Diamine bis(phenolate) ligand precursors 6,6'-(2-(dimethylamino)ethylazanediyl) bis(methylene)bis(2,4-di-tert-butylphenol) (H2L, 1) and (S)-6,6'-((1-ethylpyrrolidin-2-yl) methylazanediyl) bis(methylene)-bis(2,4-di-tert-butylphenol) (H2L, 2) were used to prepare titanium and vanadium complexes. The compounds, with formulas [VOL(OPr)] (3), [TiLCl(THF)] (4), [TiLCl]2(μ-O) (5), [TiL(OPr)2] (6) and ...

INTRODUCTION Male infertility factor is defined if the total number of motile spermatozoa (TMSC) < 20 × 10(6)/ejaculated, and unexplained infertility if spermiogram is normal with normal female factor. THE AIM of this study was to determine the predictive value of TMSC for spontaneous pregnancy (ST) and pregnancy after treatment with intrauterine insemination (IUI) in couples with male factor...

Syntheses of neutral halide and aryl vanadium bisimides are described. Treatment of VCl2(NtBu)[NTMS(N(t)Bu)], 2, with PMe3, PEt3, PMe2Ph, or pyridine gave vanadium bisimides via TMSCl elimination in good yield: VCl(PMe3)2(N(t)Bu)2 3, VCl(PEt3)2(N(t)Bu)2 4, VCl(PMe2Ph)2(N(t)Bu)2 5, and VCl(Py)2(N(t)Bu)2 6. The halide series (Cl-I) was synthesized by use of TMSBr and TMSI to give VBr(PMe3)2(N(t)B...

•Expedient assembly of the conidiogenone core via nitrile-assisted TMM diyl cycloaddition•Regio- and diastereoselective decorations D-ring scaffold•Divergent synthesis six (?)-conidiogenones•First total (?)-conidiogenones E, F, 12?-hydroxyconidiogenone C Herein, we constructed fused tetracyclic natural products by single-step tandem cyclizations diazo, allene, olefin moieties in linear precurso...