401
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Bergman J, Renström L, Sjöberg B. Synthesis of aromatic aldehydes via 2-aryl-n,n'-diacyl-4-imidazolines. Tetrahedron 1980. [DOI: 10.1016/0040-4020(80)80230-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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402
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403
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404
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405
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Bergman J, Engman L. New Synthesis of Diorganyl Selenides and Diorganyl Tellurides from Tetraalkylammonium Borohydrides. SYNTHESIS-STUTTGART 1980. [DOI: 10.1055/s-1980-29126] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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406
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Bergman J, Goonewardena H, Husson HP, Kan SK, Lounasmaa M. A Reinvestigation of Stillwell's Synthesis of 6H-Pyrido[4,3-b]carbazoles. ACTA ACUST UNITED AC 1980. [DOI: 10.3891/acta.chem.scand.34b-0763] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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407
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Bergman J, Egestad B, Ernster L, Halonen P, Glaumann H. A Study of a Condensation Product Obtained from 6-Methyl-3(2H)-benzofuranone and Acetic Anhydride. ACTA ACUST UNITED AC 1980. [DOI: 10.3891/acta.chem.scand.34b-0177] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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408
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409
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Gustafsson JA, Rondahl L, Bergman J. Iodosylbenzene derivatives as oxygen donors in cytochrome P-450 catalyzed steroid hydroxylations. Biochemistry 1979; 18:865-70. [PMID: 420819 DOI: 10.1021/bi00572a020] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The mechanism of cytochrome P-450 catalyzed steroid hydroxylations in rat liver microsomes has been investigated by employing derivatives of iodosylbenzene as oxygen donors. The model steroid substrate androstenedione which was hydroxylated in positions 7 alpha, 6 beta, and 16 alpha was used in reactions supported by NADPH, iodosylbenzene, and iodosylbenzene derivatives. Evidence for cytochrome P-450 involvement in iodosylbenzene-sustained androstenedione hydroxylation included inhibition by substrates and modifiers of cytochrome P-450. The most efficient oxygen donors were (diacetoxyiodo)-2-nitrobenzene greater than (diacetoxyiodo)-2-chlorobenzene greater than 2-nitroiodosylbenzene greater than (dinitratoiodo)-2-nitrobenzene greater than (diacetoxyiodo)benzene greater than (diacetoxyiodo)-2-methoxybenzene greater than 4-(diacetoxyiodo)toluene greater than iodosylbenzene. The capacity of the oxidation agents to serve as oxygen donors in cytochrome P-450 dependent steroid hydroxylation is probably dependent upon several factors such as the tendency of iodosyl compounds to associate, which decreases coordination with the heme iron, the presence of bulky substituents in the 2 position (decreases association), and the presence of electron-withdrawing substituents (tends to decrease coordination with the heme iron). The rates of 7 alpha, 6 beta, and i6 alpha hydroxylation of androstenedione catalyzed by (diacetoxyiodo)-2-nitrobenzene were 108-, 130-, and 167-fold higher, respectively, than the rates of the NADPH-supported reactions. These results strongly suggest that the rate-limiting step in NADPH-sustained cytochrome P-450 catalyzed reactions is the rate of reduction of cytochrome P-450.
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410
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411
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Abstract
A review of the literature which examined the suicide rate among psychiatrists and other doctors was made. Particular attention was given to statistical and methodological problems. Common problems include small research sampling, inappropriate comparisons, lack of controls for age, sex, or other relevant factors, interpolating rates from a level per 10,000 to a level per 100,000, and inclusion of a number of unwarranted assumptions. The review did not find evidence that the suicide rate among psychiatrists is higher compared to the population as a whole; nor is there any evidence that the rates of any medical specialty are above average, controlling for the relevant variables. The materials reviewed included all published studies. In order adequately to assess the suicide rate among psychiatrists, a systematic and extensive study must be made, controlling for the relevant methodological variables.
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412
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Bergman J, Egestad B, Rajapaksa D, Pedersen C, Enzell CR, Reid WW, Yanaihara N, Yanaihara C. An X-Ray Crystal and Molecular Structure Determination of a Benzo[1,2-b:4,5-b']bisbenzofuran Derivative Formed by Base-induced Condensation of 3(2H)-benzofuranone. ACTA ACUST UNITED AC 1979. [DOI: 10.3891/acta.chem.scand.33b-0405] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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413
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Federsel HJ, Bergman J, Stenhede U. Rapid Base Induced Rearrangement of Some Quaterinized Thiazoles to Thietanes. HETEROCYCLES 1979. [DOI: 10.3987/r-1979-06-0751] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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414
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415
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416
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417
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Bergman J, Niedrich H, Ome P. [Comparative study of the action of tachykinin analog peptides on smooth muscles]. ZHURNAL EVOLIUTSIONNOI BIOKHIMII I FIZIOLOGII 1978; 14:19-23. [PMID: 629110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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418
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Bergman J, Carlsson R. Conversion of diindolyl methanes to 3-vinylindoles. A simple synthesis of the indole alkaloid olivacine. Tetrahedron Lett 1978. [DOI: 10.1016/s0040-4039(01)95138-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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419
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Bergman J, Carlsson R, Sjöberg B. The reaction of indole and the indole grignard reagent with phosgene. A facile synthesis of indole-3-carboxylic acid derivatives. J Heterocycl Chem 1977. [DOI: 10.1002/jhet.5570140701] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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420
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421
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Bergman J, Egestad B, Lindström JO. The structure of some indolic constituents in Couroupita Guaianensis Aubl. Tetrahedron Lett 1977. [DOI: 10.1016/s0040-4039(01)83838-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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422
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Gustafsson JA, Bergman J. Iodine- and chlorine-containing oxidation agents as hydroxylating catalysts in cytochrome P-450-dependent fatty acid hydroxylation reactions in rat liver microsomes. FEBS Lett 1976; 70:276-80. [PMID: 992072 DOI: 10.1016/0014-5793(76)80774-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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423
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424
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Bergman J, Carlsson R, Misztal S. The Reaction of Some Indoles and Indolines with 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone. ACTA ACUST UNITED AC 1976. [DOI: 10.3891/acta.chem.scand.30b-0853] [Citation(s) in RCA: 43] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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425
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Bergman J, Gear JR. Synthesis of 1,2,6,7-14C-chelidonic acid. J Labelled Comp Radiopharm 1975. [DOI: 10.1002/jlcr.2590110404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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426
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427
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428
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Bergman J, Carlsson R. Synthesis of 1-(2-ethyl-3-indolyl)-1-(3-pyridyl)ethylene and related ellipticine analogues. J Heterocycl Chem 1972. [DOI: 10.1002/jhet.5570090412] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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429
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Bergman J. [Contribution to the study of post-tetanic hyperpolarization of a bundle of frog nerve fibers]. COMPTES RENDUS HEBDOMADAIRES DES SEANCES DE L'ACADEMIE DES SCIENCES. SERIE D: SCIENCES NATURELLES 1972; 274:1172-4. [PMID: 4624942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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430
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431
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Bergman J, Andersson JE, Sæthre LJ, Näslund M, Svensson S. The Synthesis of Some 3-Indolylvinylene Ketones. ACTA ACUST UNITED AC 1972. [DOI: 10.3891/acta.chem.scand.26-0970] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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432
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Bergman J. The reaction of indole and pyrrole with imidazole-Ac2O-reagents. A novel synthesis of aldehydes. Tetrahedron Lett 1972. [DOI: 10.1016/s0040-4039(01)94411-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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433
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434
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Bergman J, Hedlund K, Rasmussen SE, Svensson S, Koskikallio J, Kachi S. Chlorodeacylation of 3-Acylindoles. ACTA ACUST UNITED AC 1971. [DOI: 10.3891/acta.chem.scand.25-2865] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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435
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Bergman J, Abrahamsson S, Dahlén B. An unexpected spirocyclic product from the reaction of 3-(3-methyl-2-oxobutyl)-3-hydroxyoxindole with thionyl chloride. Tetrahedron 1971. [DOI: 10.1016/s0040-4020(01)91779-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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436
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Bergman J, Holmquist L, Fredlund F, Beronius P, Engebretsen JE, Ehrenberg L. Synthesis of 3-Substituted Indoles Starting from Isatin. ACTA ACUST UNITED AC 1971. [DOI: 10.3891/acta.chem.scand.25-1277] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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437
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Bergman J. Tetracycline and neonatal deformities in fish. N Engl J Med 1970; 282:225. [PMID: 5409819 DOI: 10.1056/nejm197001222820417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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438
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439
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Monties JR, Baille Y, Goudard A, Bergman J, Blanc T, Isman H, Henry E. [Dual right ventricular outflow tract with pulmonary stenosis. Surgical correction]. ANNALES DE CHIRURGIE THORACIQUE ET CARDIO-VASCULAIRE 1969; 8:473-6. [PMID: 5408246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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440
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Bergman J, Persson H, Wetterlin K. 2 new groups of selective stimulants of adrenergic beta-receptors. EXPERIENTIA 1969; 25:899-901. [PMID: 4391906 DOI: 10.1007/bf01898049] [Citation(s) in RCA: 89] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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441
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Bergman J, Malmström F, Blom UÅ, Zaidi NA. Deselenation and the Mass Spectra of 3,3'-Di-indolyl Selenides. ACTA ACUST UNITED AC 1968. [DOI: 10.3891/acta.chem.scand.22-1883] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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442
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Bergman J, Kelstrup E, Larsen B, Haug A, Paasivirta J. A Simple Synthesis of 3-Acetoacetylindoles. ACTA ACUST UNITED AC 1968. [DOI: 10.3891/acta.chem.scand.22-1063] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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443
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Bergman J, Lindgren BO, Svahn CM, Mellander O, Hinton M. Triterpenes and 4alpha-Methylsterols in Birch Wood. ACTA ACUST UNITED AC 1965. [DOI: 10.3891/acta.chem.scand.19-1661] [Citation(s) in RCA: 55] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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