Evidence map›Paper›PMID 40757759›Full record

ArticleJournal of the American Chemical Society2025

Total Synthesis of (-)-Neocucurbol C Enabled by Pattern Recognition and MHAT Cyclization.

Li-Ping Zhong, Cyrus Gudeman, Jingsong Zhen, Oshani A Wanasinghe, Jacob Hellmig, Michael J E Collins, John Bacsa, Alexander Adibekian, Mingji Dai

Abstract read
In one paragraph

Article in Journal of the American Chemical Society, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing 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

5 citing papers in PubMed.

  1. Total Synthesis of (±)-Stemocurtisine via Catalytic Carbonylation.Journal of the American Chemical Society · 2026
    Article
  2. Article
  3. Article
  4. Article
  5. Total Synthesis of (-)-Psathyrin A Enabled by Radical Cyclization.Journal of the American Chemical Society · 2025
    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

9 authors.

Li-Ping ZhongDepartment of Chemistry, Emory University, Atlanta, Georgia 30322, United States.
Cyrus GudemanDepartment of Chemistry, Emory University, Atlanta, Georgia 30322, United States.
Jingsong ZhenDepartment of Chemistry, Emory University, Atlanta, Georgia 30322, United States.
Oshani A WanasingheDepartment of Chemistry, University of Illinois Chicago, Chicago, Illinois 60607, United States.
Jacob HellmigDepartment of Chemistry, Emory University, Atlanta, Georgia 30322, United States.
Michael J E CollinsDepartment of Chemistry, Emory University, Atlanta, Georgia 30322, United States.
John BacsaDepartment of Chemistry, Emory University, Atlanta, Georgia 30322, United States.
Alexander AdibekianDepartment of Chemistry, University of Illinois Chicago, Chicago, Illinois 60607, United States.ORCID 0000-0001-6453-0244
Mingji DaiDepartment of Chemistry, Emory University, Atlanta, Georgia 30322, United States.ORCID 0000-0001-7956-6426

Funding

Synthesis and Study of Medicinally Important MoleculesR35GM128570 · NIGMS · PURDUE UNIVERSITY · PI Mingji Dai · 2018 to 2026
$3.7M
Probing conformational changes by protein surface azidationR01GM145886 · NIGMS · UNIVERSITY OF ILLINOIS AT CHICAGO · PI ADIBEKIAN, ALEXANDER · 2022 to 2025
$1.6M
Mapping Dynamic Changes in Protein Interactome using Proximity Labeling with High Temporal ResolutionR61CA297953 · NCI · UNIVERSITY OF ILLINOIS AT CHICAGO · PI Alexander Adibekian, ANDREI V KARGINOV · 2025 to 2026
$610k
NCI NIH HHS R61 CA297953NIGMS NIH HHS R01 GM145886NIGMS NIH HHS R35 GM128570
6 · The paper itself

Abstract

We report an asymmetric total synthesis of (-)-neocucurbol C, a diterpene natural product possessing a unique and complex 6/6/5/5/6 polycyclic skeleton and nine stereocenters. Pattern-recognition analysis led us to the chiral pool molecule (+)-nootkatone as the starting material, already containing the AB ring system and two key stereocenters encoded by the target molecule. The extra isopropenyl group of (+)-nootkatone was removed by Kwon's hydrodealkenylative bond fragmentation. Other key steps include a Suzuki-Miyaura cross coupling to introduce an aromatic ring as the E ring precursor, an oxidative dearomatization cyclization to form the key oxa-bridge, and a metal-catalyzed hydrogen atom transfer (MHAT)-initiated reductive radical cyclization to complete the entire framework for subsequent peripheral decorations, which eventually delivered (-)-neocucurbol C in 24 steps for the first time. In addition, the cytotoxicity evaluation of (-)-neocucurbol C and its synthetic intermediates against multiple cancer cell lines identified new lead compounds with promising anticancer activity for further development.

Indexed as

DiterpenesCatalysisCyclizationHumansMolecular StructureStereoisomerismDiterpenes

Identifiers

PMID40757759
PMCPMC12356577

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.