Evidence map›Paper›PMID 31074980›Full record

ArticleJournal of the American Chemical Society2019

Calyciphylline B-Type Alkaloids: Total Syntheses of (-)-Daphlongamine H and (-)-Isodaphlongamine H.

Cedric L Hugelshofer, Vignesh Palani, Richmond Sarpong

Abstract read
In one paragraph

Article in Journal of the American Chemical Society, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

15 citing papers in PubMed.

  1. Article
  2. Skeletal Reorganization of Cycloalkylamines Into Angular Azatetracyclic Scaffolds.Angewandte Chemie (International ed. in English) · 2026
    Article
  3. Total Synthesis of Calyciphylline F.Angewandte Chemie (International ed. in English) · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. The Latest Progress in the Chemistry ofMolecules (Basel, Switzerland) · 2024
    Review
  9. Navigating Excess Complexity: Total Synthesis of Daphenylline.Journal of the American Chemical Society · 2024
    Article
  10. Article
  11. Article
  12. Metal-free C(spChemical science · 2021
    Article
  13. Article
  14. Article
  15. Pauson-Khand reaction of fluorinated compounds.Beilstein journal of organic chemistry · 2020
    Review
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

3 authors.

Cedric L HugelshoferDepartment of Chemistry , University of California , Berkeley , California 94720 , United States.
Vignesh PalaniDepartment of Chemistry , University of California , Berkeley , California 94720 , United States.
Richmond SarpongDepartment of Chemistry , University of California , Berkeley , California 94720 , United States.ORCID 0000-0002-0028-6323

Funding

Strategies and Methods for Complex Molecule Synthesis: Acquisition of a 400 MHz Nuclear Magnetic Resonance Spectrometer ConsoleR35GM130345 · NIGMS · UNIVERSITY OF CALIFORNIA BERKELEY · PI Richmond Sarpong · 2019 to 2026
$5.4M
NIGMS NIH HHS R35 GM130345
6 · The paper itself

Abstract

The first total synthesis of the complex hexacylic Daphniphyllum alkaloid (-)-daphlongamine H has been accomplished. Key to the success of the strategy are a complexity-building Mannich reaction, efficient cyclizations, and a highly diastereoselective hydrogenation to assemble multigram quantities of the tricyclic core bearing four contiguous stereocenters. Following construction of the hydro-indene substructure by means of a Pauson-Khand reaction, endgame redox manipulations delivered the natural product. Importantly, the synthetic studies have also given access to (-)-isodaphlongamine H and led to a revision of the reported structure of deoxyisocalyciphylline B.

Indexed as

AlkaloidsHeterocyclic Compounds, 4 or More RingsMolecular ConformationStereoisomerismAlkaloidsdaphlongamine Hdeoxyisocalyciphylline BHeterocyclic Compounds, 4 or More Ringsisodaphlongamine H

Identifiers

PMID31074980
PMCPMC6750003

What OpenQuestion holds

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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.