unusual

Stereodivergent synthesis of chiral spiropyrazolones through Pd-catalyzed asymmetric sequential hydroalkylation of 1,3-enynes: unusual solvent effects on the enantioselectivity

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00358F, Research Article
Shan Wang, Long Li, Yifei Zheng, Luqing Li, Yingcheng Wang, Fangzhi Peng, Zhihui Shao
Chiral spiropyrazolones were constructed through Pd-catalyzed asymmetric sequential hydroalkylation of 1,3-enynes. Four stereoisomers could be obtained through substrate control and chiral ligand control.
To cite this article before page numbers are assigned, use the DOI form of citation above.
The content of this RSS Feed (c) The Royal Society of Chemistry




unusual

Confronting The Weakness of Our Faith in This Unusual Lent

“Lord, I believe; help my unbelief!” The father of the young man in today’s gospel lesson cried out these words with tears in response to the Lord’s statement that “all things are possible to him who believes.” The father in this passage provides a good example of how we should respond to the spiritual challenges posed by our current public health crisis.




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Florida airport encounters unusual 'ground traffic'

A representational image of an alligator. — AFP/file

A large alligator wandering among the planes on the tarmac at a Florida airport was captured on video by a passenger on a moving plane.

The animal, estimated by witnesses to be about 10-feet long, was seen making its way...




unusual

Offshore safety agency seeks to refine approval process for uses of ‘new or unusual technology’

Washington — The Bureau of Safety and Environmental Enforcement has issued a proposed rule that would codify existing agency practice concerning the review and approval of projects proposing to use “new or unusual technology.”




unusual

Offshore safety agency final rule bolsters approval process for ‘new or unusual technology’

Washington — A new Bureau of Safety and Environmental Enforcement final rule codifies existing agency practice related to the review and approval of projects that will feature “new or unusual technology” – including equipment used in high-pressure or high-temperature environments.




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Unusually Hot September to Ease This Weekend

[Science] :
Korea is experiencing an unusually hot September, with thermometers reaching up to 38 degrees Celsius in Gokseong, South Jeolla Province, and Jinju, South Gyeongsang Province, on Tuesday.  Temperatures in most regions in the south and inland areas of the Chungcheong provinces, including Gwangju; Namwon, ...

[more...]




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146: Unusually Spiky

Grey reflects on his recent Greycation while grappling with chaos. Myke is keen to explore a major update to Grey's mailing list. Additionally, they discuss how to determine if a change in business is critical.




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Solveit.Earth's History-Making Founder, Unveils His Most Unusual and Secretive Project: An Experiment to Face Our Humanity, and Uncover the Keys to Answering Our Greatest Questions

Looking through the mind of an unconventional genius, the user delves into the fascinating hidden worlds of numbers, connective logic, belief, and possibility




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Arizona Man Makes History Solving One of Math's Most Infamous Problems Using an Unusual Method That Defies Belief

An Arizona man who once struggled with math in high school, has solved one of the most notorious problems in history, (The Collatz Conjecture). Thought by many to be unsolvable for decades, his accomplishment has profound implications.




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High Court Finds Worker's Heart Attack Wasn't Product of Unusual Stress

The Wyoming Supreme Court ruled that a man's heart attack on his third day of work was not due to clearly unusual or abnormal employment stress for those in his…




unusual

Awareness of an Unusual but Real Diagnosis is Spreading Online

Inability to belch syndrome is real, and doctors have an effective way to treat it.



  • Health & Medicine

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Awareness of an Unusual but Real Diagnosis is Spreading Online

Inability to belch syndrome is real, and doctors have an effective way to treat it.



  • Clinical & Molecular DX

unusual

Awareness of an Unusual but Real Diagnosis is Spreading Online

Inability to belch syndrome is real, and doctors have an effective way to treat it.




unusual

An unusual Google Keyboard bug

Comments




unusual

In Unusual Twist, Roofers Leary of Lowering Workers' Comp Rates

The Florida Roofing Contractors Association urged state regulators to freeze workers' comp rates, citing post-hurricane labor shortages and risks from inexperienced workers despite proposed cuts.




unusual

Five Unusual Raku Features




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MPs Ask Series Of Unusual “What If” Questions

[Updated] Friday’s sitting of the House of Assembly saw a number of unusual “what if” questions posed, including queries pertaining to being kicked out of a church for stealing while committing adultery, being beaten up after sleeping with a neighbour’s wife and buying marijuana. This exchange followed a motion brought by Independent MP Terry Lister […]





unusual

How unusual has this hurricane season been?

Hurricanes Helene and Milton have bookended a particularly stormy period. What's behind it?




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Unusual zwitterionic catalytic site of SARS-CoV-2 main protease revealed by neutron crystallography [Enzymology]

The main protease (3CL Mpro) from SARS–CoV-2, the etiological agent of COVID-19, is an essential enzyme for viral replication. 3CL Mpro possesses an unusual catalytic dyad composed of Cys145 and His41 residues. A critical question in the field has been what the protonation states of the ionizable residues in the substrate-binding active-site cavity are; resolving this point would help understand the catalytic details of the enzyme and inform rational drug development against this pernicious virus. Here, we present the room-temperature neutron structure of 3CL Mpro, which allowed direct determination of hydrogen atom positions and, hence, protonation states in the protease. We observe that the catalytic site natively adopts a zwitterionic reactive form in which Cys145 is in the negatively charged thiolate state and His41 is doubly protonated and positively charged, instead of the neutral unreactive state usually envisaged. The neutron structure also identified the protonation states, and thus electrical charges, of all other amino acid residues and revealed intricate hydrogen-bonding networks in the active-site cavity and at the dimer interface. The fine atomic details present in this structure were made possible by the unique scattering properties of the neutron, which is an ideal probe for locating hydrogen positions and experimentally determining protonation states at near-physiological temperature. Our observations provide critical information for structure-assisted and computational drug design, allowing precise tailoring of inhibitors to the enzyme's electrostatic environment.




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Identification of unusual phospholipids from bovine heart mitochondria by HPLC-MS/MS

Junhwan Kim
Dec 1, 2020; 61:1707-1719
Research Articles




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Identification of unusual phospholipids from bovine heart mitochondria by HPLC-MS/MS [Research Articles]

Phospholipids, including ether phospholipids, are composed of numerous isomeric and isobaric species that have the same backbone and acyl chains. This structural resemblance results in similar fragmentation patterns by collision-induced dissociation of phospholipids regardless of class, yielding complicated MS/MS spectra when isobaric species are analyzed together. Furthermore, the presence of isobaric species can lead to misassignment of species when made solely based on their molecular weights. In this study, we used normal-phase HPLC for ESI-MS/MS analysis of phospholipids from bovine heart mitochondria. Class separation by HPLC eliminates chances for misidentification of isobaric species from different classes of phospholipids. Chromatography yields simple MS/MS spectra without interference from isobaric species, allowing clear identification of peaks corresponding to fragmented ions containing monoacylglycerol backbone derived from losing one acyl chain. Using these fragmented ions, we characterized individual and isomeric species in each class of mitochondrial phospholipids, including unusual species, such as PS, containing an ether linkage and species containing odd-numbered acyl chains in cardiolipin, PS, PI, and PG. We also characterized monolysocardiolipin and dilysocardiolipin, the least abundant but nevertheless important mitochondrial phospholipids. The results clearly show the power of HPLC-MS/MS for identification and characterization of phospholipids, including minor species.




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Anus-Breathing Animals and Pigeon-Guided Missiles: Ig Nobel Prizes Reward Unusual but Valuable Science

The annual award ceremony featured costumes, songs and paper airplanes as scientists recognized comedic research across ten disciplines




unusual

Coldplay's Chris Martin carries out 'unusual' ritual before boarding airplane

Chris Martin has superstitious belief about his deathColdplay frontman, Chris Martin seems to have a superstitious mindset as he fears that he might die in a plane crash one day just like American singer and songwriter, Buddy Holly. Due to this anxiety, Martin has adopted a very unique habit of...




unusual

Our only visit to Uranus came at an unusual time for the planet

Voyager 2 flew by Uranus in 1986, giving us our only up-close look at the planet – but unusual space weather just before the craft arrived has given us a misleading idea about the planet’s magnetic field




unusual

YY1 knockout in pro-B cells impairs lineage commitment, enabling unusual hematopoietic lineage plasticity [Research Papers]

During B-cell development, cells progress through multiple developmental stages, with the pro-B-cell stage defining commitment to the B-cell lineage. YY1 is a ubiquitous transcription factor that is capable of both activation and repression functions. We found here that knockout of YY1 at the pro-B-cell stage eliminates B lineage commitment. YY1 knockout pro-B cells can generate T lineage cells in vitro using the OP9-DL4 feeder system and in vivo after injection into sublethally irradiated Rag1–/– mice. These T lineage-like cells lose their B lineage transcript profile and gain a T-cell lineage profile. Single-cell RNA-seq experiments showed that as YY1 knockout pro-B cells transition into T lineage cells in vitro, various cell clusters adopt transcript profiles representing a multiplicity of hematopoietic lineages, indicating unusual lineage plasticity. In addition, YY1 KO pro-B cells in vivo can give rise to other hematopoietic lineages in vivo. Evaluation of RNA-seq, scRNA-seq, ChIP-seq, and scATAC-seq data indicates that YY1 controls numerous chromatin-modifying proteins leading to increased accessibility of alternative lineage genes in YY1 knockout pro-B cells. Given the ubiquitous nature of YY1 and its dual activation and repression functions, YY1 may regulate commitment in multiple cell lineages.




unusual

Our only visit to Uranus came at an unusual time for the planet

Voyager 2 flew by Uranus in 1986, giving us our only up-close look at the planet – but unusual space weather just before the craft arrived has given us a misleading idea about the planet’s magnetic field




unusual

J. D. Vance Is Walking a Historically Unusual Path

There are not many usable precedents for what J. D. Vance can do with a one-term vice presidency.




unusual

IMF holds unusual talks with Pakistan over $9.4 billion bailout

ISLAMABAD — The International Monetary Fund's Pakistan mission chief Nathan Porter on Tuesday (Nov 12) opened unusual talks with Pakistan over a US$7 billion (S$9.4 billion) bailout approved by its board in September, the finance ministry and sources said. The unscheduled visit of the IMF mission and talks beginning with meeting the country's finance team are too early for first review of the IMF's Extended Fund Facility (EFF), which is due in the first quarter of 2025. The chiefs of Pakistan's central bank and federal board of revenue also attended the meeting besides other officials from both the sides, the statement said. The ministry and the IMF have not officially released details of the visit. Sources in the finance ministry said the Nov 11-15 visit will discuss recent developments and programme performance to date, adding the mission was not part of the first review. The sources declined to be identified as they were not authorised to speak with the media. Pakistan has been struggling with boom-and-bust economic cycles for decades, leading to 23 IMF bailouts since 1958.




unusual

Our only visit to Uranus came at an unusual time for the planet

Voyager 2 flew by Uranus in 1986, giving us our only up-close look at the planet – but unusual space weather just before the craft arrived has given us a misleading idea about the planet’s magnetic field




unusual

Unusual solvent-regulated inversion of a metal stereocenter in an enantiopure Eu2L4 helicate: a new strategy for CPL inversion

Inorg. Chem. Front., 2024, 11,8093-8100
DOI: 10.1039/D4QI02276A, Research Article
Qing Ma, Sen Yin, Ziye Song, Ting Gao, Pengfei Yan, Yanyan Zhou, Hongfeng Li
The dinuclear helicate Eu2(LR)4 exhibits a solvent-regulated metal stereocenter Δ/Λ configurational inversion, independent of P/M helical conformational conversion. This reversal process is accompanied by an inversion of the CPL.
The content of this RSS Feed (c) The Royal Society of Chemistry




unusual

Unusual immunosuppressive pyridine-containing bisnor- (c23), tetranor- (c21) and pentanor- (c20) sesterterpenoids from Tibetan Leucosceptrum canum

Org. Biomol. Chem., 2024, 22,3019-3024
DOI: 10.1039/D4OB00334A, Paper
Man Li, Ling Feng, Han Zhang, Yan-Chun Liu, Ting-Ting Zhou, Yu Zheng, Kai Guo, Yan Liu, Sheng-Hong Li
Six unusual pyridine-containing bisnor- (C23), tetranor- (C21) and pentanor- (C20) sesterterpenoids were obtained from the medicinal plant Leucosceptrum canum of Tibetan origin. The immunosuppressive activities of these sesterterpenoids were observed.
The content of this RSS Feed (c) The Royal Society of Chemistry




unusual

An unusual reaction in nitromethane solution: use of the Cp*Rh moiety to form Prussian blue analogues

Inorg. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QI00343H, Research Article
Huirong Ma, Liangchen Liu, Yuluan Liao, Huatian Shi, Po Sun, Weibin Yu
The direct decomposition of nitromethane into nitrile compounds is a significant challenge due to the occurrence of severe side-reactions.
To cite this article before page numbers are assigned, use the DOI form of citation above.
The content of this RSS Feed (c) The Royal Society of Chemistry




unusual

The unusual cabbage mutation that could boost crop yield | Explained

Some 44 years ago, people found a cabbage plant with a natural mutation that destroyed the plant’s ability to make pollen.




unusual

Social relationships help vampire bats facilitate their unusual blood diets

At home in the tropical forests of Central and South America, vampire bats feed on various animals, including tapirs, mountain lions, penguins and livestock.




unusual

Business unusual

Watch out! Anatolian Tigers on the prowl.



  • Money & Careers

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Unusual RSS Tools

As the masses have adopted RSS as a more mainstream communication medium, Web 2.0 businesses and publishers have adopted unique and unusual tools to manipulate RSS content. Here are just some of the various RSS tools that are currently available...

Unusual RSS Tools




unusual

10 unusual design ideas

Out-of-the-box ideas to spruce up your home




unusual

Pune Crime Files: Unusual abduction involving a plane, train and boat ride ends in early morning rescue op on faraway Ganga island




unusual

A veru unusual property case

Dear Experts Pranam!

My dad has been puchased a land with a small old house (its very old, so may not required consider as a house - or in a demolishing stage) in Kottayam, Kerala, 10+ years back from a person, named as Mr.SELLER and has been registered at the concerned Sub Reg. Office (SRO). And till the last year there is no issue on this and since its a land we will do frequent visit over there to check the fencing etc. are ok and whether it is secured/safe. But last year when we tried to make an attempt to sell and tried find a buyer for the same through some local persons BUT got a news that it is in a despute and some legal issues are there in the court which is surprised us. And after an enquiry we met a person named as Mr.SON who is filed the case on this land. The case was against his Mrs.MOTHER stating that she does not have any legal rights to sell the land to the so called Mr.SELLER (as above) since that land originaaly owned by her husband named as Mr. HUSBAND (he is already expired) and his two siblings/heirs - one sister and a brother. What we understand and told by Mr.SON is, he filed the case in 2014 and now in 2019 mid, as per the court order the case has been won by him and the property will be attached to him and the above siblings. Please be noted that the case was only between him and his mother. Unfortunately his mother also expired prior to the case finals, i,e. his winning.

We have consulted with a legal adviser and got a temperory stay/injection (saying that Mr.SON and siblings been interuupting/disturbing us from staying/residing at our property, so please do the needful to stop their torturing) for the immediate Attachment and so the court has been sent notices to Mr.SON and his siblings/heirs to let the hon.court know about their statements or sayings about this issues by producing their valid documents. THere are 6 persons from the siblings side in this case other than Mr.SON. 2 of them not interested to receive the notice and so become ex.pat. Other three persons addresses are not reachable and so repeated notices two times sent again. Mr. SON was escaping each time by not receving the Notice from Ameen and in the third time he informed the Ameen that he will not receive the notice and Ameen has been noted the info and communicatd to the Hon,Court on the same. THe most important part of this is other than Mr. SON, no one including the above said siblings are not interested in this case but it is by the compulsion of Mr. SON only did involve. by the meantime very unfortunately Mr.SON is expired, recently. He is having wife and two kids.

In this scenario now we are not much interested to drag this case further and wish to make a out of court settlement if possible without any legal issues. is it possible otherwise what else are the BEST and immediate Resulting solutions in this case. I am asking this to know about your opinions in this case please.

Thanking you  in advance, Regards

Krishnan 

                 




unusual

'I was like Baresi, Maldini and Beckenbauer in one!': Berbatov recalls his most unusual game for Man Utd

The former Bulgaria international recalled a League Cup game against Leeds where he played in defence for Sir Alex Ferguson's team





unusual

B.C. in for 'unusual' summer where connections must expand without letting virus take hold, says top doctor

B.C. Provincial Health Officer Dr. Bonnie Henry announced 15 new coronavirus cases in the province on Saturday, bringing the current total to 2,330.



  • News/Canada/British Columbia

unusual

Can you name these unusual road signs from around Europe in our quiz?

While there is some a general uniformity and standardisation when it comes to roadside instructions, some European countries have signs that are unique from any other nation.




unusual

Instagram hit: Shih tzu Paningning sleeps in unusual positions

Paningning, a shih tzu, sleeps flat on her back like a human and often drifts off in unusual places. Owner Janess Cua from the Philippines shared photos of the puppy which have since gone viral.




unusual

PIX: Scenes from an unusual protest

More than 40 artists from four cities -- Delhi, Mumbai, Navi Mumbai, Pune -- gathered in Mumbra, a township near Mumbai.The artists joined women in Mumbra protesting the Citizens (Amendment) Act.




unusual

An unusually short inter­molecular N—H⋯N hydrogen bond in crystals of the hemi-hydro­chloride salt of 1-exo-acetamido­pyrrolizidine

The title compound [systematic name: (1R*, 8S)-2-acetamidoocta­hydro­pyrrol­izin-4-ium chloride–N-[(1R, 8S)-hexa­hydro-1H-pyrrolizin-2-yl)acetamide (1/1)], 2(C9H16N2O)·HCl or C9H17N2O+·Cl−·C9H16N2O, arose as an unexpected product when 1-exo-acetamido­pyrrolizidine (AcAP; C9H16N2O) was dissolved in CHCl3. Within the AcAP pyrrolizidine group, the unsubstituted five-membered ring is disordered over two orientations in a 0.897 (5):0.103 (5) ratio. Two AcAP mol­ecules related by a crystallographic twofold axis link to H+ and Cl− ions lying on the rotation axis, thereby forming N—H⋯N and N—H⋯Cl⋯H—N hydrogen bonds. The first of these has an unusually short N⋯N separation of 2.616 (2) Å: refinement of different models against the present data set could not distinguish between a symmetrical hydrogen bond (H atom lying on the twofold axis and equidistant from the N atoms) or static or dynamic disorder models (i.e. N—H⋯N + N⋯H—N). Computational studies suggest that the disorder model is slightly more stable, but the energy difference is very small.




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Lofty experiments with gliding ants reveals secrets of their unusual flight

One of the most challenging aspects of this research is simply studying these insects as they are falling, says Yanoviak, a tropical arthropod ecologist at the University of Arkansas, Little Rock. Small body size, rapid descent, and the long distances that they can fall, make accurate data taking a challenge.

The post Lofty experiments with gliding ants reveals secrets of their unusual flight appeared first on Smithsonian Insider.




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Unusual Credit Card Scam




unusual

Unusually popular Thanksgiving foods reveal America's love of non-dairy whipped topping

NYT and Google teamed up to find the most distinctive Thanksgiving dishes by state. Some of the more unusual ones have whipped topping in common.




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Dolphin deathtoll: Feds declare 'unusual mortality event' on East Coast

The NOAA suspects the infectious morbillivirus is responsible for the unusually high number of dolphin strandings and deaths this month.