A Blue-to-Red Energy-Transfer Thymidine Analogue That Functions in DNA
摘要:
The thymidine analogue 1 is a blue-to-red energy transfer cassette designed to absorb UV light in the 300 nm region and emit it as fluorescence at around 520 nm. When incorporated into DNA, the fluorescence intensity of this modified nucleobase is not significantly reduced by the surrounding structure in the oligonucleotides.
Syntheses of Regioisomerically Pure 5- or 6-Halogenated Fluoresceins
作者:Guan-Sheng Jiao、Jin Wook Han、Kevin Burgess
DOI:10.1021/jo034724f
日期:2003.10.1
Three routes to regioisomerically pure 5- and 6-iodofluoresceins or 5- and 6-bromofluoresceins are described. The first, shown in Scheme 1, involves diazotization/iodination of the corresponding aminofluoresceins. In the second approach (Scheme 2) a mixture of regioisomeric fluoresceins was prepared, and the 5-bromo isomers were isolated as the ring closed diacetates 9b and 11 by fractional crystallization
Oligonucleotides with strongly fluorescent groups π-Conjugated to a nucleobase: syntheses, melting temperatures, and conformation
作者:Guan-Sheng Jiao、Kevin Burgess
DOI:10.1016/s0960-894x(03)00555-9
日期:2003.8
Phosphoramidite 1 was prepared, incorporated into oligonuelcotides, and these were studied via thermal denaturation and circular dichroism. (C) 2003 Elsevier Ltd. All rights reserved.