Triterpenoids in leaves of Urals and Altai birches and questions of their chemotaxonomy

Pokhilo, N. D.; Makhnev, A. K.; Uvarova, N. I.

doi:10.1007/bf00607559

Cited by 4 publications

(4 citation statements)

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“…It was identified in our extracts by comparison with pure phytol. 18), 111 (6), 95 (12), 83 (14), 82 (10), 81 (22), 72 (6), 71 (100), 70 (14), 69 (25), 68 (17), 67 (10), 57 (33), 56 (16), 55 (31), 43 (46), 42 (6), 41 (39) 9.100 phytol IV 284 (9), 185 (10), 129 (23), 115 (10), 97 (18), 96 (8), 95 (14), 87 (13), 85 (19), 84 (10), 83 (25), 82 (10), 81 (16), 79 (17), 73 (86), 71 (33), 70 (13), 69 (40), 68 (12), 67 (25), 61 (20), 60 (68), 57 (62), 56 (19), 55 (77), 54 (10), 45 (11), 44 (20)…”

Section: Resultsmentioning

confidence: 99%

“…, 136 (10), 135 (16), 133 (13), 121 (17), 119 (19), 109 (21), 107 (21), 105 (23), 95 (31), 94 (14), 93 (21), 91 (19), 83 (10), 81 (29), 79 (18), 71 (9), 69 (42), 67 (20), 57 (26), 55 (44), 43 (42), 41 (38) 18.700 R-amyrin XII 438 (1), 216 (8), 203 (16), 201 (13), 175 (23), 173 (18), 163 (10), 161 (19), 159 (15), 149 (16), 148 (13), 147 (28), 145 (18), 135 (27), 134 (16), 133 (31), 131 (14), 123 (24), 122 (13), 121 (35), 119 (38), 109 (35), 108 (12), 107 (48), 105 (37), 97 (13), 96 (11), 95 (60), 94…”

Section: Resultsunclassified

“…Many tetracyclic dammarane-type triterpenes have been identified in birch foliage as in a study of Betula mandschurica foliage (9). Research on other birch species, B. pendula and Betula ermanii (10,12), Betula kelleriana (11), and Betula nana (12), also confirmed the presence of dammarane-type triterpenoids in the foliage.…”

Section: Introductionmentioning

confidence: 84%

“…Three different skeleton types of pentacyclic tritepenes are present in our extracts: lupane (betulonic aldehyde), oleanane (β-amyrin), and ursane (α-amyrin). The dammarane-type triterpenes determined in the foliage of some European birches ( − ) do not seem to be present in the yellow birch foliage.…”

Section: Discussionmentioning

confidence: 99%

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Variation of Chemical Composition of the Lipophilic Extracts from Yellow Birch (Betula alleghaniensis) Foliage

Lavoie

Stevanović

2005

J. Agric. Food Chem.

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The occurrence of biologically active compounds identified for the first time in the lipophilic extracts of yellow birch (Betula alleghaniensis Britt.) foliage led to the quantification of the seasonal variation of their concentrations. Yellow birch foliage was collected from late June until late September 2003 in two different regions of Quebec. The extraction yields using hexane as a solvent were determined, and the extracts were analyzed by GC-MS to identify their molecular composition. In terms of both extraction yields and the concentration of the targeted molecules present in the extracts, mid-September has been determined as the best time to collect foliage samples. A total of 14 constituents were identified in these extracts. This is the first report of the presence of all of these constituents in yellow birch foliage and of some of them in the genus Betula. The most important compounds identified in yellow birch foliage extracts are triterpene squalene and aliphatic hydrocarbon tetracosan, aliphatic alcohol phytol, fatty acids hexadecanoic and octadecanoic, pentacyclic triterpenes alpha- and beta-amyrin, and phytosterol stigmast-5-en-3-ol.

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