Identifikacija i sinteza odabranih sastojaka voskova biljnih vrsta Prima veris L., Primula acaulis(L.) L. (Primulaceae) I Liriodendron tulipifera L. (Magnoliaceae)
Докторанд
Živković Stošić, MilenaМентор
Radulović, NikoЧланови комисије
Stojanović, GordanaZlatković, Bojan
Genčić, Marija S.
Dekić, Milan S.
Метаподаци
Приказ свих података о дисертацијиСажетак
This doctoral dissertation presents the chemical composition of the
washings of Primula veris L., Primula acaulis (L.) L. and
Liriodendron tulipifera L. The studied Primula species were rich in
long-chain branched alkanes. For the first time, 19 new long-chain n-,
iso-, and anteiso-benzyl alkanoates, as well as 8 iso- and 6 anteiso-2-
alkanones were identified in samples of natural origin. Evennumbered
iso-alkanes and 2-alkanones, and iso-odd-numbered fatty
acid benzyl esters, are unique for Primula spp. Washings of P. veris
contained new: 16 syn-1-phenylalkane-1,3-diyl diacetates, 7 3-oxo-1-
phenylalkan-1-yl acetates, 8 1-phenylalkane-1,3-diones, and 10 1-
Hydroxy-1-phenylalkan-3-ones, with n-, iso- and anteiso-chaintermini.
Also, 79 n-, iso-, and anteiso-sec-alcohols were identified (66
new), and 77 long-chain n-, iso-, anteiso-, 2-methyl-, and 3-
methylfatty acids. All long-chain 2-methyl- and 3-methyl acids were
found in the Plant Kingdom for the first time. Benzyl esters lower the...
wax melting point, which increases the permeability of the cuticle,
and reduce the harmful effects of UV-C radiation. Washings of L.
tulipifera flowers, among the most abundant palmitone, contained nalkanes,
(E)-n-alkenes, regioisomeric alk(en)als, alkanones, and (Z)-
alk(en)-1-ols. Double bond regiochemistry was inferred from DMDS
adducts MS. Where possible, the configuration was inferred from the
NMR analysis of cyclopropanation adducts. 10/11-Hydroxy-16-
hentriacontanones were identified based on the analysis of
trimethylsilyl derivatives of hydroxy-ketone and bis(trimethylsilyl)
derivatives of hentriacontanediols MSes. GC-MS analysis of L.
tulipifera leaf washings samples revealed that the main constituent
was palmitone, while separate GC-MS analyses of petals, sepals, and
pistils with anthers, revealed palmitone to be predominant on the
petal and sepal surfaces.