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  • Inorganic Chemistry  (2)
  • 5,5-Dimethyl-6-methylenebicyclo[2.2.1]hept-2-ene  (1)
  • Key words Abdominal aortic aneurysm  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Synthesen in der Isocamphanreihe, 39. Mitt.: Verbesserung derDiels-Alder-Reaktion von Cyclopentadien mit Mesityloxid durch Ultraschall und eine neue Synthese von Dehydrocamphen (1994)
    Springer
    Monatshefte für Chemie 125 (1994), S. 921-925 
    Details
    ISSN: 1434-4475
    Keywords: 2-Acetyl-3,3-dimethylbicyclo[2.2.1]hept-5-ene ; Camphene ; 5,5-Dimethyl-6-methylenebicyclo[2.2.1]hept-2-ene ; Isocamphane derivatives ; Isocamphodiene ; Norborn-5-ene derivatives ; Odour ; Sonification ; Ultrasound chemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The synthesis of the valuable terpenic synthon 2-acetyl-3,3-dimethylbicyclo[2.2.1]hept-5-ene is clearly improved concerning the yield and especially the reaction time by applying ultrasound on theDiels-Alder reaction of cyclopentadiene with mesityl oxide. A new synthesis of dehydrocamphene and its odour impression is described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00812706
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  • 2
    Electronic Resource
    Electronic Resource
    Mixed agonistic-antagonistic cytokine response in whole blood from patients undergoing abdominal aortic aneurysm repair (1999)
    Springer
    Intensive care medicine 25 (1999), S. 279-287 
    Details
    ISSN: 1432-1238
    Keywords: Key words Abdominal aortic aneurysm ; Cytokines ; Systemic inflammatory response syndrome ; Ischemia-reperfusion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: To characterize the impact of abdominal aortic aneurysm repair (AAAR) on spontaneous as well as lipopolysaccharide (LPS)-induced gene expression of pro- and anti-inflammatory cytokines. Design: Prospective, controlled in vivo / ex vivo study. Setting: University hospital. Patients and interventions: Whole blood from 14 consecutive patients undergoing AAAR withdrawn prior to surgery (T1), at the end of ischemia (T2), 90 min after declamping (T3) and on the first postoperative day (T4) was cultured in the absence or presence of LPS. Five patients undergoing elective inguinal hernia repair served as controls. Measurements and results: While tumor necrosis factor (TNF), Interleukin (IL)-1 and IL-10 plasma concentrations did not increase significantly, IL-6 was elevated at each time point, as compared with T1. Despite the spontaneous release of trace amounts of IL-6, the ability of cultured whole blood to mount a cytokine response in vitro to LPS was impaired for all cytokines studied at T2 (TNF –62 %, IL-1 –51 %, IL-6 –20 %, IL-10 –51 %). The stimulated IL-6 response was restored early after declamping (T3: + 56 %) and enhanced 1 day after operation (T4: + 144 %). In contrast, stimulated TNF and IL-1 responses remained depressed at T3 (TNF –48 %, IL-1 –64 %) and T4 (TNF –40 %, IL-1 –24 %). A biphasic pattern was observed for IL-10 with initial depression at T3 (-51 %) and restoration at T4 ( + 40 %). Among the different cytokines monitored, only impaired TNF responsiveness at early reperfusion (T3) correlated with the postoperative course, as reflected by APACHE II. Cytokine response to LPS was maintained or even increased during and after surgery in the whole blood from patients undergoing hernia repair. Conclusions: Despite consistent development of clinical signs of systemic inflammatory response syndrome (SIRS) and spontaneous release of IL-6 abdominal aortic aneurysm repair produces a state of impaired pro-inflammatory cytokine response upon a subsequent in vitro Gram-negative stimulus. This early impairment of TNF responsiveness seems to correlate with an unfavorable postoperative course.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001340050836
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  • 3
    Electronic Resource
    Electronic Resource
    Über Metall-Stickoxid-Komplexe. XVI. Über Das komplexchemische Verhalten der Nitrosylnickelhalogenide (1963)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 321 (1963), S. 107-112 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The reaction of tetrameric nitrosylnickel halides with phosphines, arsines, stibines and amines (L) leads to nonpolar dimeric diamagnetic complexes [Ni(NO)(L)hal]2. The cis and trans stereo isomeres were isolated with tricyclohexyl phosphine as a ligand. In a second step of the reaction, the halogenobridges of this compounds are cleaved by addition of a second ligand.
    Notes: Die tetrameren Nitrosylnickelhalogenide [Ni(NO)Halg]4 geben mit Organylen des dreiwertigen Phosphors und seiner Homologen und mit Aminen (L) zunächst dimere diamagnetische, unpolare Komplexe [Ni(NO)(L) Halg]2; mit Tricyclohexylphosphin als Liganden konnten sogar die beiden cis-trans-Isomeren isoliert werden. Die Halogenobrücken dieser Verbindungen werden im weiteren Reaktionsablauf unter Addition eines zweiten Liganden aufgespalten.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19633210111
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  • 4
    Electronic Resource
    Electronic Resource
    Über Metall-Stickoxid-Komplexe. XIX. Über Nitrosylrhodanide und -mercaptide der Eisemetalle und deren komplexchemisches Verhalten (1965)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 335 (1965), S. 250-257 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Nitrosylthiocyantes of iron, cobalt and nickel are formed by the reaction of metal nitrosyl halides with potassium or silver thiocyanate. Similarly to these compounds, the nitrosylaryl and nitrosylalkyl mercaptides are obtained. They react with tertiary organic phosphines, arsines and stibines (L) as well as with o-phenanthroline (L2) forming the complexes M(NO)2LR (M = Fe, Co; R = NCS, SC6H5, SC2H5), [Ni(NO)LR]2 and Ni(NO)L2R (R = SCN, NCS, SC6H5).
    Notes: Nitrosylrhodanide der Eisenmetalle können durch Umsetzung der entsprechenden Nitrosylhalogenide mit Kalium- bzw. Silberrhodanid dargestellt werden. Auf gleiche Weise erhält man die bereits bekannten Nitrosylaryl- und Nitrosylakylmercaptide dieser Elemente. Das komplexchemische Verhalten dieser Verbindungen schließt sich weitgehend dem der entsprechenden Nitrosylhalogenide an: mit Organylen des Phosphors und seiner Homologen (L) und mit o-Phenanthrolin (L2) entstehen Komplexe der Typen M(NO)2LR (M = Fe, Co; R = NCS, SC6H5, SC2H5), bzw. [Ni(NO)LR]2und Ni(NO)L2R (R = SCN, NCS, SC6H5).
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19653350505
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