OBJECTIVE In order to unravel the mechanisms underlying the "sudden" onset of spontaneous absences in genetically prone subjects, we investigated the immediate precursors of spike-wave discharges (SWDs) produced in cortico-thalamo-cortical neuronal networks. METHODS A time-frequency analysis of the cortical and thalamic ECoG of WAG/Rij rats was accomplished with a continuous wavelet decomposi...

Condensation of ferrocene-1,1′-dithiol with PCl3 and P(NMe2)3 gave P-functionalized [3]ferrocenophanes an SPS-ansa-bridge. The P-chloro-derivative exists as a mixture two dynamically exchanging conformers which equilibrate via moderately fast torsional ring-flip process rather than P-inversion.

Ansa-cyclodextrins were obtained in high yields by reaction of sodium sulfide with A,B-di- or A,B,D,E-tetramesylated alpha-CD precursors; the resulting thiocavitands are suitable for forming nanotubular molecules, as well as for hosting metal-organic fragments.

The previously synthesized strained distannadiyl-ansa half-sandwich complex [{κ-SntBu2SntBu2-(η-C5H5)}Ru(CO)2] was investigated with respect to its reactivity toward group 16 elements and bis(tert-butylisonitrile)palladium(0). All products were analyzed by multinuclear NMR spectroscopy, IR spectroscopy and elemental analysis. [{κ-SntBu2SSntBu2-(η-C5H5)}Ru(CO)2] was furthermore characterized by ...

The title complex, dichlorido[N,N-di-methyl-2-(η(5)-tetra-methyl-cyclo-penta-dien-yl)acetamidinido-κN']titanium(IV), [Ti(C(13)H(20)N(2))Cl(2)], exhibits an unusual ansa-bridged conformation. The cyclo-penta-dienyl ring and the mean plane of the Ti-N=C-C-C fragment form a dihedral angle of 88.08 (11)°.

This report deals with the effect of the mode of feeding of the hindgut-fermenting herbivorous rhinoceros on the species of Protozoa fermenting the ingesta, as demonstrated by the proposed three new species of ciliated Protozoa: Didesmis synciliata differing from D. ovalis in having syncilia in place of simple cilia, Blepharoconus dicerotos being twice the size of B. cervicalis, and Blepharosph...

OBJECTIVE The effect of end-to-side neurotization of partially regenerated recipient nerves on improving motor power in late obstetric brachial plexus lesions, so-called nerve augmentation, was investigated. METHODS Eight cases aged 3-7 years were operated upon and followed up for 4 years (C5,6 rupture C7,8 T1 avulsion: 5; C5,6,7,8 rupture T1 avulsion: 1; C5,6,8 T1 rupture C7 avulsion: 1; C5,...

SYNLETT 2005, No. 4, pp 0700–070204.03.2005 Advanced online publication: 22.02.2005 DOI: 10.1055/s-2005-863713; Art ID: Y04404ST © Georg Thieme Verlag Stuttgart · New York Abstract: The total synthesis of smenochromene D, an unusual ansa-terpenoid is described. The synthesis features an unprecedented macrocyclization proceeding through a biomimetic electrocyclization. The enantiomeric relations...

BACKGROUND The study was conducted to evaluate the frequencies of the anatomic variations and the gender distributions of these variations of the pancreatic duct and their relevance with the Cambridge classification system as morphological sign of chronic pancreatitis using magnetic resonance cholangiopancreatography (MRCP). PATIENTS AND METHODS We retrospectively reviewed 1312 consecutive pa...