Search Results - "Krstic, Natalija M"

New androst-4-en-17-spiro-1,3,2-oxathiaphospholanes. Synthesis, assignment of absolute configuration and in vitro cytotoxic and antimicrobial activities by Krstić, Natalija M., Bjelaković, Mira S., Pavlović, Vladimir D., Robeyns, Koen, Juranić, Zorica D., Matić, Ivana, Novaković, Irena, Sladić, Dušan M.

“…[Display omitted] ► Simple syntheses of the new androst-4-en-17-spiro-1,3,2-oxathiaphospholanes. ► The structures and absolute configurations were determined…”
Get full text

Synthesis, characterization and biological activity of Pt(II) complexes with steroidal thiosemicarbazones by Cobeljic, Bozidar, Zivkovic, Marijana, Matic, Ivana, Novakovic, Irena, Sladic, Dusan, Andjelkovic, Katarina, Krstic, Natalija

“…In this work, Pt(II) complexes of previously synthesized steroidal thiosemicarbazones were synthesized and characterized. The ligands and their metal complexes…”
Get full text

Oxidative 10-membered ring expansion and contraction of stereoisomeric 1(10)-unsaturated and 1,10-epoxy-5-oxo-5,10-secosteroids induced by peracids by Bjelaković, Mira S., Krstić, Natalija M., Milić, Dragana R., Kop, Tatjana J., Robeyns, Koen, Pavlović, Vladimir D.

“…The present study is concerned with the oxidative behaviour of unsaturated and epoxy 5-oxo-5,10-secosteroids in the presence of m-CPBA or TFAA-UHP as oxidants…”
Get full text

5,10:13,14-Disecosteroids: novel modified steroids containing 10- and 9-membered rings by Bjelaković, Mira S., Krstić, Natalija M., Todorović, Nina, Krunić, Aleksej, Tinant, Bernard, Dabović, Milan M., Pavlović, Vladimir D.

“…In this paper a synthetic pathway to the modified 5,10:13,14-bisfragmentation cholestane derivatives 8– 14 is described. The synthesis involves introduction of…”
Get full text

Steroid dimers-in vitro cytotoxic and antimicrobial activities by Krstic, Natalija M, Matic, Ivana Z, Juranic, Zorica D, Novakovic, Irena T, Sladic, Dusan M

“…The in vitro cytotoxic activity of previously synthesized steroid dimers with different spacer group (sulfide, trithiolane ring or phosphorotrithioate) and the…”
Get full text

Anticancer potential of new steroidal thiazolidin-4-one derivatives. Mechanisms of cytotoxic action and effects on angiogenesis in vitro by Živkovic, Marijana B, Matic, Ivana Z, Rodic, Marko V, Novakovic, Irena T, Krivokuca, Ana M, Sladic, Dušan M, Krstic, Natalija M

“…•The synthesis of new steroidal mono- and bis(thiazolidin-4-ones) was performed.•Pro-apoptotic action of 4a and 5a on HeLa cells.•Apoptosis in HeLa cells…”
Get full text

Synthesis of some steroidal oximes, lactams, thiolactams and their antitumor activities by KRSTIC, Natalija M, BJELAKOVIC, Mira S, ZIZZAK, Zeljko, PAVLOVIC, Mirjana D, JURANIC, Zorica D, PAVLOVIC, Vladimir D

“…The antiproliferative activity of previously synthesized ( Z)-cholest-4-en-6-one oxime ( 1), ( E)-cholest-4-en-6-one oxime ( 2), 7-aza-B-homocholest-4-en-6-one…”
Get full text

Thionation of some alpha,beta-unsaturated steroidal ketones by Krstić, Natalija M, Bjelaković, Mira S, Dabović, Milan M, Pavlović, Vladimir D

“…The reactions of selected alpha,beta-unsaturated steroidal ketones with Lawesson's reagent (LR) in CH(2)Cl(2) and toluene under the standard reaction…”
Get full text

Synthesis, characterization and biological evaluation of some novel P-heterocyclic androst-4-ene derivatives by Krstic, Natalija M, Pavlovic, Vladimir D, Novakovic, Irena T, Matic, Ivana Z, Sladic, Dusan M

“…The reactions of 21-hydroxyprogesterone with Lawesson’s reagent in toluene or CH 2 Cl 2 gave four P-heterocyclic androst-4-ene derivatives (two tautomeric…”
Get full text

Synthesis and preliminary screening for the biological activity of some steroidal Δ4-unsaturated semicarbazone derivatives by Živković, Marijana B., Novaković, Irena T., Matić, Ivana Z., Sladić, Dušan M., Krstić, Natalija M.

“…•The synthesis of new steroidal mono- and bis(semicarbazones) was performed.•The new carbazate esters were obtained.•The structures were determined by IR, NMR,…”
Get full text

Steroid template associated peptides: design, synthesis and 2D NMR characterization of a novel protected 18-Phe,19-Gly-containing steroidal compound by Bjelaković, Mira S., Krstić, Natalija M., Juranić, Nenad, Dabović, Milan M., Gojković, Svetislav V., Kessler, Martin, Kalvoda, Jaroslav, Pavlović, Vladimir D.

“…We report herein the synthesis of a novel modified steroid with two rigidly positioned amino acids in C- and N-protected forms (Gly–O t Bu and N-Fmoc– l-Phe)…”
Get full text

Conformations of the Nine-Membered Ring in the B-Nor-5,10-secosteroids. X-Ray and NMR Analysis by Bjelaković, Mira S., Krstić, Natalija M., Tinant, Bernard, Kalvoda, Jaroslav, Csanadi, Janos, Pavlović, Vladimir D.

“…The conformations of (Z)‐ and (E)‐5‐oxo‐B‐nor‐5,10‐secocholest‐1(10)‐en‐3β‐yl acetates (2 and 3, resp.) were examined by a combination of X‐ray…”
Get full text

Photochemical and Beckmann rearrangement of (Z)-cholest-4-en-6-one oxime by Krstić Natalija M., Bjelaković Mira S., Dabović Milan M., Lorenc Ljubinka B., Pavlović Vladimir D.

“…Beckmann rearrangement of (Z)-cholest-4-en-6-one oxime (4) (prepared in 4 steps starting from cholest-5-en-3β-ol ο1)) with thionyl chloride in dioxane solution…”
Get full text

Thionation of Some [alpha],[beta]-Unsaturated Steroidal Ketones by Krstic, Natalija M, Bjelakovic, Mira S, Dabovic, Milan M, Pavlovic, Vladimir D

“…The reactions of selected α,β-unsaturated steroidal ketones with Lawesson's reagent (LR) in CH2Cl2 and toluene under the standard reaction conditions and with…”
Get full text

Synthesis and preliminary screening for the biological activity of some steroidal Δ 4 -unsaturated semicarbazone derivatives by Živković, Marijana B, Novaković, Irena T, Matić, Ivana Z, Sladić, Dušan M, Krstić, Natalija M

“…Eleven new steroidal mono- and bis(semicarbazones) 2a-e, 4d and 3a-e have been prepared starting from various 3-oxo-α,β-unsaturated steroids…”
Get full text

Photochemical and Beckmann rearrangement of (Z)-cholest-4-en-6-one oxime by VLADIMIR D. PAVLOVIC, LJUBINKA B. LORENC, MILAN M. DABOVIC, MIRA S. BJELAKOVIC, NATALIJA M. KRSTIC

“…Beckmann rearrangement of (Z)-cholest-4-en-6-one oxime (4) (prepared in 4 steps starting from cholest-5-en-3b-ol (1)) with thionyl chloride in dioxane solution…”
Get full text

Oxidative fragmentations of 5-hydroxy-1-oxo-5alpha-cholestan-3beta-yl acetate by NATALIJA M. KRSTIC, MIRA S. BJELAKOVIC, LJUBINKA B. LORENC, VLADIMIR D. PAVLOVIC

“…5-Hydroxy-1-oxo-5a-cholestan-3b-yl acetate (11) was prepared in 5 steps starting from (E)-3b-acetoxy-5,10-seco-1(10)-cholesten-5-one (6). Treatment of the…”
Get full text

Peracids oxidation of cholesta-5,8-dien-3β-yl acetate by Dabović Milan M., Petrović Ivanka J., Krstić Natalija M., Lorenc Ljubinka B.

“…Expoxidation of cholesta-5,8-dien-3β-yl acetate (1) with peracids takes place preferentially at the more highly substituted Δ8-olefinic double bond to give:…”
Get full text

Peracids oxidation of cholesta-5,8-dien-3b-yl acetate by LJUBINKA B. LORENC, NATALIJA M. KRSTIC, IVANKA J. PETROVIC, MILAN M. DABOVIC

“…Expoxidation of cholesta-5,8-dien-3b-yl acetate (1) with peracids takes place preferentially at the more highly substituted D8-olefinic double bond to give:…”
Get full text

Oxidative fragmentation of 5-hydroxy-1-oxo-5α-cholestan-3β-yl acetate by Krstić Natalija M., Bjelaković Mira S., Lorenc Ljubinka B., Pavlović Vladimir D.

“…5-hydroxy-1-oxo-5α-cholestan-3β-yl acetate (11) was prepared in 5 steps starting from (E)-3β-acetoxy-5,10-seco-1(10)-cholesten-5-one (6). Treatment of the…”
Get full text