Diphospho-myo-inositol phosphates (PP-InsP5 and bis-PP-InsP4) were isolated from Dictyostelium in order to clarify the precise positional isomerism by two-dimensional 1H/31P-NMR analysis. The diphosphorylated inositol phosphates are 4-PP-Ins(1,2,3,5,6)P5 and 4,5-bis-PP-Ins(1,2,3,6)P4 or their corresponding enantiomers. The vicinal arrangement of the diphospho groups with its steric and electros...

Total anomalous systemic venous return is a very rare anomaly, where vena cava inferior, vena cava superior, and coronary sinus drain into left atrium. Two-day-old male baby was admitted with cyanosis and tachypnea after the birth. Left atrial isomerism with anomalous systemic venous drainage was found on echocardiographic examination. We present an unusual case of total anomalous systemic veno...

Complex cyanotic congenital heart diseases with left isomerism are sometimes associated with atrioventricular nodal conduction disturbances that may need permanent pacing. Surgical palliation in such anatomy connecting the superior vena cava to the pulmonary artery precludes a transvenous access for an endocardial pacing lead to the ventricles. Epicardial leads in these patients fail if the pac...

The ROCM reactions of exo- and endo-2-cyano-7-oxanorbornenes with allyl alcohol or allyl acetate promoted by different ruthenium alkylidene catalysts were studied. The stereochemical outcome of the reactions was established. The issues concerning chemo- (ROCM vs ROMP), regio- (1-2- vs 1-3-product formation), and stereo- (E/Z isomerism) selectivity of reactions under various conditions are discu...

Extensive bibliography on isomerism of cyanuric acid is presented. Nine possible isomers of cyanuric acid are characterized computationally. The tri-oxo tautomer is by far the most stable isomer of cyanuric acid. The tri-hydroxy form is by more than 100 kJ mol 1 higher in energy than tri-oxo. Cyanuric acid under all experimental conditions exists as tri-oxo tautomer. g r a p h i c a l a b s t r...

We have read with interest the article titled 'Anatomic Twist to a Straightforward Ablation' authored by Mandeep Singh Randhawa et al [1]. A detailed report of a commendable and unique successful Atrio-Ventricular junction ablation for rapid ventricular-rate control in a patient with Atrial Fibrillation in the setting of left atrial isomerism, common atrium and an interrupted infra-hepatic Infe...