Zobrazeno 1 - 10
of 69
pro vyhledávání: '"JAROSLAV KALVODA"'
Autor:
JAROSLAV KALVODA, LJUBINKA B. LORENC, SASA MARTINOVIC, MILAN M. DABOVIC, VLADIMIR D. PAVLOVIC
Publikováno v:
Journal of the Serbian Chemical Society, Vol 69, Iss 11, Pp 861-869 (2004)
In the present paper, the preparation of 3b-hydroxy-17b-dimethyl-tert-butylsilyloxy-5-azaandrostane (15) in fourteen steps is described. B-nor-17-oxoandrost-5-en-3b-yl acetate (1) was used as the starting material, which was transformed to the key in
Externí odkaz:
https://doaj.org/article/8b2eea01e5dd467a844eca90be4fa16c
Autor:
Jaroslav Kalvoda
Publikováno v:
CHIMIA, Vol 55, Iss 12 (2001)
On August 6th, 1901, the Swiss Chemical Society (SCS) was founded as the first independent association of Swiss chemists, to safeguard their professional interests and foster research in all fields of chemistry. From originally some 80 members in 190
Externí odkaz:
https://doaj.org/article/5608afaa5116461dbabd3d4d2f74babe
Autor:
Jaroslav Kalvoda, Jürgen Grob, Klaus Jäkel, Peter Moser, Hermann Fuhrer, Erich G. Weirich, Shantaram J. Yawalkar
Publikováno v:
CHIMIA, Vol 46, Iss 7-8 (1992)
In a rational approach to identify an ultrapotent compound for the treatment of therapy-resistant dermatoses, Weirich's modification of McKenzie's skin vasoconstriction assay (HVK test) has been used as the essential selection criteria. In a primary
Externí odkaz:
https://doaj.org/article/22857eab62444ea9b121858d0b013229
Autor:
Vladimir D. Pavlović, Mira S. Bjelaković, János Csanádi, Bernard Tinant, Jaroslav Kalvoda, Natalija M. Krstić
Publikováno v:
Helvetica Chimica Acta
The conformations of (Z)- and (E)-5-oxo-B-nor-5,10-secocholest-1(10)-en-3 beta-yl acetates (2 and 3, resp.) were examined by a combination of X-ray crystallographic analysis and NMR spectroscopy, with emphasis on the geometry of the cyclononenone moi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df551fb9508c20adfb9750ac76c8aaff
https://doi.org/10.1002/hlca.200590221
https://doi.org/10.1002/hlca.200590221
Autor:
Milan M. Dabović, Jaroslav Kalvoda, B Ljubinka Lorenc, D Vladimir Pavlovic, Saša B. Martinović
Publikováno v:
Journal of the Serbian Chemical Society, Vol 69, Iss 11, Pp 861-869 (2004)
Journal of the Serbian Chemical Society
Journal of the Serbian Chemical Society
In the present paper, the preparation of 3?-hydroxy-17?-dimethyl-tert-butylsilyloxy- 5-azaandrostane (15) in fourteen steps is described. B-nor-17-oxoandrost- 5-en-3?-yl acetate (1)1,2 was used as the starting material, which was transformed to the k
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fb1f15cd7cb781a7e50b36dd1c0ec9b
Autor:
Bernard Tinant, Mira S. Bjelaković, Vladimir D. Pavlović, Jaroslav Kalvoda, Ljubinka Lorenc, Jean-Paul Declercq
Publikováno v:
Helvetica Chimica Acta. 86:2121-2135
Oxidations of 5alpha-hydroxy-B-norcholestan-3beta-yl acetate (8) with Pb(OAc)(4) under thermal or photolytic conditions or in the presence of iodine afforded only complex mixtures of compounds. However, the HgO/I-2 version of the hypoiodite reaction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08cbedb6a1499ea5be88d499cb614876
https://doi.org/10.1002/hlca.200390169
https://doi.org/10.1002/hlca.200390169
Autor:
Marc de Gasparo, U. Joss, Henry Haenni, Hans Peter Ramjoué, Hermann Fuhrer, Hansuli Wehrli, Michel Boillaz, Jaroslav Kalvoda, Julius Schmidlin, Steven Whitebread, Jürgen Grob, Peter Wieland, Grety Rihs
Publikováno v:
Helvetica Chimica Acta. 80:566-585
In the search for aldosterone antagonists with an optimal activity profile, twelve 9α, 11-epoxy-steroids were prepared and compared with their 9α, 11α -unsubstituted analogues in terms of steroid receptor binding in vitro and electrolyte excretion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d21c954fba43ad7e8508f0e1623e1eb
https://doi.org/10.1002/hlca.19970800220
https://doi.org/10.1002/hlca.19970800220
Autor:
Hermann Fuhrer, L. Lorenc, Mihailo Lj. Mihailović, Roland Heckendorn, Jaroslav Kalvoda, Vladimir D. Pavlović
Publikováno v:
Helvetica Chimica Acta. 78:1291-1297
The structures 9 and 8 are proposed for the single isolated irradiation product of 5-oxo-5,10-secocholest-1(10)-en-3α-yl acetate (6) [2] and for the minor product of irradiation of 5-oxo-5,10-secocholest-1(10)-en-3β-yl acetate (1) [3], respectively
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6da5196207615f140db33e943d475295
https://doi.org/10.1002/hlca.19950780519
https://doi.org/10.1002/hlca.19950780519
Autor:
Natalija M. Krstić, Jaroslav Kalvoda, Ljubinka Lorenc, Bernard Tinant, Vladimir D. Pavlović, Jean-Paul Declercq
Publikováno v:
Journal of Chemical Research. 2002:392-394
Ozonolysis of the Δ8(14)-unsaturated steroids 1a,b afforded, instead of the expected 8,14-dioxo-8,14-seco derivatives 2a,b two stereoisomeric Δ7-unsaturated ozonides 3a,b and 4a,b.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d16b461c37374e192ccbed8f6057fcc
https://doi.org/10.3184/030823402103172428
https://doi.org/10.3184/030823402103172428
Autor:
Grety Rihs, Jaroslav Kalvoda, Ivan Earnest, Hans Fritz, Eric Francotte, Manfred Mutter, Christoph Sigel, Fritz Raschdorf, Marcel J. J. Blommers
Publikováno v:
Helvetica Chimica Acta. 76:1539-1563
The 8-amino-5,6,7,8-tetrahydronaphth-2-oic acid (1), 8-(aminomethyl)-5,6,7,8-tetrahydronaphth-2-oic acid (2), and 8-(aminomethyl)naphth-2-oic acid (3) were synthesized in their protected forms as turn-inducing dipeptide mimics.Two of them (2 and 3) w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7d0e652db88ccb610d3062256cca3fe
https://doi.org/10.1002/hlca.19930760414
https://doi.org/10.1002/hlca.19930760414