Novel chalcogenides of thymidine and uridine: synthesis, properties and applications
摘要:
A facile and efficient methodology has been developed for the synthesis of dithymidine and di-uridine derived disulfides using benzyltriethylammonium tetrathiomolybdate as a sulfur transfer reagent. However, a similar reaction of thymidine derivative with tetraethylammonium tetraselenotungstate as a selenium transfer reagent resulted in the formation of an unexpected cyclic diselenide. The disulfide derivatives of nucleosides have been used as precursors in a tandem disulfide cleavage-Michael addition/ring opening reactions to construct aminoacid and carbocyclic derivatives of nucleosides. (C) 2007 Elsevier Ltd. All rights reserved.
NEW 3′-DEOXYTHYMIDINES BEARING A NUCLEOPHILIC 3′-SUBSTITUENT
作者:Anatoly M. Belostotskii、Helen Keren-Yeshuah、Jael Lexner、Alfred Hassner
DOI:10.1081/ncn-100001439
日期:2001.2.26
New potential cancer-driven as well as HIV-driven nucleoside heteroanalogs, such as 3'-thio- and 3'- as well as 5'-selenosubstituted thymidines, have been synthesized. We also report an effective method for the preparation of novel nucleoside derivatives, bis(deoxynucleoside) diselenides, in nearly quantitative yields. The North conformation is significantly populated in the conformational equilibrium for-3'-alpha -alkylthiothymidines.
Novel chalcogenides of thymidine and uridine: synthesis, properties and applications
A facile and efficient methodology has been developed for the synthesis of dithymidine and di-uridine derived disulfides using benzyltriethylammonium tetrathiomolybdate as a sulfur transfer reagent. However, a similar reaction of thymidine derivative with tetraethylammonium tetraselenotungstate as a selenium transfer reagent resulted in the formation of an unexpected cyclic diselenide. The disulfide derivatives of nucleosides have been used as precursors in a tandem disulfide cleavage-Michael addition/ring opening reactions to construct aminoacid and carbocyclic derivatives of nucleosides. (C) 2007 Elsevier Ltd. All rights reserved.