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  • IR spectroscopy  (1)
  • postcoital contraception  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Dipole moments of the carbonyl groups in cyclic β-diketones from IR spectroscopy data (1995)
    Springer
    Russian chemical bulletin 44 (1995), S. 670-677 
    Details
    ISSN: 1573-9171
    Schlagwort(e): IR spectroscopy ; dipole moments ; coplanar arrangement ; carbonyl groups ; 2-arylindan-1,3-diones
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract The αCO angles between the carbonyl groups and the dipole moments of a number of 2-arylindan-1,3-diones were determined from the data of IR spectroscopy. The effects of substituents on αCO depending on their positions and inductive factors were found. It was established that the interaction between the vibrations of the carbonyl groups depends on both the αCO angle or the ΣμCO dipole moment and the coplanar arrangement of these groups.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00698501
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Mechanism of postcoital contraception with a combination of steroids and the central M-cholinolytic benactyzine (1975)
    Springer
    Bulletin of experimental biology and medicine 80 (1975), S. 1221-1223 
    Details
    ISSN: 1573-8221
    Schlagwort(e): postcoital contraception ; tubal transport ; estrogens ; progestins ; benactyzine
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract Blocking central muscarinic (M-) cholinergic systems with benactyzine facilitates the manifestation of the contraceptive effect of estrogen norsteroids in early pregnancy in rats. This effect is connected with lowering of the gonadotropin level and a change in the ratio between follicle-stimulating and luteinizing hormones, interfering with implantation of the fertilized ovum in the endometrium. The rate of transport of the ovum along the fallopian tube and development of the decidual reaction are also changed. The change in rate of movement of the ovum is not accompanied by any disturbance of fertilization. The substances tested showed no cytotoxic action. The use of mestranol and ethinylestradiol in conjunction with norethinodrel and benactyzine may prove promising as a method of short-term contraception in the postcoital period.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00833167
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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