Zobrazeno 1 - 10
of 10
pro vyhledávání: '"VERA CIRIN-NOVTA"'
Autor:
SLAVKO KEVRESAN, BRANISLAV KOVACEVIC, VERA CIRIN–NOVTA, KSENIJA KUHAJDA, JULIJAN KANDRAC, KSENIJA PAVLOVIC, LJUBICA GRBOVIC
Publikováno v:
Journal of the Serbian Chemical Society, Vol 72, Iss 10, Pp 953-959 (2007)
Naphthenic acids were isolated from gas oil fractions (distillation interval 168–290 °C) of Vojvodina crude oil “Velebit”, characterized and their biological activity evaluated by the biochemical changes in cuttings of Robinia pseudoacacia a
Externí odkaz:
https://doaj.org/article/0a02f502481d48ab9e4085956b853c9d
Autor:
VERA CIRIN-NOVTA, KSENIJA KUHAJDA, SLAVKO KEVRESAN, JULIJAN KANDRA, LJUBICA GRBOVIC, DJURA VUJIC
Publikováno v:
Journal of the Serbian Chemical Society, Vol 71, Iss 12, Pp 1263-1268 (2006)
The synthesis of esters of natural petroleum acids of the naphthenic type assisted with microwave irradiation under the conditions of acid catalysis was carried out with various alcohols: methanol, ethanol, n-butanol and tert-butyl alcohol. Microwave
Externí odkaz:
https://doaj.org/article/682d66f6b52546c5a5e080c37ea9a39e
Publikováno v:
Journal of the Serbian Chemical Society, Vol 69, Iss 2, Pp 117-122 (2004)
2,5:4,6-Dianhydro-3-O-p-toluenesulfonyl-L-idose ethylene acetal (4) was synthesized with the aim of studying its chemical behaviour in the presence of several basic agents (Bu4NF/MeCN, NaOMe/MeOH, KOBut/ButOH/THF, and NaH/DMSO). Treatment of 4 with s
Externí odkaz:
https://doaj.org/article/e2f57911d594471e8a63e857b4369db2
Publikováno v:
Journal of the Serbian Chemical Society, Vol 69, Iss 5, Pp 349-351 (2004)
A novel multi-step synthesis of 3a,12a-dihydroxy-23a,23b-dihomo-5b-cholan-24-oic acid (23a,23b-dihomodeoxycholic acid) (5) has been achieved from methyl 3a,12a-dihydroxy-5b-cholanoate (1). Reduction of compound 1 with LiAlH4 in dry ether gave the cor
Externí odkaz:
https://doaj.org/article/2c19177d796441e9a05452f372e53813
Autor:
M Ljubica Grbovic, A Petar Rodic, E Slavko Kevresan, S Vera Cirin-Novta, N Ksenija Kuhajda, E Julijan Kandrac
Publikováno v:
Acta Periodica Technologica, Vol 2004, Iss 35, Pp 87-94 (2004)
The investigated petroleum acids have been isolated from middle oil fractions (b.p. 270-380?C) of Vojvodina crude oil "Kelebija." Group-structural analysis was performed with low resolution mass spectrometry using Field Ionization and Chemical Ioniza
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0579fcfecef9b3b4b647fbae32d5fec9
https://doi.org/10.2298/apt0435087c
https://doi.org/10.2298/apt0435087c
Publikováno v:
Journal of the Serbian Chemical Society, Vol 69, Iss 2, Pp 117-122 (2004)
2,5:4,6-Dianhydro-3-O-p-toluenesulfonyl-L-idose ethylene acetal (4) was synthesized with the aim of studying its chemical behaviour in the presence of several basic agents (Bu4NF/MeCN, NaOMe/MeOH, KOBut/ButOH/THF, and NaH/DMSO). Treatment of 4 with s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08af540d55e321cf0d8dda46663c65ed
https://doi.org/10.2298/jsc0402117p
https://doi.org/10.2298/jsc0402117p
Autor:
E Julijan Kandrac, S Vera Cirin-Novta, M Dragana Vasic, M Novica Petrovic, E Slavko Kevresan, M Ljubica Radic, N Ksenija Kuhajda
Publikováno v:
Helia
SUMMARY The paper describes a study of the effect of salts of natural naphthenic acids on the rooting of young sunflower cuttings and latteral branching of interspecies sunflower hybrids. Naphthenic acids were obtained by alkaline extraction from atm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8c1a5b1c880eac318e196757a777507
https://doi.org/10.2298/hel0339075k
https://doi.org/10.2298/hel0339075k
Autor:
A Petar Rodic, E Julijan Kandrac, E Slavko Kevresan, M Ljubica Radic, N Ksenija Kuhajda, S Vera Cirin-Novta
Publikováno v:
Acta Periodica Technologica, Vol 2003, Iss 34, Pp 49-54 (2003)
Petroleum acids can be obtained from oil and oil derivatives by alkaline extraction. The aim of this work was to optimize the process of alkaline extraction of petroleum acids from light commercial oil fractions of Vojvodina "Velebit" oil by changing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d7aaa4ed77a8e104aedb07e393ebad8
https://doi.org/10.2298/apt0334049c
https://doi.org/10.2298/apt0334049c
Publikováno v:
Acta Periodica Technologica, Vol 2002, Iss 33, Pp 135-142 (2002)
Natural petroleum acids of naphthenic type such as carboxylic acids from petroleum basins of Vojvodina are interesting because of diverse possibilities for their use, most importantly for their biological activity and the potential use as plant growt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29cb196b76455cd742a6033d0feafc39
http://www.doiserbia.nb.rs/img/doi/1450-7188/2002/1450-71880233135C.pdf
http://www.doiserbia.nb.rs/img/doi/1450-7188/2002/1450-71880233135C.pdf
Publikováno v:
Scopus-Elsevier
Journal of the Serbian Chemical Society, Vol 69, Iss 2, Pp 117-122 (2004)
Journal of the Serbian Chemical Society, Vol 69, Iss 2, Pp 117-122 (2004)
2,5:4,6-Dianhydro-3-O-p-toluenesulfonyl-L-idose ethylene acetal (4) was synthesized with the aim of studying its chemical behaviour in the presence of several basic agents (Bu4NF/MeCN, NaOMe/MeOH, KOBut/ButOH/THF, and NaH/DMSO). Treatment of 4 with s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::9c2aea9323ae594b3a5c63bfc732ef6a
http://www.scopus.com/inward/record.url?eid=2-s2.0-1442275548&partnerID=MN8TOARS
http://www.scopus.com/inward/record.url?eid=2-s2.0-1442275548&partnerID=MN8TOARS
