Birth after uterus transplant
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Two University of Virginia scientists have been elected to the prestigious American Academy of Arts & Sciences, a storied group founded during the Revolutionary War by John Adams, John Hancock and 60 other scholar-patriots to advance the public good.
Diazoacetic acid esters are important intermediates in drug and agrochemical synthesis, but their preparation typically requires hazardous diazomethane. Researchers from the Tokyo University of Science developed a safer method using a Michael addition-mediated azide-to-diazo conversion. By pretreating 2-azidoacrylic acid esters with a bulky phosphine followed by nucleophile addition, they produced β-heteroatom-substituted diazo esters without toxic precursors. This simpler approach offers a practical and flexible route to access diverse organonitrogen compounds.
A small molecule in the blood of pregnant women is linked to children’s risk of developing childhood asthma and respiratory infections, a new study shows.
After public health experts declared measles eliminated in the U.S. in 2000, the U.S. Center for Disease Control and Prevention (CDC) established seven indicators of measles elimination status to ensure that the country remained on track. Now, analyzing these same indicators, Boston Children’s Hospital researchers find that the U.S. missed four of the seven criteria, with the others at risk. These findings are published in The Lancet.