Evidence map›Paper›PMID 23510264›Full record

ArticleThe Journal of organic chemistry2013

Total synthesis of (+)-irciniastatin A (a.k.a. psymberin) and (-)-irciniastatin B.

Chihui An, Jon A Jurica, Shawn P Walsh, Adam T Hoye, Amos B Smith

Abstract read
In one paragraph

Article in The Journal of organic chemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing 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

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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

6 citing papers in PubMed.

  1. Article
  2. Review
  3. Review
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  6. 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

5 authors.

Chihui AnDepartment of Chemistry, Laboratory for Research on the Structure of Matter and Monell Chemical Senses Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States.
Jon A Jurica
Shawn P Walsh
Adam T Hoye
Amos B Smith

Funding

SYNTHESIS OF PHYLLANTHOSIDE RELATED ANTITUMOR AGENTSR01CA019033 · NCI · UNIVERSITY OF PENNSYLVANIA · PI SMITH, AMOS B · 1985 to 2024
$5.9M
NCI NIH HHS CA-19033NCI NIH HHS R01 CA019033
6 · The paper itself

Abstract

A unified synthetic strategy to access (+)-irciniastatin A (a.k.a. psymberin) and (-)-irciniastatin B, two cytotoxic secondary metabolites, has been achieved. Highlights of the convergent strategy comprise a boron-mediated aldol union to set the C(15)-C(17) syn-syn triad, reagent control to set the four stereocenters of the tetrahydropyran core, and a late-stage Curtius rearrangement to install the acid-sensitive stereogenic N,O-aminal. Having achieved the total synthesis of (+)-irciniastatin A, we devised an improved synthetic route to the tetrahydropyran core (13 steps) compared to the first-generation synthesis (22 steps). Construction of the structurally similar (-)-irciniastatin B was then achieved via modification of a late-stage (-)-irciniastatin A intermediate to implement a chemoselective deprotection/oxidation sequence to access the requisite oxidation state at C(11) of the tetrahydropyran core. Of particular significance, the unified strategy will permit late-stage diversification for analogue development, designed to explore the biological role of substitution at the C(11) position of these highly potent tumor cell growth inhibitory molecules.

Indexed as

Antineoplastic AgentsChemistry Techniques, SyntheticCoumarinsDrug DiscoveryMolecular StructureStereoisomerismAntineoplastic AgentsCoumarinsirciniastatin Bpsymberin

Identifiers

PMID23510264
PMCPMC3651581

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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.