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Hybrid Monoterpenoid Indole Alkaloids Obtained as Artifacts from Rauvolfia tetraphylla

2015· article· en· 11 citations· W2176572729 on OpenAlex· 10.1007/s13659-015-0074-2

Why is this work in the frame?

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

Canadian affiliationAn author listed a Canadian institution. This is the only route the usual frame has.

The three-model screen

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All three models called this out of scope.

stratum: aff_core · design weight: 5595.24 (the sample is stratified; any rate computed without the weight is wrong)
Claude Opus 4.8OUT
genre: empirical
about Canada: no
confidence: high

Natural products chemistry paper isolating indole alkaloid artifacts from Rauvolfia; the object is phytochemistry.

GPT-5.6 (high)OUT
genre: empirical
about Canada: no
confidence: high

The paper reports the isolation and evaluation of natural products from a plant genus.

Grok 4.5OUT
genre: empirical
about Canada: no
confidence: high

Natural-products chemistry of alkaloids from Rauvolfia.

Abstract

Rauvolfia genus of the Apocynaceae family, comprising about 60 species, is mainly distributed in America, Africa, Asia, and Oceania [ 1 ]. Plants of this genus are a rich source of monoterpenoid indole alkaloids, which have attracted great interests from biological and therapeutic aspects [ 2 – 5 ]. As part of a BioBioPha [ http://www.chemlib.cn ] objective to assemble a large-scale natural product library valuable in the discovery of new drug leads from nature, previous chemical study on the ethanolic extract of Rauvolfia tetraphylla had resulted in the isolation of five new indole alkaloids, rauvotetraphyllines A–E [ 6 ]. Further investigation of the remaining components led to the isolation of another five new alkaloids bearing an unusual 2,2-dimethyl-4-oxopiperidin-6-yl moiety, rauvotetraphyllines F–H ( 1 , 3 , 4 ), 17- epi -rauvotetraphylline F ( 2 ) and 21- epi -rauvotetraphylline H ( 5 ). The present paper describes the isolation, structure elucidation, and cytotoxic evaluation of the new compounds.

Stored with the screening record, where it is evidence for the labels above.

The record

Venue
Natural Products and Bioprospecting
Topic
Alkaloids: synthesis and pharmacology
Field
Pharmacology, Toxicology and Pharmaceutics
Canadian institutions
Francophone University Association
Funders
National Development and Reform Commission
Keywords
Indole testChemistryCytotoxicityIn vitroStereochemistryBiologyTraditional medicineBotanyBiochemistryMedicine
Has abstract in OpenAlex
yes