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Simple Access (simple + access)
Selected AbstractsSimple Access to the Coronary Venous System for Left Ventricular PacingPACING AND CLINICAL ELECTROPHYSIOLOGY, Issue 9 2003DANY E. SAYAD Implantation of the LV lead for biventricular pacing can be challenging, time consuming, and often requires extensive fluoroscopy time. A conventional diagnostic 5 Fr left Amplatz catheter was used to cannulate the coronary sinus in 15 consecutive patients undergoing implantation of a biventricular pacemaker. When the coronary sinus was cannulated, the proximal end of the Amplatz catheter was cut and the coronary sinus sheath was passed over the Amplatz catheter that was then removed. Coronary sinus cannulation was achieved in all 15 patients with a mean fluoroscopy time of3.34 ± 1.9 minutes. Subsequent implantation of a biventricular pacemaker was successful and free of complications in all the 15 patients. (PACE 2003; 26:1856,1858) [source] ChemInform Abstract: A Simple Access to Symmetric Diarylamines via Copper(II)-Catalyzed Coupling of Aqueous Ammonia with Arylboronic Acids.CHEMINFORM, Issue 47 2009Changfeng Zhou Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] ChemInform Abstract: Mild and Efficient Synthesis of 2-Indole-2,-oxazolines at Room Temperature , A Simple Access to Novel IndOX Ligands.CHEMINFORM, Issue 28 2008Markku J. Oila Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source] Formal Alkyne Insertion into Alkoxycarbene Complexes: Simple Access to Enantiopure Group 6 Alkynyl(alkoxy)carbene Complexes.CHEMINFORM, Issue 49 2005Jose Barluenga Abstract For Abstract see ChemInform Abstract in Full Text. [source] Ring-Opening of Lactones with Enolate Nucleophiles: A Simple Access to Functionalized ,-Ketoesters, ,,,-Diketoesters and ,-Ketosulfoxides.CHEMINFORM, Issue 20 2005Steve Lanners Abstract For Abstract see ChemInform Abstract in Full Text. [source] Hydrolysis of Dinuclear Ruthenium Complexes [{CpRu(PPh3)2}2(,,,1:1 -L)][CF3SO3]2 (L=P4, P4S3): Simple Access to Metal Complexes of P2H4 and PH2SHCHEMISTRY - A EUROPEAN JOURNAL, Issue 23 2007Pierluigi Barbaro Dr. Abstract The reaction of [CpRu(PPh3)2Cl] (1) with half an equivalent of P4 or P4S3 in the presence of AgCF3SO3 as chloride scavenger affords the stable dimetal complexes [{CpRu(PPh3)2}2(,,,1:1 -P4)][CF3SO3]2, 3,CH2Cl2 (2) and [{CpRu(PPh3)2}2(,,,1:1 -Papical -Pbasal -P4S3)][CF3SO3]2, 0.5,C7H8 (3), in which the tetrahedral P4 and mixed-cage P4S3 molecules are respectively bound to two CpRu(PPh3)2 fragments through two phosphorus atoms. The coordinated cage molecules, at variance with the free ligands, readily react with an excess of water in THF under mild conditions. Among the hydrolysis products, the new, remarkably stable complexes [{CpRu(PPh3)2}2(,,,1:1 -P2H4)][CF3SO3]2 (4) and [CpRu(PPh3)2(,1 -PH2SH)]CF3SO3 (8) were isolated. In the former, diphosphane, P2H4, is coordinated to two CpRu(PPh3)2 fragments, and in the latter thiophosphinous acid, H2PSH, is coordinated to the metal centre through the phosphorus atom. All compounds were characterised by elemental analyses and IR and NMR spectroscopy. The crystal structures of 2, 3, 4 and 8 were determined by X-ray diffraction. [source] Enantioselective Benzylic Hydroxylation with Pseudomonas monteilii TA-5: A Simple Method for the Syntheses of (R)-Benzylic Alcohols Containing Reactive Functional GroupsADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 13 2009Yongzheng Chen Abstract Highly enantioselective benzylic hydroxylations of benzene derivatives (1,4) containing reactive functional groups were achieved for the first time with Pseudomonas monteilii TA-5 as biocatalyst, giving the corresponding (R)-benzylic alcohols 5,8 in 93,99% ee as the only products. Preparative biotransformations were demonstrated by the biohydroxylation of 1 and 2 with resting cells of P. monteilii TA-5 to afford (R)- 5 in 94% ee and 66% yield and (R)- 6 in 94% ee and 56% yield, respectively. The highly enantioselective biohydroxylations represent a simple access to (R)-benzylic alcohols containing reactive functional groups that are useful pharmaceutical intermediates and versatile chiral building blocks. [source] Amidrazones as Precursors of Biologically Active Compounds , Synthesis of Diaminopyrazoles for Evaluation of Anticancer ActivityARCHIV DER PHARMAZIE, Issue 1 2006Maria Teresa Cocco Abstract The regioselectivity of coupling phenyl isocyanate to 3-(2-acylhydrazino)-3-aminopropenenitriles and ethyl 3-(2-acylhydrazino)-3-aminopropenoates as simple access to aminopyrazole derivatives, endowed with potential antitumoral activity, is reported. 3-(2-Acylhydrazino)-3-aminopropenenitriles react with phenyl isocyanate to afford 3-amino-3-(2-acylhydrazino)-2-phenylaminocarbonyl-2-propenenitriles. These key intermediates were cyclized into 3,5-diaminopyrazole-4-carboxamide derivatives. Preliminary results of poor antiproliferative activities of these compounds are also reported. [source] | ||||||||||