motifs was prepared. The shown heptacyclic derivative exhibits an unprecedented binding preference for certain quadruplex topologies: it recognizes exclusively the human telomeric quadruplex in Na+ buffer but not in K+ buffer. This unique quadruplex binding profile is strongly dependent on the size of the ligand and may result from groove interactions.
We report the synthesis and characterisation of palladium complexes bearing an N-heterocyclic carbene-phosphine oxide bidentate ligand and their use as catalysts for ethylene polymerisation and ethylene/polar monomer copolymerisation.
Lithium trihydroxy/triisopropoxy-2-pyridylborate salts (LTBS): synthesis, isolation, and use in modified Suzuki–Miyaura cross-coupling reactions
作者:Kuanchiang Chen、Richard Peterson、Shivanand K. Math、James B. LaMunyon、Charles A. Testa、Dustin R. Cefalo
DOI:10.1016/j.tetlet.2012.06.145
日期:2012.9
and triisopropoxy 2-borate salts (LTBS) for use in modified Suzuki–Miyauracross-coupling reactions that can be produced in quantities greater than one hundred grams. Pyridyl LTBS provide a viable cross-coupling alternative to unstable 2-pyridylboronic acids, boronates, and trifluoroborate salt derivatives. We also demonstrate the synthesis and cross-coupling of shelf-stable LTBS reagents of other sp2-hybridized
Tri-substituted heteroaryls and methods of making and using the same
申请人:Lee Wen-Cherng
公开号:US20060063809A1
公开(公告)日:2006-03-23
Compounds of formula (I) possess unexpectedly high affinity for Alk 5 and/or Alk 4, and can be useful as antagonists thereof for preventing and/or treating numerous diseases, including fibrotic disorders. In one embodiment, the invention features a compound of the general formula (I).