Heptamethine cyanine dyes are attractive compounds for imaging purposes in biomedical applications because of their chemical and photophysical properties exhibited in the nearinfrared region. A series of meso amino-substituted heptamethine cyanine dyes with indolenine, benz[e]indolenine and benz[c,d]indolenine heterocyclic moieties were synthesized and their spectral properties including fluore...

The E/C alpha- and beta-subunits of intra-I-region recombinants were analyzed for primary structural variation by comparative tryptic peptide mapping. The E/C alpha-polypeptides from B10.A, B10.A (3R) and B10.A (5R) showed complete coincident elution of peptides; the E/C beta-chains from B10.A and 3R (or 5R) were approximately 40% different. This suggests that the structural gene for the E/C be...

The 1-(2,3,4,5,10,20,30,40-octamethylferrocen-1-yl)-3-(ruthenocenyl)allylium cation readily undergoes one-electron oxidation to a dication in which an octamethylferrocenium moiety is bridged by a vinylene group to a [( -fulvene)( -cyclopentadienyl)ruthenium] moiety. In the title compound, 1-(2,3,4,5,10,20,30,40-octamethylferrocen-1-yl)-3-(ruthenocenylidene)prop-1-enium(2+) bis(tetra ̄uoroborate)...

BACKGROUND Overexpression of recombinant proteins usually triggers the induction of heat shock proteins that regulate aggregation and solubility of the overexpressed protein. The two-dimensional gel electrophoresis (2-DE)-mass spectrometry approach was used to profile the proteome of Escherichia coli overexpressing N-acetyl-D-glucosamine 2-epimerase (GlcNAc 2-epimerase) and N-acetyl-D-neuramini...

Engineering a photo isomerized cyanine based molecular rotor to enhance the sensitivity towards viscosity of medium: an efficient tool for differentiating abnormal cells by restriction internal motion.

From leaves of Turpenia ternata (Staphylaceae), one megastigmane and seven of its glucosides (1-8) were isolated. Megastigmane and two of the glucosides were found to be known compounds, namely, 3S,5R,6R,9S-tetrahydroxymegastigmane (1), corchoionoside C (2), and icariside B4 (3). The structures of compounds 4-8 (turpinionosides A-E, respectively) were elucidated by means of spectroscopic analys...

5,6-dihydroxy-5,6-dihydrothymidine (thymidine glycol) is a major product of the reaction of thymidine with reactive oxygen species, including those generated by ionizing radiation. Thymidine glycol exists as 2 diastereomeric pairs by virtue of the chirality of the C(5) and C(6) atoms. A simple procedure is described for synthesizing and purifying each of the diastereomeric pairs separately. Aft...

The new heterocycles compound (2S, 5R)-6-(benzyloxy)-7-oxo-1, 6-diazabicyclo [3.2.1] octane-2carboxamide, designed using (2S, 5R)-5-((benzyloxy) amino) piperidine-2-carboxylate oxalate as start material, was successfully obtained via multiple synthesis route and finally characterized by IR, 1H NMR, HRMS, and single crystal X-ray crystallography. The title compound was then screened for the in v...

The K-region trans-5,6-dihydrodiols formed in the metabolism of 12-methylbenz[a]anthracene (12-MBA) by liver microsomal preparations from untreated, phenobarbital-treated and 3-methylcholanthrene-treated male Sprague-Dawley rats were found by chiral stationary-phase h.p.l.c. (c.s.p.-h.p.l.c.) analyses to contain (5S,6S)/(5R,6R) enantiomer ratios of 93:7, 88:12 and 97:3 respectively. The absolut...