Evidence map›Paper›PMID 35518432›Full record

ArticleRSC advances2020

Eight-step total synthesis of (+)-crambescin A.

Zhenhua Gao, Junchen Li, Yunyang Song, Xiaojing Bi, Xiangyan Meng, Yongbiao Guo

Abstract read
In one paragraph

Article in RSC advances, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Review
  2. 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

6 authors.

Zhenhua GaoState Key Laboratory of NBC Protection for Civilian Research Beijing 102205 P. R. China van87120@126.com.
Junchen LiState Key Laboratory of NBC Protection for Civilian Research Beijing 102205 P. R. China van87120@126.com.
Yunyang SongState Key Laboratory of NBC Protection for Civilian Research Beijing 102205 P. R. China van87120@126.com.
Xiaojing BiState Key Laboratory of NBC Protection for Civilian Research Beijing 102205 P. R. China van87120@126.com.
Xiangyan MengState Key Laboratory of NBC Protection for Civilian Research Beijing 102205 P. R. China van87120@126.com.
Yongbiao GuoState Key Laboratory of NBC Protection for Civilian Research Beijing 102205 P. R. China van87120@126.com.ORCID https://orcid.org/0000-0001-7284-6775

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

(+)-Crambescin A belongs to the polycyclic guanidine natural product family and has been shown to possess various medically important properties. The chiral bicyclic guanidine structure of (+)-crambescin A presents a challenge for chemical synthesis. Here we implement a novel asymmetric Biginelli reaction strategy to achieve the enantiospecific total synthesis of (+)-crambescin A in only 8 steps from the abundant and inexpensive aliphatic aldehyde, urea and methyl 3-oxobutanoate.

Identifiers

PMID35518432
PMCPMC9057376

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.