For the synthesis of m-sulfamoylbenzamide analogues, small molecules which are known for their bioactivity, a chemoselective procedure has been developed starting from m-(chlorosulfonyl)benzoyl chloride. Although a chemoselective process in batch was already reported, a continuous-flow process reveals an increased selectivity at higher temperatures and without catalysts. In total, 15 analogues ...

Based on weighted noncrossing partitions of type B, we obtain type B analogues of Coker’s identities on the Narayana polynomials. A parity reversing involution is given for the alternating sum of Narayana numbers of type B. Moreover, we find type B analogues of the refinements of Coker’s identities due to Chen, Deutsch and Elizalde. By combinatorial constructions, we provide type B analogues of...

We tested various thymidine analogues for induction of a senescence-like phenomenon in HeLa cells. CldU, BrdU, and IdU similarly induced the morphology of senescent cells and typical senescence markers. Thymidine analogues other than 5-halogenated forms caused only cell death. BrdU efficiently killed the cells in cooperation with irradiation with light and a brief treatment with Hoechst 33258, ...

The second-generation synthesis of 3'-hydroxypacidamycin D (2) has been accomplished via an Ugi-four component reaction at a late stage of the synthesis. This approach provided ready access to a range of analogues including diastereomers of the diaminobutylic acid residue and hybrid-type analogues of mureidomycins. Biological evaluations of these analogues indicated that the stereochemistry at ...

Co(II) and Cu(II) promoted base hydrolysis of 2-cyano, 1, lO-phenanthroline was studied. At 298.2°K, Cu(II) reaction is more efficient (by a factor of 20) than either Co(ll) and its analogues Ni(II) in promoting base hydrolysis.

Melanocortin-1 (MC1) receptor is an attractive melanoma-specific target over-expressed on the surface of melanoma cells. Alpha-melanocyte stimulating hormone (alpha-MSH) peptide analogues can specifically bind MC1 receptors with nanomolar binding affinities, making alpha-MSH peptide analogues very promising candidates for developing effective melanoma-specific imaging probes. This review highli...

Postglycosylation acetylation of sialic acid imparts unique roles to sialoglycoconjugates in mammalian immune response making structural and functional understanding of these analogues important. Five partially O-acetylated Neu5Ac analogues have been synthesized. Reaction of per-O-silylated Neu5Ac ester with AcOH and Ac2O in pyridine promotes regioselective silyl ether/acetate exchange in the f...

Four conformationally restricted analogues of pentamidine were prepared. Then, different concentrations (0.039, 0.078, 0.156, 0.312 and 0.625 mg/mL) of each compound and two positive controls (amphotericin B and pentamidine, 0.625 mg/mL), one negative control (culture medium) and one solvent control (DMSO) were prepared and placed in 24-well plates containing 50000 parasite per well. Promastigo...