Efficient synthesis of novel chalcogen-containing derivatives of DNA nucleobases
作者:Guoxiong Hua、Junyi Du、David B. Cordes、Alexandra M.Z. Slawin、J. Derek Woollins
DOI:10.1016/j.tet.2015.02.005
日期:2015.3
The formation of a library of chalcogen-containing DNA nucleobase derivatives is presented. Reacting easily accessible 9-(2-bromoethyl)adenine with chalcogen-containing nucleophilic reagents led to a series of novel heteroatom derivatives incorporating S, Se and Te atoms in satisfactory yields. Two representative X-ray structures are reported. (C) 2015 Elsevier Ltd. All rights reserved.
Synthesis and structure of novel [Ph(RO)PSe2]– complexes
作者:Ian P. Gray、Alexandra M. Z. Slawin、J. Derek Woollins
DOI:10.1039/b503793j
日期:——
Reaction of (PhPSe2)2
(Woollins reagent) with NaOR (R = Me, Et, iPr) gives the non-symmetric phosphonodiselenoato anions [Ph(RO)PSe2]â which can be complexed to a range of metals. The nickel complex Ni[Ph(MeO)PSe2]2 adopts a square-planar ML2 structure while the cadmium complex Cd[Ph(MeO)PSe2]2 displays a dimeric M2L4 structure. Two different lead complexes are observed, one consisting of PbL2 units joined by Pbâ¯Se interactions to form distinct dimeric pairs. The other displays a novel dimeric structure built around a central four-membered Pb2Se2 ring. All new compounds have been characterised spectroscopically (31P, 1H, 13C NMR, IR, mass spectroscopy), by elemental analysis and five demonstrative X-ray structures are reported.