Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Petr Olšovský"'
Autor:
Martin Rejzek, Jiří Klinot, Jitka Cermakova, Václav Křeček, Eva Klinotová, Petr Olšovský, Jan Sejbal
Publikováno v:
Collection of Czechoslovak Chemical Communications. 64:329-347
Depending on the conditions and the acid employed, 18β,19β-epoxy-28-hydroxy- 21-oxolupan-3β-yl acetate (2a) and 18β,19β-epoxy-21-oxolupane-3β,28-diyl diacetate (2b) on treatment with acid gave three types of products: (i) 28-nor derivatives: 21
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a63e8a5d6bc7128ced32dc4c75037c97
https://doi.org/10.1135/cccc19990329
https://doi.org/10.1135/cccc19990329
Autor:
Vladimír Křen, Petr Sedmera, Petr Olšovský, Erik De Clecq, Vladimír Havlíček, Myriam Witvrouw
Publikováno v:
Tetrahedron. 53:4503-4510
N-Deoxyribosides of agroclavine (1), lysergol (2), and 9,10-dihydrolysergol (3) were prepared by SnCl4 -catalyzed N-glycosylation of their TMS derivatives with 1-chloro-3,5-di-O-toluoyl-2-deoxy-D-ribofuranose. None of the new compounds exhibited acti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2152b9d4a7f009dc2b4e92a5172b6a63
https://doi.org/10.1016/s0040-4020(97)00123-3
https://doi.org/10.1016/s0040-4020(97)00123-3
Publikováno v:
Biotechnology Letters. 17:1219-1222
Short incubation (1 – 5 h) of aromatic dinitriles with resting cells of Rhodococcus equi A4 produces the corresponding cyano amides in 48 – 81% yield. The substrate reactivity decreases in order 1,4- ≥ 1,3- > 1,2-disubstitution. Prolonged treat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2d5f21a6d3ff0aa21ce2c4c549c5e65
https://doi.org/10.1007/bf00128389
https://doi.org/10.1007/bf00128389
Publikováno v:
Collection of Czechoslovak Chemical Communications. 56:966-972
Infrared spectra of triterpenoid 19β,28-epoxy-18α-oleanane 3-ketones I - VI in the region of carbonyl stretching frequencies have been studied. Comparison of the spectra of crystals with those of solutions in various solvents, together with compari
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20fb1256771995c8574bbc9fef48acd1
https://doi.org/10.1135/cccc19910966
https://doi.org/10.1135/cccc19910966
Autor:
J Ulrichová, Ludmila Martínková, B Ríhová, O Hovorka, Petr Olšovský, D Veselý, P Patáková-Jůzlová, V. Prikrylova, V Krent, Z Kucerová, Vladimír Havlíček, D Veselá
Publikováno v:
Food additives and contaminants. 16(1)
Rubropunctatin (1), monascorubrin (2), monascin (3) and ankaflavin (4) were purified from the mycelium of Monascus purpureus by flash chromatography on silica gel or reversed phase. Their embryotoxicity towards chicken embryos decreased in the order
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f9ecc89a67a6d7685457b733921430d
https://pubmed.ncbi.nlm.nih.gov/11565571
https://pubmed.ncbi.nlm.nih.gov/11565571