Zobrazeno 1 - 8
of 8
pro vyhledávání: '"M Katarina Penov-Gasi"'
Autor:
Mihalj Poša, Mihály Szécsi, M Katarina Penov-Gasi, Vesna Kojić, Suzana Jovanović-Šanta, N Marija Sakac, P Marina Savic, M Aleksandar Okljesa, A Evgenija Djurendic
Publikováno v:
Acta Periodica Technologica, Vol 2014, Iss 45, Pp 173-189 (2014)
A simple synthesis of mono- and bis-salicylic acid derivatives 1-10 by the transesterification of methyl salicylate (methyl 2-hydroxybenzoate) with 3-oxapentane-1,5-diol, 3,6- dioxaoctane-1,8-diol, 3,6,9-trioxaundecane-1,11-diol, propane-1,2-diol or
Autor:
A Evgenija Djurendic, M Katarina Penov-Gasi, N Marija Sakac, S Dimitar Jakimov, P Marina Savic
Publikováno v:
Acta Periodica Technologica, Vol 2013, Iss 44, Pp 289-300 (2013)
Acta periodica technologica (2013) (44):289-300
Acta periodica technologica (2013) (44):289-300
An efficient synthesis of several A- and B-modified D-homo lactone androstane derivatives from 3β-hydroxy-17-oxa-D-homoandrost-5-en-16-one (1) is reported. 17-Oxa-Dhomoandrost- 4-ene-3,16-dione (2), obtained by the Oppenauer oxidation of compound 1,
Autor:
N Marija Sakac, M Katarina Penov-Gasi, A Evgenija Djurendic, R Andrea Gakovic, Maja Djurendic-Brenesel Dj.
Publikováno v:
Hemijska Industrija, Vol 64, Iss 2, Pp 81-84 (2010)
Starting from 3?-acetoxy-17-oxo-16,17-secoandrost-5-ene-16-nitrile (1), 3?-acetoxy-16,17-secoandrost-5-ene-16-nitrile (4) was synthesized by a three-stage procedure. First, the formyl group of compound 1 was reduced, to yield the alcohol 2. Compound
Autor:
M Stanko Cvjeticanin, M Gordana Bogdanovic, A Evgenija Djurendic, N Ksenija Kuhajda, N Marija Sakac, M Katarina Penov-Gasi, Vesna Kojić
Publikováno v:
Hemijska Industrija, Vol 63, Iss 4, Pp 313-318 (2009)
The new conjugates of selected bile acids (hyocholic (2), deoxycholic (3), hyodeoxycholic (4) and 12-ketocholic (5) acids) with ethyl 11-aminoundecanoate 7, 8, 11, and 13 were synthesized. The conjugation reaction was carried out in ethyl acetate in
Autor:
N Marija Sakac, Suzana Jovanović-Šanta, M Katarina Penov-Gasi, A Julijana Petrovic, M Vjera Pejanovic
Publikováno v:
Acta Periodica Technologica, Vol 2004, Iss 35, Pp 225-230 (2004)
In this paper two synthetic routes for obtaining D-homo-D-aza estratriene derivatives were described. Namely, starting from 3-methoxyestra-1,3,5(10)-trien-16-oximino-17-one (1) 3-methoxy-17-aza-D-homoestra-1,3,5(10)-triene (5) was synthesized in two
Autor:
M Stanko Cvjeticanin, A Evgenija Djurendic, D Ljubica Medic-Mijacevic, N Ksenija Kuhajda, M Katarina Penov-Gasi, M Vjera Pejanovic, N Marija Sakac
Publikováno v:
Acta Periodica Technologica, Vol 2003, Iss 34, Pp 111-118 (2003)
The multistage syntheses of the p-toluenesulphonyloxy esters (1-benzyloxy-4-p-toluenesulphonyloxybutane (3a) 1-benzyloxy-6-p-toluenesulphonyloxyhexane (3b) and 1-benzyloxy-10-p-toluenesulphonyloxydecane (3c)(, alkyl chlorides (1-benzyloxy-4-chlorobut
Autor:
Z Srdjan Stojanovic, M Katarina Penov-Gasi, N Marija Sakac, A Evgenija Djurendic, Slobodanka Stanković, Mirjana Popsavin, Suzana Jovanović-Šanta, L Nebojsa Andric
Publikováno v:
Journal of the Serbian Chemical Society, Vol 68, Iss 10, Pp 707-714 (2003)
Starting from 3?-acetoxy-15-cyano-17-oxo-16,17-seco-5-androstene (2) and 3?-acetoxy- 15-cyano-17-hydroxy-17-methyl-16,17-seco-5-androstene (11), new 17-halo-derivatives (5?10 and 13) were obtained. The fluoro derivative 5 was obtained from 17-tosylat
Autor:
A Evgenija Djurendic, Teréziám Surányi, M Mirjana Popsavesé, Gyöngyi Vastag Gy., M Katarina Penov-Gasi
Publikováno v:
Journal of the Serbian Chemical Society, Vol 65, Iss 10, Pp 681-689 (2000)
Several bis- and mono-2-hydroxybenzoic acid derivatives were synthesized by the reaction of methyl 2-hydroxybenzoate with some alcohols (diols, polyols and amino alcohols) and their acidity constants were determined in 60% aqueous ethanol by the pote