Fragment self-assembly was used for producing clusters with a variety of scaffolds and ligands, and an effective siRNA vector was identified.
片段自组装被用于生产具有多种支架和配体的簇,并成功识别了一种有效的siRNA载体。
Establishment of a Charge Reversal Derivatization Strategy to Improve the Ionization Efficiency of Limaprost and Investigation of the Fragmentation Patterns of Limaprost Derivatives Via Exclusive Neutral Loss and Survival Yield Method
作者:Dong Sun、Xiangjun Meng、Tianming Ren、John Paul Fawcett、Hualu Wang、Jingkai Gu
DOI:10.1007/s13361-018-1924-z
日期:2018.7.1
improve the ionizationefficiency of limaprost, an oral prostaglandin E1 (PGE1) synthetic analog, we investigated a charge reversal derivatization strategy in electrospray ionization mass spectrometry (ESI-MS). We established that the cholamine derivative exhibits much greater signal intensity in the positive-ion mode compared with limaprost in the negative ion mode. Collision-induced dissociation
electrolytic electrospray ionization provided a general solution for the in situ monitoring and characterization of electrochemicalreactionintermediates by mass spectrometry. Its successful application in discovery and identification of active nitrene intermediates during electrochemical processes proved this platform a powerful tool for reaction-mechanism studies in the future.
A Redox Isomerization Strategy for Accessing Modular Azobenzene Photoswitches with Near Quantitative Bidirectional Photoconversion
作者:Jie S. Zhu、Julio M. Larach、Robert J. Tombari、Phillip W. Gingrich、Stanley R. Bode、Jeremy R. Tuck、Hunter T. Warren、Jung-Ho Son、Whitney C. Duim、James C. Fettinger、Makhluf J. Haddadin、Dean J. Tantillo、Mark J. Kurth、David E. Olson
DOI:10.1021/acs.orglett.9b03387
日期:2019.11.1
Photoswitches capable of accessing two geometric states are highly desirable, especially if their design is modular and incorporates a pharmacophore tethering site. We describe a redox isomerization strategy for synthesizing p-formylazobenzenes from p-nitrobenzyl alcohol. The resulting azo-aldehydes can be readily converted to photoswitchable compounds with excellent photophysical properties using simple hydrazide click chemistry. As a proof of principle, we synthesized a photoswitchable surfactant enabling the photocontrol of an emulsion with exceptionally high spatiotemporal precision.
KIDWELL D. A.; ROSS M. M.; COLTON R. J., SECONDARY ION MASS SPECTROM. SIMS 5. PROC. 5 INT. CONF., WASHINGTON, DC.,+