50501-38-7Relevant articles and documents
Synthesis and spectroscopy of anionic tridentate benzimidazole-pyridine carboxylate and tetrazolate chromophore ligands
Shavaleev, Nail M.,Eliseeva, Svetlana V.
, p. 81 - 86 (2015)
We report on seven new anionic benzimidazole-pyridine carboxylate and tetrazolate tridentate N^N^O and N^N^N ligands that are modified with chromophore (phenyl, biphenyl, naphthyl) and solubilizing groups. The ligands are UV chromophores with the lowest-energy absorption maxima at 312-335 nm and with the molar absorption coefficients of (20-25) × 103 M-1 cm-1 in DMSO solution. The ligands form neutral complexes with trivalent lanthanides and sensitize the red luminescence of europium. The triplet state energies of the deprotonated ligands, which were measured from the phosphorescence spectra of their lanthanum complexes at 77 K, are in the range of (18.8-21.1) × 103 cm-1. We also describe synthesis of non-symmetric pyridines that are 2,6- and 2,4,6-substituted with hydroxymethyl, carboxaldehyde, and carbonitrile groups.
BENZISOXAZOLE COMPOUND
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Page/Page column 169-170, (2009/02/10)
Disclosed is a compound represented by the general formula (I) or a salt thereof: wherein any one of R1, R2 and R3 represents a group represented by the formula: -(CH2)m-NR11R12 (wherein m is 1 or 2; and R11 and R12 independently represent a hydrogen atom or a C1-6 alkyl group or may, together with a nitrogen atom to which R11 and R12 are bound, form a 4- or 5-membered cyclic group); the remaining two or R1, R2 and R3 independently represent a group represented by the formula: -(O)n-R21 (wherein n is 0 or 1; and R21 represents a hydrogen atom, a C1-6 alkyl group, a C2-6 alkenyl group, a C2-6 alkynyl group, or the like); and R4 represents a C1-6 alkyl group which may have a substituent or the like.
4-HETEROARYLMETHYL SUBSTITUTED PHTHALAZINONE DERIVATIVES
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Page/Page column 44-45, (2008/06/13)
A compound of formula (I): for use in treating cancer or other diseases ameliorated by the inhibition of PARP, wherein: A and B together represent an optionally substituted, fused aromatic ring; X can be NRx or CRxRy; if X=NRx then n is 1 or 2 and if X=CRxRy then n is 1; Rx is selected from the group consisting of H, optionally substituted C1-20 alkyl, C5-20 aryl, C3-20 heterocyclyl, amido, thioamido, ester, acyl, and sulfonyl groups; Ry is selected from H, hydroxy, amino; or Rx and Ry may together form a spiro-C3-7 cycloalkyl or heterocyclyl group; RC1 and RC2 are independently selected from the group consisting of hydrogen and C1-4 alkyl, or when X is CRxRy, RC1, RC2, Rx and Ry, together with the carbon atoms to which they are attached, may form an optionally substituted fused aromatic ring; R1 is selected from H and halo; and Het is selected from: (i) formula (i), where Y1 is selected from CH and N, Y2 is selected from CH and N, Y3 is selected from CH, CF and N, where only one or two of Y1, Y2 and Y3 can be N; and (ii) formula (ii), where Q is O or S.
