Results 111 to 120 of about 17,219 (233)

Anthocyanins and betalains in evolution: Why mutual exclusion remains the best‐supported model

open access: yesPlant Biology, Volume 28, Issue 6, Page 1763-1766, October 2026.
Anthocyanins and betalains are plant pigments produced through different biosynthetic pathways and are generally considered mutually exclusive. We examine claims of their co‐occurrence, arguing that methodological flaws and data misinterpretation have led to unsupported reports, and offer recommendations for more rigorous future research.
B. Pucker, M. I. Khan
wiley   +1 more source

HeLa cell toxicity to non-natural flavanones.

open access: yes, 2013
Relative cell viability for HeLa cells after 3 hour and 24 hour incubations in the presence of the natural flavanone naringenin and non-naturals 3-fluoro- (3F-), 4-chloro- (4Cl-), 4-fluoro- (4F-), and 4-fluoro-3-chloro- (4Cl-3Cl-) flavanones (FNN).
Karan Shah (341605)   +4 more
core   +1 more source

Optimum conditions for extracting flavanones from grapefruit peels and encapsulation of extracts

open access: yes, 2020
Encapsulation; Flavanones; Grapefruit peels; Naringin; Subcritical water ...
정명수
core   +1 more source

A Bio‐Based Chiroptical Overcrowded Alkene From Flavanone: Photoreactivity and Theoretical Investigation

open access: yesChemistry – A European Journal, Volume 32, Issue 34, 11 September 2026.
A sustainable route to photoresponsive molecular systems is achieved using the bio‐based flavanone (‐)‐isolonchocarpin from Tephrosia vogelii. Through McMurry homocoupling and light‐driven 6‐π‐electrocyclization, an overcrowded alkene and a fluorescent O‐heterocyclic phenanthrene are synthesized.
Deryl H. Limawan   +8 more
wiley   +1 more source

Asymmetric Hydrogenation by Relay Catalysis with FLPs and CPAs: Stereodivergent Synthesis of 3‑Substituted Flavanones

open access: yes
To access flavanones bearing two contiguous stereogenic centers, a metal-free asymmetric hydrogenation of racemic 3-alkylidene flavanones has been developed by relay catalysis with achiral FLPs and chiral phosphoric acids, which represents a successful ...
Jingjing Chen (293564)   +3 more
core   +1 more source

Cytotoxic Flavanones of Schizolaena hystrix from the Madagascar Rainforest

open access: yes, 2016
Bioassay-guided fractionation of an ethanol extract of a Madagascar collection of Schizolaena hystrix afforded three new flavanones, schizolaenone A (1), schizolaenone B (2), and 4‘-O-methylbonannione A (3), as well as three known flavanones, nymphaeol A,
Fidisoa Ratovoson (2457589)   +7 more
core   +1 more source

An Efficient Catalytic Synthesis of Flavanones under Green Conditions

open access: yes, 2011
An efficient and “green” catalytic conversion of 2'-hydroxychalcones to flavanones in 15 min in the presence of a simple amino acid and a base at room temperature is reported. Liquiritigenin was also efficiently synthesised under these conditions.
Xuxu Zheng   +3 more
core   +1 more source

Synthesis of trans-2,3-dimethoxy-3- (phenylamino)flavanones and related compounds

open access: yes, 1998
trans-2,3-Dimethoxy-3-(phenylamino)flavanones (2), a new type of flavanone derivatives, are synthesized from flavanones or 2'-hydroxychalcones in two steps, the first one being a condensation with nitrosobenzenes (Ehrlich-Sachs reaction) and the second ...
Surya K De   +2 more
core   +1 more source

Synthesis of Flavanones via Palladium(II)-Catalyzed One-Pot β‑Arylation of Chromanones with Arylboronic Acids

open access: yes, 2019
A total of 47 flavanones were expediently synthesized via one-pot β-arylation of chromanones, a class of simple ketones possessing chemically unactivated β sites, with arylboronic acids via tandem palladium­(II) catalysis.
Boyoung Y. Park (2065717)   +21 more
core   +1 more source

Pre- and Postharvest Melatonin Treatment: A Comparative Study of Lemon Cultivars on Melatonin and Flavanone Content During Cold Storage

open access: yesHorticulturae
Adverse environmental and postharvest conditions challenge the functional quality of lemons, an economically vital citrus crop. Melatonin (MEL) has emerged as an effective regulator of plant stress responses and secondary metabolism. This study evaluated
Fernando Garrido-Auñón   +4 more
doaj   +1 more source

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