Evidence map›Paper›PMID 26879056›Full record

ArticleThe Journal of organic chemistry2016

Design, Synthesis, and Evaluation of Irciniastatin Analogues: Simplification of the Tetrahydropyran Core and the C(11) Substituents.

Qi Liu, Chihui An, Karen TenDyke, Hongsheng Cheng, Young Yongchun Shen, Adam T Hoye, Amos B Smith

Open access · greenAbstract read
In one paragraph

Article in The Journal of organic chemistry, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.9field-weighted citation impact, top 27% 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

3 citing papers in PubMed, 12 citations in OpenAlex.

  1. Review
  2. Article
  3. Total Synthesis of (-)-Nahuoic Acid CJournal of the American Chemical Society · 2017
    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

7 authors at 3 institutions in 1 country.

Qi LiuDepartment of Chemistry, Laboratory for Research on the Structure of Matter and Monell Chemical Senses Center, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States.
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.
Karen TenDykeEisai Inc. , 4 Corporate Drive, Andover, Massachusetts 01810, United States.
Hongsheng ChengEisai Inc. , 4 Corporate Drive, Andover, Massachusetts 01810, United States.
Young Yongchun ShenEisai Inc. , 4 Corporate Drive, Andover, Massachusetts 01810, United States.
Adam T HoyeDepartment of Chemistry, Laboratory for Research on the Structure of Matter and Monell Chemical Senses Center, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States.
Amos B SmithDepartment of Chemistry, Laboratory for Research on the Structure of Matter and Monell Chemical Senses Center, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States.
Eisai (United States) · USUniversity of Pennsylvania · USMonell Chemical Senses Center · US

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

The design, synthesis, and biological evaluation of irciniastatin A (1) analogues, achieved by removal of three synthetically challenging structural units, as well as by functional group manipulation of the C(11) substituent of both irciniastatins A and B (1 and 2), has been achieved. To this end, we first designed a convergent synthetic route toward the diminutive analogue (+)-C(8)-desmethoxy-C(11)-deoxy-C(12)-didesmethylirciniastatin (6). Key transformations include an acid-catalyzed 6-exo-tet pyran cyclization, a chiral Lewis acid mediated aldol reaction, and a facile amide union. The absolute configuration of 6 was confirmed via spectroscopic analysis (CD spectrum, HSQC, COSY, and ROESY NMR experiments). Structure-activity relationship (SAR) studies of 6 demonstrate that the absence of the three native structural units permits access to analogues possessing cytotoxic activity in the nanomolar range. Second, manipulation of the C(11) position, employing late-stage synthetic intermediates from our irciniastatin syntheses, provides an additional five analogues (7-11). Biological evaluation of these analogues indicates a high functional group tolerance at position C(11).

Indexed as

Biological PhenomenaCatalysisCoumarinsMolecular StructurePyransStereoisomerismStructure-Activity RelationshipCoumarinsirciniastatin BpsymberinPyrans

Identifiers

PMID26879056
PMCPMC4782725
OpenAlexW2280357059

What OpenQuestion holds

Textmetadata
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.