Determination of Enantiomers of Terpenic Hydrocarbons in Essential Oils Obtained from Species of Pinus and Abies

In situ analysis of chiral components of pichtae essential oil by means of ROA spectroscopy: experimental and theoretical Raman and ROA spectra of bornyl acetate

“…The authors found that the comparative percentage of (+)-α-pinene/(−)-α-pinene equals 16.5/7.6, 6.8/17.7 and 6.2/18.2 for Austrian, Italian and Korean oils, respectively. [22] The above analysis based on the identification of marker bands of the main constituents in the spectra of pichtae essential oils is consistent with our test and initial data obtained from a chemometric analysis of these spectral data. As presented in Fig.…”

“…2, has another medium intensity band with a contribution from the acetate group vibration at 1254 cm −1 and is, among other things, assigned to the mixed stretching of O (11) -C (12) and in-plane bending of O (11) -C (12) -O (14) . As is shown in Table 1, our PED calculations revealed that the contributions of individual modes in vibrations appearing in the wileyonlinelibrary.com/journal/jrs , δC (8) H 3 [13] , δC (3) H 2 [10] 1477 1504 8 δC (6) H 2 [36] , δC (8) H 3 [26] , δC (9) H 3 [23] 1495 18 δC (9) H 3 [55] , δC (8) H 3 [10] 1490 8 δC (10) H 3 [39] , δC (9) H 3 [20] , δC (8) H 3 [11] 1454 1484 4 δC (6) H 2 [22] , δC (10) H 3 [18] , δC (9) H 3 [18] , δC (5) , δC (9) H 3 [16] , δC (6) H 2 [13] 1466 40 δC (8) H 3 [29] , δC (9) H 3 [23] , δC (3) H 2 [20] , δC (5) , δ umb. C (9) H 3 [22] , δ umb.…”

“…C (13) H 3 [10] 1367 1378 6 δ umb. C (13) H 3 [64] , δC (2) HO [16] 1331 1339 4 ωC (6) H 2 [24] , ωC (2) HO [21] 1302 1320 9 ωC (5) H 2 [22] , ωC (4) H [17] , τ ring [16] , ωC (3) H 2 [13] 1286 c 1314 15 ρC (4) H [40] , ωC (3) H 2 [16] 1279 1292 5 ωC (6) H 2 [21] , ωC (5) H 2 [20] , ωC (2) HO [18] , νCCring [11] 1287 8 ωC (3) H 2 [16] , νCCring [16] , ωC (4) H [10] 1254 1262 18 τ C (6) H 2 [32] 1245 5 νO (11) -C (12) [39] , νC (12) -C (13) [14] , β in plane OC (12) O [14] 1240 4 τ C (3) H 2 [10] 1228 1232 21 τ C (5) H 2 [19] 1208 1214 7 τ C (3) H 2 [14] , τ C (6) H 2 [13] 1197 1202 19 ρC (9) H 3 [15] , ρC (8) H 3 [14] , ωC (7) C (8) C (9) [13] , νC-Cring [12] 1165 1169 8 ωC (4) H [17] , ωC (1) -C (10) [11] , τ ring [12] 1148 1149 8 νC (1) -C (10) [10] , τ C (3) H 2 [10] 1142sh 1141 7 νC (7) -C (8) + νC (7) -C (9) [13] 1115 1118 11 τ C (3) ...…”

“…In particular, pichtae essential oil (Siberian fir needle oil), known for its anti-inflammatory and antispasmodic properties, is very rich in BA and contains from 25 to 42% of this component. [19,20] Steroenantiomeric analysis of pichtae oil [21,22] and also other species of conifers [23] has been performed using chiral GC. Surprisingly, among other enantiomers of monoterpenes, only the (−)-isomer of BA was detected in all samples.…”

Composition, antioxidant and antimicrobial activity of the essential oils of a full grown tree of Pinus cembra L. from the Calimani mountains (Romania)

“…[4][5][6][7][8][9] In contrast, there are only a few studies on cembran pine essential oils. 10,11 Dormont et al studied the volatiles emitted by the cones and foliage (ramets with one-year-old needles from the apical parts of branches) and reported α-and β-pinene together with a mixture of limonene and β-phellandrene as the major volatile constituents; other monoterpene hydrocarbons (myrcene, camphene, sabinene, terpinolene and bornyl acetate) were identified in traces. In addition, traces of tricyclene were found in the cone volatiles.…”