Anomeric O-alkylation/arylation is applied to the synthesis of 2-deoxy-beta-glycosides. Treatment of lactols with NaH in dioxane followed by the addition of electrophiles leads to the formation of 2-deoxy-beta-glycosides in high yield and high selectivity. The high beta-selectivity observed here demonstrates a powerful stereoelectronic effect for the stereoselective formation of acetals under k...

Katrina Samperi School of Computer Science The University of Birmingham Birmingham, B15 2TT UK www.cs.bham.ac.uk/~kxs401 [email protected] Russell Beale School of Computer Science The University of Birmingham Birmingham, B15 2TT UK www.cs.bham.ac.uk/~rxb [email protected] Nick Hawes School of Computer Science The University of Birmingham Birmingham, B15 2TT UK www.cs.bham.ac.uk/~nah n...

It has been revealed for the first time that co-promoted by CuCl and NaH in the presence of molecular oxygen (air), the reaction of dicinnamoyl ketene dithioacetals as the acyclic C6 synthons with ethyl cyanoacetate gives functionalized seven-membered carbocycles. A mechanism is proposed involving a tandem Michael addition-intramolecular radical cyclization-benzyl C(sp(3))-H bond oxidation.

It was 25 years ago when the first experiment in nearfield acoustical holography (NAH) took place. Since the first paper appeared in 1980, published in Phys Rev Lett by Williams and Maynard[1], there has been a world wide explosion of research and development, with practical applications finding its way into may varied noise and vibration problems in both military and industry. An overview of t...

Shin HWANG*, Woo-Hyoung KANG, Myoung Soo KIM, Jae Geun LEE, Nam-Joon YI, YoungRok CHOI, Dong-Sik Yang-Won NAH, Jong Man KIM. Ann Hepatobiliary Pancreat Surg 2022;26:S218. https://doi.org/10.14701/ahbps.2022S1.LV-PP-8-2

Cloning and molecular ecological studies have underestimated the diversity of polycyclic aromatic hydrocarbon (PAH) catabolic genes by emphasizing classical nah-like (nah, ndo, pah, and dox) sequences. Here we report the description of a divergent set of PAH catabolic genes, the phn genes, which although isofunctional to the classical nah-like genes, show very low homology. This phn locus, whic...

background: acute poisoning has been reported to be the most common reason for hospitalization in iran. this study was designed to delineate the toxic agents responsible for acute poisonings in iran by reviewing poisoning cases treated at four major referral hospitals for treatment of poisoning across the country. methods: this was a descriptive retrospective study on poisoned patients treated ...