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A water mediated multicomponent reaction for the synthesis of novel spirooxindole derivatives and their antifungal activity

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00256C, Paper
Min Zhang, Liang Shi, Li Chen, Zhengyu Liu, Ting Zhao, Chunyin Zhu, Liuqing Yang
A total of 27 novel spirooxindoles were synthesized through a water mediated three-component reaction of isatin, 4-aminocoumarin, and 1,3-cyclodicarbonyl compounds. Several compounds showed excellent antifungal activity against Physalospora piricola.
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Dehydrative alkynylation of 3-hydroxyisoindolinones with terminal alkynes for the synthesis of 3-alkynylated 3,3-disubstituted isoindolinones

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00190G, Paper
Kai-Cheng Yang, Shi-Lu Zheng, Zhong Wen, Yu-Shan Zhang, Hai-Liang Ni, Long Chen
A HOTf or Fe(OTf)3-catalyzed dehydrative alkynylation of 3-hydroxyisoindolinones with terminal alkynes was developed, which represents a brand-new procedure for the synthesis of 3-alkynylated 3,3-disubstituted isoindolinones.
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Use of ionic liquids in amidation reactions for proteolysis targeting chimera synthesis

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00304G, Paper
Michela Eleuteri, Jenny Desantis, Gabriele Cruciani, Raimondo Germani, Laura Goracci
Selective degradation of disease-causing proteins using proteolysis targeting chimeras (PROTACs) has gained great attention, thanks to its several advantages over traditional therapeutic modalities.
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A rhodium-catalyzed cascade C–H activation/annulation strategy for the expeditious assembly of pyrrolidinedione-fused 1,2-benzothiazines

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00193A, Paper
Yinsong Wu, Guanghao Shi, Yanan Liu, Yangzilin Kong, Mengdi Wu, Demao Wang, Xiaobing Wu, Yongjia Shang, Xinwei He
We have developed a cascade annulation strategy triggered by rhodium(III)-catalyzed C–H activation for the expeditious assembly of pyrrolidinedione-fused 1,2-benzothiazines from free NH-sulfoximines with maleimides under mild conditions.
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Synthesis of Asp-based lactam cyclic peptides using an amide-bonded diaminodiacid to prevent aspartimide formation

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00472H, Communication
Wen-Jie Li, Jun-You Chen, Hui-Xia Zhu, Yi-Ming Li, Yang Xu
A diaminodiacid (DADA) containing an amide bond can be used in Fmoc solid-phase peptide synthesis (SPPS) of an Asp-based lactam cyclic peptide with no aspartimide formation.
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DFT investigation of the DDQ-catalytic mechanism for constructing C–O bonds

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00346B, Paper
Xiu-Fang Zheng, Da-Gang Zhou, Li-Jun Yang
The DDQ-catalytic mechanisms for constructing C–O bonds via H2O and CH3OH as oxygen sources have been investigated with DFT.
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Friedel–Crafts reactions for biomolecular chemistry

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00406J, Review Article
Open Access
Jun Ohata
This review demonstrates advances in Friedel–Crafts alkylation and acylation reactions in a variety of biomolecular chemistry fields.
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Albumin–ruthenium catalyst conjugate for bio-orthogonal uncaging of alloc group

Org. Biomol. Chem., 2024, 22,2992-3000
DOI: 10.1039/D4OB00234B, Paper
Kimberly S. Taylor, Madison M. McMonagle, Schaelee C. Guy, Ariana M. Human-McKinnon, Shumpei Asamizu, Heidi J. Fletcher, Bradley W. Davis, Takashi L. Suyama
An organo–ruthenium catalyst conjugated to albumin efficiently unmasks an alloc group under physiologically relevant conditions.
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Expanding the scope of the successive ring expansion strategy for macrocycle and medium-sized ring synthesis: unreactive and reactive lactams

Org. Biomol. Chem., 2024, 22,2985-2991
DOI: 10.1039/D4OB00285G, Paper
Open Access
Zhongzhen Yang, Marion Arnoux, Damien Hazelard, Owen R. Hughes, Joe Nabarro, Adrian C. Whitwood, Martin A. Fascione, Christopher D. Spicer, Philippe Compain, William P. Unsworth
New Successive Ring Expansion (SuRE) protocols are described for use on unreactive lactams, as well as iminosugar derived lactams.
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A phosphamide nucleotide analog: a substrate for polymerase synthesis of DNA

Org. Biomol. Chem., 2024, 22,2963-2967
DOI: 10.1039/D4OB00089G, Communication
Jiong Meng, Qiaqia Guo, Xiaona Zhai, Song Yang, Shuai Wang, Pengcheng Wang, Debin Ji
A phosphamide nucleotide analog (dNTPγNH2) exhibited higher stability than dNTPs and can be recognized by DNA polymerases in PCR.
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A pyridine-N-oxide catenane for cation recognition

Org. Biomol. Chem., 2024, 22,3001-3008
DOI: 10.1039/D4OB00176A, Paper
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Sean R. Barlow, Nathan R. Halcovitch, Nicholas H. Evans
A pyridine-N-oxide containing [2]catenane may be reversibly protonated, as well as bind lithium cations more strongly than sodium cations.
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Stereoselective synthesis of (R)- and (S)-1,2-diazetidine-3-carboxylic acid derivatives for peptidomimetics

Org. Biomol. Chem., 2024, 22,2974-2977
DOI: 10.1039/D4OB00278D, Communication
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Matthew Nutter, Henry Stone, Michael Shipman, Stefan Roesner
Stereoselective synthesis of both enantiomers of orthogonally protected 1,2-diazetidine-3-carboxylic acid (aAze) from homochiral glycidol and its application in peptidomimetics.
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Selective enhancement of (6–4) photoproduct formation in dithymine dinucleotides driven by specific sugar puckering

Org. Biomol. Chem., 2024, 22,3025-3034
DOI: 10.1039/D4OB00279B, Paper
Jouda Jakhlal, Clément Denhez, Stéphanie Coantic-Castex, Agathe Martinez, Dominique Harakat, Thierry Douki, Dominique Guillaume, Pascale Clivio
Evidence is presented that (6–4) photoproduct formation between two thymine residues in dinucleotide analogues is significantly and specifically enhanced when the 5''- and 3''-end sugar puckering are mainly north and south, respectively.
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Charge-transfer inclusion complex formation of the tropylium cation with prism[6]arenes

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00423J, Communication
Guojiao Zhang, Channi Cheng, Zhengxiang Li, Dezhi Zhao, Chengyou Han
We report that charge-transfer (CT) inclusion complexes were formed between prism[6]arenes and tropylium cation. Additionally, the CT complex showed Cl/Ag+ responsiveness which can be easily monitored by the naked eye.
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Electro-oxidative three-component cascade coupling of isocyanides with elemental sulfur and amines for the synthesis of 2-aminobenzothiazoles

Org. Biomol. Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4OB00432A, Paper
Peng-Fei Huang, Jia-Le Fu, Ying Peng, Jian-Hong Fan, Long-Jin Zhong, Kewen Tang, Yu Liu
2-Aminobenzothiazoles are commonly encountered in various functional compounds. Herein, we disclose an electro-oxidative three-component reaction for the effective synthesis of 2-aminobenzothiazoles under mild conditions, utilizing non-toxic and abundant elemental sulfur...
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An FeCl3-catalyzed three-component reaction for the synthesis of β-(1,2,3-triazolyl)-ketones using DMF as a one-carbon source

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00207E, Communication
Ruilin Fang, Lei Zheng, Xuyang Chen, Can Wang, Yunfeng Chen
FeCl3-catalyzed oxidative condensation of NH-1,2,3-triazoles and aryl methyl ketones and DMF has been reported.
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Measuring local pH at interfaces from molecular tumbling: A concept for designing EPR-active pH-sensitive labels and probes

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00167B, Paper
Open Access
Maxim A. Voinov, Nicholas Nunn, Roshan Rana, Atli Davidsson, Alex I. Smirnov, Tatyana I. Smirnova
EPR-based local pH measurements based on changes in rotational dynamics of spin-bearing molecules upon protonation.
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New Generation of Highly Reactive Allylborating Agents For Cu(I)-Catalyzed Allylation of Chiral Sulfinylimines

Org. Biomol. Chem., 2024, Accepted Manuscript
DOI: 10.1039/D4OB00291A, Paper
Michael S. Alexeev, Tatyana V. Strelkova, Michail M. Ilyin, Jr., Yulia V. Nelyubina, Ivan A. Bespalov, Michael Medvedev, Victor N Khrustalev, Nikolai Kuznetsov
The implementation of selective catalytic processes with highly active reagents is an attractive strategy that meets modern principles of sustainable development of chemistry. In the current study, we for the...
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Tetrabutylammonium decatungstate (TBADT), a compelling and trailblazing catalyst for visible-light-induced organic photocatalysis

Org. Biomol. Chem., 2024, Advance Article
DOI: 10.1039/D4OB00171K, Review Article
Bor-Cherng Hong, Ranadheer Reddy Indurmuddam
This review summarizes recent developments in visible-light or near-visible-light photocatalysis reactions enabled by the TBADT catalyst.
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Built-in Browser Support for Responsive Images

Take advantage of the new element and new features of in your next responsive website.




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Wanted: A booster dose for airlines

As vaccination numbers increase, airlines and the government look for the middle path to revive the beleagured travel sector




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A lift for MRO

It is time to help Indian aviation’s technical side realise its potential




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Year-end blues for beleagued airlines

The results of IndiGo and SpiceJet hold clues to the mid-term future of the country’s airline industry




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Reskilling of airline workforce needed

Industry grapples with skilling/reskilling employees right from pilots to ground handling staff whose skills may be redundant




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A380: How Airbus forecast misfired

Sinks $25 billion in the process




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2022 holds promise for the airline sector

Omicron might dent growth, but the long-term outlook seems promising




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Demand for more flight schools soars

Pilot shortage is hurting airline operations in India, with the industry expected to need at least 1,000 to 1,500 pilots every year




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Next order of business for Tata Sons

How will Tata Sons turn around all the airlines under its fold, except maybe the Kochi-based Air India Express?




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Another tough year for airlines

Ukraine-Russia conflict to result in the steep escalation of aircraft leasing charges




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First-ever gravity-defying plane swap set for April 24

Two pilots will swap planes mid-air




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Electric aircraft set to transform urban mobility 

Investors are pouring in billions of dollars into eVTOL project (electric vertical take offs and landing aircraft) to ferry passengers




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Yoke vs. sidestick: Jury still out on what works best for pilots

Why do Airbus commercial aircraft have sidesticks and Boeing have yokes as control units?




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Airlines’ performance metrics may need an overhaul

It may be time to revisit RASK, CASK metrics; benchmarking based on cost drivers can boost an airline’s performance




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Youtube introduces shopping affiliate programme for eligible Indian creators via Flipkart and Myntra

As more platforms allow creators to earn from viewers’ purchases of featured products, YouTube also announced its Shopping affiliate programme in India




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Sarvam AI launches Sarvam 1 for Indic languages

The custom training corpus, Sarvam-2T comprised of 20 percent datasets in Hindi as well as English and programming languages so the AI model can perform multilingual tasks




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Hong Kong unveils responsible AI framework for financial sector

Hong Kong’s responsible AI framework comes amid increasing international competition and tensions affecting access to AI technology




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Meta builds AI search engine to cut Google, Bing reliance, the Information reports

The Facebook-owner currently relies on Google and Bing search engines to give users answers on news, stocks and sports




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Jio’s Diwali Dhamaka plan offers year-long prepaid plan for ₹3,599

Jio is offering a prepaid plan of 2.5 GB of data per day for an entire year, priced at₹3,599, as part of a Diwali offer




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GitHub unveils multi-model Copilot, Spark for AI developers

Anthropic’s Claude 3.5 Sonnet will be available via GitHub Copilot starting today and Google’s Gemini 1.5 Pro will be available in the coming weeks




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Crypto firm Consensys to cut 20% of workforce amid macroeconomic, regulatory headwinds

The crypto firm added that elevated interest rates, inflationary pressures, and tightening liquidity have created a more “cautious macroeconomic environment”




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Chinese researchers develop AI model for military use on back of Meta's Llama

ChatBIT was fine-tuned and "optimised for dialogue and question-answering tasks in the military field", the paper said




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Dropbox to lay off 20% of its workforce

Last year in April, Dropbox fired 16% of the workforce for similar reasons due to a decrease in cloud growth and spent money in hiring AI specialists instead




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Transformation Stories #4 A New Podcast Interview With Me (Rob Larsen)

Check out yours truly on an episode of Atlas Systems’ Transformation Stories. A hands-on leader and change-maker with 20 years of experience, Rob Larsen remains at the forefront of software-led innovation – in financial services and the larger enterprise world. In this all-new conversation with Atlas Systems, Larsen offers insights into finding the right pace […]




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WHO to evacuate 1,000 Gazan women, children for urgent medical care

Last week, U.N. investigators said Israel was deliberately targeting health facilities in Gaza, and killing and torturing medical personnel there, accusing the country of "crimes against humanity".




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Centre eyes ‘presumed consent’ for cornea retrieval in hospital deaths

THOTA may be amended to facilitate retrieval of cornea from all Indians who die in hospitals, without family consent. 




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Are cats good for our health?

Living with a cat can have a profound – and sometimes surprising – effect on our physical and mental health. Still, living with cats is not without risks




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For type 2 diabetes, focusing on when you eat – not what – can help control blood sugar

Time-restricted eating, also known as the 16:8 diet, became popular for weight loss around 2015. Studies have since shown it is also an effective way for people with type 2 diabetes to manage blood glucose




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Covid lessons learned? U.N. summit mulls plan for healthy planet, and humans

At the U.N. summit in Cali, delegates are working on a “biodiversity and health action plan” proposed for adoption by the 196 member nations of the Convention on Biological Diversity




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30,000 critical care beds, regional centres for National Institute of Virology are among plans under PM-ABHIM: V.K. Paul

Expanding healthcare infrastructure plans also include integrated public health units in 600 districts and 30 branches of the National Centre for Disease Control, Niti Aayog member Dr. Paul has said




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What is stereotactic radiation therapy for prostate cancer? How does it compare to other treatments?

Stereotactic radiotherapy uses high doses of radiation to target and kill cancer cells; it uses newer machines that can deliver very focused radiation beams