1529770-75-9Relevant academic research and scientific papers
Wavelength-selective cleavage of o-nitrobenzyl and polyheteroaromatic benzyl protecting groups
Piloto, Ana M.,Costa, Susana P.G.,Gon?alves, M. Sameiro T.
, p. 650 - 657 (2014/02/14)
Evaluation of the wavelength-selective cleavage of five photolabile protecting groups from two different families has been performed. Alanine, as a model bifunctional target molecule was masked at the amino terminal with o-nitrobenzyl group and at the carboxylic terminal with benzyl-type nitrogen and oxygen polyheteroaromatics, namely acridine, (thioxo)benzocoumarin and a coumarin built on the julolidine nucleus. The photosensitivity of the corresponding alanine conjugates was studied at selected wavelengths with HPLC/UV and 1H NMR monitoring. The release of the fully deprotected molecule could be achieved by sequential irradiation in variable irradiation times, which were dependent on the heteroaromatic group used.
