Journal Articles (Chemistry)

2015-01-01

Dong, Shuai, Clive, Derrick L. J., Gao, Jin-Ming

[(tert-Butyldimethylsilyl)oxy]methanethiol [HSCH2OSiMe2Bu-t] is a nucleophilic reagent for 2 introduction of a protected bivalent sulfur; this reagent is complementary to the electrophilic reagent p-MeC6H4SO2SCH2OSiMe2Bu-t. The thiol is prepared by the action of HSLi on...

2018-01-01

Jin, T., Bernard, G.M., Miskolzie, M., Terskikh, V.V., Michaelis, V.K.

A detailed qualitative and quantitative analysis of the short and medium range order of alkaline earth binary borate and ternary borophosphate glasses has been carried out through the use of 11B and 31P magic angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy. In order to understand...

1989-01-01

Loppnow, Glen R., Mathies, Richard A.

A 77‐K cold stage has been developed for spectroscopic measurements in an optical microscope. This stage eliminates fogging of the optical windows observed in an earlier design by adding vacuum jackets around the liquid nitrogen transfer lines and by maximizing the sample‐to‐environment distance...

2019-01-27

Claude Larrivée Aboussafy, Lotte Bettina Anderson Gersby, Antonio Molinaro, Mari-Anne Newman, Todd L. Lowary

The synthesis of bradyrhizose, the monosaccharide component of the lipopolysaccharide O-antigen of the nitrogen-fixing bacteria Bradyrhizobium sp. BTAi1 and sp. ORS278, has been achieved in 25 steps in an overall yield of 6% using myo-inositol and ethyl propiolate as the starting materials. The...

2015-01-01

Shao, Wenjie, Clive, Derrick L. J.

A new family of routes to substituted phenols has been developed. 2-Bromo-3- methoxycyclohex-2-en-1-ones are readily deprotonated at C-6 and the resulting anions react smoothly with a variety of electrophiles; treatment with DBU in PhMe at room temperature then results in efficient aromatization...

2017-01-01

El-Yazbi, Amira F., Wong, Alysha, Loppnow, Glen R.

The human genome is susceptible to change; base mismatches can arise from damaged DNA, replication errors, and spontaneous mutation, and have the potential to cause apoptosis, carcinogenesis, and mutagenesis. Many techniques have been developed for DNA mismatch detection, but many of these...

1998-01-01

Mitambo, Mitambo M., Zhang, Shuliang L., Loppnow, Glen R.

A novel four nuclear magnetic resonance (NMR)-tube holder is described for quantitative Raman and resonance Raman spectroscopy. This cell has advantages over other divided cell designs in producing high precision quantitation and eliminating off-axis errors. Raman spectra were obtained for both...

2014-01-01

Islam, Molla R., Serpe, Michael J.

Optical devices were fabricated by sandwiching a “monolithic” poly(N-isopropylacrylamide-co-N-(3-aminopropyl) methacrylamide hydrochloride) (pNIPAm-co-APMAH) microgel layer between two semitransparent Au layers. These devices, referred to as etalons, exhibit characteristic multipeak reflectance...

2019-01-27

Ryan P. Sweeney, Todd L. Lowary

An approach for the assembly of polyprenol pyrophosphate-based probes of O-polysaccharide biosynthesis in Klebsiella pneumoniae serotype O2a is described. This convergent route features high yielding, diastereoselective glycosylations and the late stage installation of the polyprenol...

2013-01-01

El-Yazbi, Amira F., Loppnow, Glen R.

Absorption of UV light by nucleic acids can result in the formation of molecular lesions in DNA and RNA, leading to mutagenesis, carcinogenesis, and cell death. In this work, hairpin oligonucleotide probes, which have previously been shown to be selective for DNA damage, are used. The hypochromic...