PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

Synthesis of peripherally annulated phenanthroporphyrins

A new approach for peripheral annelation of porphyrinoid

Synthesis of peripherally annulated phenanthroporphyrins
2023-06-27
(Press-News.org)

Prof. Okujima, in collaboration with Prof. Kobayashi at Shinshu University, reported the synthesis, molecular structure, optical properties and electronic structure of unusual phenanthrene-fused porphyrins.

Precursor porphyrins fused with aryl-substituted bicyclo[2.2.2]octadiene afforded the corresponding arylbenzoporphyrins (arylBPs) by retro Diels–Alder reaction. Unusual phenanthroporphyrins were obtained via the intramolecular Scholl reaction of arylBPs. We analyzed the optical and electronic structures using magnetic circular dichroism spectroscopy and time-dependent density functional theory calculations.

Our findings were published on April 25, 2023 in Organic Letters.

END


[Attachments] See images for this press release:
Synthesis of peripherally annulated phenanthroporphyrins Synthesis of peripherally annulated phenanthroporphyrins 2

ELSE PRESS RELEASES FROM THIS DATE:

Recent progress of Ni-based catalysts for methanol electrooxidation reaction in alkaline media

Recent progress of Ni-based catalysts for methanol electrooxidation reaction in alkaline media
2023-06-27
The study is led by Ligang Feng (School of Chemistry and Chemical Engineering, Yangzhou University).   The rapid development of the economy driven by the large consummation of traditional fossil fuels is not sustainable, and global attention is shifted to the utilization of renewable energy sources, and biomass fuels. Methanol is considered a good biomass fuel to realize energy storage and conversion, which is convenient for storage and transportation; more importantly, it is much safer than other fuels such as gasoline, diesel, and natural gas. In addition, it can be prepared with wide sources in low-cost and ...

Move over diamond. hBN is quantum’s new best friend.

Move over diamond. hBN is quantum’s new best friend.
2023-06-27
Diamond has long been the go-to material for quantum sensing due to its coherent nitrogen-vacancy centres, controllable spin, sensitivity to magnetic fields, and ability to be used at room temperature. With such a suitable material so easy to fabricate and scale, there’s been little interest in exploring diamond alternatives. But this GOAT of the quantum world has one Achilles Heel… It’s too big. Just as an NFL linebacker is not the best sportsperson to ride in the Kentucky Derby, diamond is not an ideal material when exploring quantum sensors and information processing. ...

Personalized dosing in prostate cancer treatment improves patient outcomes

Personalized dosing in prostate cancer treatment improves patient outcomes
2023-06-27
Chicago, Illinois (Embargoed until 3:45 p.m. CDT, Tuesday, June 27, 2023)—By monitoring early-response biomarkers in men undergoing 177Lu-PSMA prostate cancer treatment, physicians can personalize dosing intervals, significantly improving patient outcomes. In a study presented at the Society of Nuclear Medicine and Molecular Imaging 2023 Annual Meeting, early stratification with 177Lu-SPECT/CT allowed men responding to treatment to take a “treatment holiday” and allowed those not responding the option to switch to another treatment.  Approved by the U.S. Food ...

Genomics- and image-guided subtyping refines characterization of Alzheimer’s disease

Genomics- and image-guided subtyping refines characterization of Alzheimer’s disease
2023-06-27
Chicago, Illinois (Embargoed until 4:05 p.m. CDT, Tuesday, June 27, 2023)—A new computational technique that combines genomic and tau PET imaging data promises a more personalized approach for subtyping Alzheimer’s disease. Based on a novel clustering framework using sparse canonical correlation analysis (SCCA), the integrated approach was successful in identifying four subtypes of Alzheimer’s disease and the top genes associated with each. This research was presented at the 2023 Society of Nuclear Medicine and Molecular Imaging Annual ...

A jaw-dropping conundrum: Why do mammals have a stiff lower jaw?

A jaw-dropping conundrum: Why do mammals have a stiff lower jaw?
2023-06-27
From the 20-foot-long jawbones of the filter-feeding blue whale to the short, but bone-crushing, jaws of the hyena and the delicate chin bones of a human, the pair of lower jawbones characteristic of mammals have evolved with amazing variation. But at first glance, having a single bone on each side of the head — which creates a stiff lower jaw, or mandible — doesn't appear to give mammals an advantage over other vertebrates, which have at least two and as many as 11 bones comprising each side of the lower jaw. Crocodiles, for example, have an edge over hyenas when it comes to their bite strength relative to ...

New research by Sylvester Cancer shows unmet support needs can lead to worse clinical outcomes

New research by Sylvester Cancer shows unmet support needs can lead to worse clinical outcomes
2023-06-27
MIAMI, FLORIDA (June 27, 2023) – Cancer patients with unmet supportive care needs are more likely to experience worse clinical outcomes, including more emergency department (ED) visits and hospitalizations, according to new research from Sylvester Comprehensive Cancer Center at the University of Miami Miller School of Medicine. The study, published June 21 in JAMA Network Open, also found that Black race, Hispanic ethnicity and factors such as anxiety, depression, pain, poor physical function and low health-related quality-of-life ...

Higher doses of oral semaglutide improves blood sugar control and weight loss

Higher doses of oral semaglutide improves blood sugar control and weight loss
2023-06-27
CHAPEL HILL, N.C. – Diabetes is a progressive disease that affects one’s ability to control blood sugar levels. For many patients, the condition becomes more severe over time and blood sugar levels grow more difficult to manage. Glucagon-like peptide-1 (GLP-1) receptor agonists, such as semaglutide, have granted patients more control in lowering of blood sugar. John Buse, MD, PhD, the Verne S. Caviness Distinguished Professor of Medicine in the Division of Endocrinology and Metabolism, and an international team of researchers have presented new findings about new higher-dose formulations ...

Age of those with mismatched biological sex and gender identity (gender dysphoria) is falling

2023-06-27
The age of those who are distressed because of a mismatch between their biological sex and their gender identity—known as gender dysphoria—has been steadily falling, reveals research published in the open access journal General Psychiatry. And it’s lower for those assigned female sex at birth than those assigned male, the findings indicate. Recent studies suggest that gender dysphoria is becoming more common, particularly among those assigned female sex at birth. But these studies have been hampered by small sample sizes, short monitoring periods, or outdated datasets.  In a bid to get round these limitations, the researchers drew on data submitted ...

Mediation’s role in parental disputes about child’s medical treatment may have been oversold

2023-06-27
The role of mediation in preventing disputes between parents and doctors about a seriously ill child’s medical treatment from escalating to litigation may be more limited than hoped for, suggests an analysis of rulings, published online in the Archives of Disease in Childhood. It might have avoided only just under half of these published court cases heard since 1990 in England and Wales, the analysis suggests. Contested medical treatment decisions for children litigated in the courts of England and Wales may be on the rise, say the researchers.   While 10 and 11 such ...

Ask us how to build the circular economy, say scientists

2023-06-27
Governments and companies planning to pursue the circular economy need to involve scientists more directly, states a new report published by the International Society for Industrial Ecology, and led by UCL’s Dr Stijn van Ewijk. The report, published today, draws attention to the weight of relevant expertise found in the field of industrial ecology, a discipline that has been focusing on the minimisation of waste, predicting the impacts of new products, and designing environmentally friendly systems for decades.  The ...

LAST 30 PRESS RELEASES:

Two out of five patients with heart failure do not see a cardiologist even once a year and these patients are more likely to die

AI-enabled ECG algorithm performs well in the early detection of heart failure in Kenya

No cardiac safety concerns reported with a pharmaceutically manufactured cannabidiol formulation

Scientists wash away mystery behind why foams are leakier than expected

TIFRH researchers uncover a mechanism enabling glasses to self-regulate their brittleness

High energy proton accelerator on a table-top — enabled by university class lasers

Life, death and mowing – study reveals Britain’s poetic obsession with the humble lawnmower

Ochsner Transplant Institute’s kidney program achieves ELITE Status

Gender differences in primary care physician earnings and outcomes under Medicare Advantage value-based payment

Can mindfulness combat anxiety?

Could personality tests help make bipolar disorder treatment more precise?

Largest genomic study of veterans with metastatic prostate cancer reveals critical insights for precision medicine

UCF’s ‘bridge doctor’ combines imaging, neural network to efficiently evaluate concrete bridges’ safety

Scientists discover key gene impacts liver energy storage, affecting metabolic disease risk

Study finds that individual layers of synthetic materials can collaborate for greater impact

Researchers find elevated levels of mercury in Colorado mountain wetlands

Study reveals healing the ozone hole helps the Southern Ocean take up carbon

Ultra-robust hydrogels with adhesive properties developed using bamboo cellulose-based carbon nanomaterials

New discovery about how acetaminophen works could improve understanding about pain relievers

What genetic changes made us uniquely human? -- The human intelligence evolved from proximal cis-regulatory saltations

How do bio-based amendments address low nutrient use efficiency and crop yield challenges?

Predicting e-bus battery performance in cold climates: a breakthrough in sustainable transit

Enhancing centrifugal compressor performance with ported shroud technology

Can localized fertilization become a key strategy for green agricultural development?

Log in to your computer with a secret message encoded in a molecule

In healthy aging, carb quality counts

Dietary carbohydrate intake, carbohydrate quality, and healthy aging in women

Trends in home health care among traditional Medicare beneficiaries with or without dementia

Thousands of cardiac ‘digital twins’ offer new insights into the heart

Study reveals impacts of Alzheimer’s disease on the whole body

[Press-News.org] Synthesis of peripherally annulated phenanthroporphyrins
A new approach for peripheral annelation of porphyrinoid