenPhorbol EstersPhorbolsStereoisomerism3-careneBicyclic MonoterpenesBiological ProductsDiterpenesingenaneMonoterpenesOxygenphorbolPhorbol EstersPhorbols

Identifiers

PMID27007853
PMCPMC4833603
OpenAlexW2307703164

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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.