Synthesis of Substituted 1,3-Propanesultams from N-Substituted 2-Amino Alcohols
In: Synthesis. - Stuttgart [u.a.] : Thieme Vol. 1991, No. 10 (0. 1991), p. 859-860 Zugang:
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1991
Substituted 1,3-propanesultams (isothiazolidine 1,1-dioxides) 3A-C have been prepared via butyllithium-mediated cyclization of the N,O-dimesylates 2A-C of N-substituted 2-amino alcohols 1A-C.. mehr
Synthesis of the four stereoisomers of enprostil
In: The journal of organic chemistry. - [S.l.] : American Chemical Society, ISSN 1520-6904, Vol. 58, No. 16 (1993), p. 4280-4286 Zugang:
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Synthesis of Substituted 1,3-Propanesultams from N-Substituted 2-Amino Alcohols
in: Synthesis. - Stuttgart [u.a.] : Thieme, ISSN 1437-210X, Vol. 1991, No. 10 (1991), p. 859-860 Zugang:
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1991
Substituted 1,3-propanesultams (isothiazolidine 1,1-dioxides) 3A-C have been prepared via butyllithium-mediated cyclization of the N,O-dimesylates 2A-C of N-substituted 2-amino alcohols 1A-C. mehr
Stereoselective synthesis of an important prostaglandin synthetic intermediate
In: The journal of organic chemistry. - [S.l.] : American Chemical Society, ISSN 1520-6904, Vol. 56, No. 3 (1991), p. 1329-1332 Zugang:
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Reaction of 1-chloro-2-alkylcycloalkenes with organolithium reagents. A novel cyclopropanation reaction involving the generation of carbenes from vinyl halides
In: American Chemical Society: Journal of the American Chemical Society. - Washington, DC : American Chemical Society, ISSN 1520-5126, Vol. 102, No. 21 (1980), p. 6519-6526 Zugang:
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Triply convergent synthesis of 15-(phenoxymethyl) and 4,5-allenyl prostaglandins. Preparation of an individual isomer of enprostil
In: The journal of organic chemistry. - [S.l.] : American Chemical Society, ISSN 1520-6904, Vol. 58, No. 14 (1993), p. 3681-3686 Zugang:
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Hydroxypropylation
In: The journal of organic chemistry. - [S.l.] : American Chemical Society, ISSN 1520-6904, Vol. 37, No. 12 (1972), p. 1947-1950 Zugang:
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Enantioselective formation of functionalized 1,3-disubstituted allenes: synthesis of .alpha.-allenic .omega.-carbomethoxy alcohols of high optical purity
In: The journal of organic chemistry. - [S.l.] : American Chemical Society, ISSN 1520-6904, Vol. 56, No. 3 (1991), p. 1083-1088 Zugang:
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Synthesis of peristylane and the acs-(Cs)-C14-tetraquinane, C14-pentaquinane, and norperistylane systems
In: American Chemical Society: Journal of the American Chemical Society. - Washington, DC : American Chemical Society, ISSN 1520-5126, Vol. 99, No. 8 (1977), p. 2751-2767 Zugang:
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Synthesis and antiinflammatory and analgesic activity of 5-aroyl-1,2-dihydro-3H-pyrrolo[1,2-a]pyrrole-1-carboxylic acids. The 6-substituted compounds.
In: Journal of medicinal chemistry. - Easton, Pa. : American Chemical Society, ISSN 1520-4804, Vol. 30, No. 5 (1987), p. 820-823 Zugang:
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The C-32 Triacetyl-L-rhamnose Derivative of Ascomycin: A Potent, Orally Active Macrolactone Immunosuppressant
In: Journal of medicinal chemistry. - Easton, Pa. : American Chemical Society, ISSN 1520-4804, Vol. 38, No. 8 (1995), p. 1255-1258 Zugang:
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Inclusive neutral vector meson production in hadronicZ 0 decays
in: The European physical journal , ISSN 1434-6052, Vol. 56 (4. 1992), p. 521-535 Zugang:
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1992
Abstract Results are reported of a study of neutral vector meson production in multihadronicZ 0 decays in the OPAL experiment at LEP. Pions and kaons have been identified by specific ionisation energy loss andK ± π ∓ andK + K − mass spectra have been fitted, in bins of the scaled momentum... mehr
A measurement of electron production in hadronicZ 0 decays and a determination of $$\Gamma (Z^0 \to b\bar b)$$
in: The European physical journal , ISSN 1434-6052, Vol. 55 (2. 1992), p. 191-207 Zugang:
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1992
Abstract The production rate of electrons with momentump>4 GeV/c and large momentum transverse to the jet containing the electron has been measured in 136000 hadronic decays of theZ 0 recorded with the OPAL detector at LEP in 1990. The dominant source of these electrons is the semileptonic decay... mehr
A global determination of $$\alpha _s (M_{Z^0 } )$$ at LEP
in: The European physical journal , ISSN 1434-6052, Vol. 55 (1. 1992), p. 1-24 Zugang:
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1992
Abstract The value of the strong coupling constant, $$\alpha _s (M_{Z^0 } )$$ , is determined from a study of 15 different observables in hadronicZ 0 and τ decays. The study includes global event shape variables, jet production rates, energy correlations, theZ 0 line shape and decay asymmetries... mehr
Properties of multihadronic events with a final state photon at $$\sqrt s = M_{Z^0 } $$
in: The European physical journal , ISSN 1434-6052, Vol. 54 (2. 1992), p. 193-209 Zugang:
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1992
Abstract The properties of final state photons in multihadronic decays of theZ 0 and those of the recoiling hadronic system are discussed and compared with theoretical expectations. The yield of two and three jet events with final state photons is found to be in good agreement with the... mehr
A study of charged particle multiplicities in hadronic decays of theZ 0
in: The European physical journal , ISSN 1434-6052, Vol. 53 (4. 1992), p. 539-554 Zugang:
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1992
Abstract We present an analysis of multiplicity distributions of charged particles produced inZ 0 hadronic decays. The results are based on the analysis of 82941 events collected within 100 MeV of theZ 0 peak energy with the OPAL detector at LEP. The charged particle multiplicity distribution,... mehr
Measurements of $$B^0 - \bar B^0 $$ mixing, $${{\Gamma (Z^0 \to b\bar b)} \mathord{\left/ {\vphantom {{\Gamma (Z^0 \to b\bar b)} {\Gamma (Z^0 \to hadrons)}}} \right....
in: The European physical journal , ISSN 1434-6052, Vol. 60 (2. 1993), p. 199-216 Zugang:
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1993
Abstract From a sample of about 450 000 hadronicZ 0 decays, measurements of the average $$B^0 - \bar B^0 $$ mixing parameter, χ, the branching fraction ofZ 0 bosons into hadrons containing bottom quarks, $${{\Gamma (Z^0 \to b\bar b)} \mathord{\left/ {\vphantom {{\Gamma (Z^0 \to b\bar b)} {\Gamma... mehr
Measurement of the τ lifetime
in: The European physical journal , ISSN 1434-6052, Vol. 59 (2. 1993), p. 183-194 Zugang:
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1993
Abstract The τ lifetime has been measured with the OPAL detector at LEP, from analyses using the impact parameters in decays to single charged tracks, and the decay lengths from τ decays to three charged tracks. The 1991 sample of approximately 12300 τ-pair events, of which 70% contain silicon... mehr
A determination ofα s( $$M_{Z^0 } $$ ) at LEP using resummed QCD calculations
in: The European physical journal , ISSN 1434-6052, Vol. 59 (1. 1993), p. 1-19 Zugang:
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1993
Abstract The strong coupling constant, αs, has been determined in hadronic decays of theZ 0 resonance, using measurements of seven observables relating to global event shapes, energy correlations and jet rates. The data have been compared with resummed QCD calculations, which are combined with... mehr
Measurement of $$\Gamma ({\rm Z}^0 \to b\bar b)/\Gamma ({\rm Z}^0 \to hadrons)$$ using leptons
in: The European physical journal , ISSN 1434-6052, Vol. 58 (4. 1993), p. 523-539 Zugang:
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1993
Abstract The fraction of $$b\bar b$$ events in hadronicZ 0 decays has been measured from the yield of leptons in the data samples collected by OPAL in 1990 and 1991. A sample enriched in events containing $${\rm Z}^0 \to b\bar b$$ decays was obtained by requiring the presence of an electron or... mehr