Irregular monoterpene alcohols from Artemisia herba-alba

Segal, Ruth; Breuer, Aviva; Feuerstein, I.

doi:10.1016/s0031-9422(00)83962-x

Cited by 24 publications

(5 citation statements)

References 9 publications

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“…Analysis of oil samples from Morocco had established the existence of at least seven chemotypes of the so-called armoise oil (Benjilali et al, 1982;Ouyahya et al, 1990;Lawrence, 1993). Other chemotypes were found in oil samples from Israel and the Sinai Desert (Segal et al, 1980;Feuerstein et al, 1986;Segal et al, 1987;Yashphe et al, 1987) and further types in oil samples from Egypt (El-Hawary et al, 1983;El-Sayed and Seida, 1990). Oil composition of this species from various areas of Algeria was used to characterize a chemotype different from those found in Morocco (Vernin and Merad, 1994;Vernin et al, 1995).…”

Section: Introductionmentioning

confidence: 98%

Composition and infraspecific variability of Artemisia herba-alba from southern Spain

Salido

Valenzuela

Altarejos

et al. 2004

Biochemical Systematics and Ecology

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The composition of the essential oils of 16 individual plants of Artemisia herba-alba Asso ssp. valentina (Lam.) Marcl. (at the full bloom stage) growing wild in four different locations from southern Spain were investigated by capillary GC and GC-MS in combination with retention indices. Among the 60 identified constituents (accounting for 80.6-95.0% of the oils), 33 have been reported for the first time in Spanish A. herba-alba oil and 17 of them have not been previously described in A. herba-alba oil. From the analysis of the oil samples, it could be deduced that a noticeable chemical polymorphism typified this taxon. Four groups of essential oils exhibited a single compound with percentages near 30% or higher: davanone, 1,8-cineole, chrysanthenone and cis-chrysanthenol. Two further oil types showed p-cymene and cis-chrysanthenyl acetate as major components in moderate amounts (ca. 20%). All of these types of essential oils have not been previously found in A. herba-alba from Spain and the appearance of such considerable amount of p-cymene is described here for the first time in A. herba-alba. #

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Section: Introductionmentioning

confidence: 98%

Composition and infraspecific variability of Artemisia herba-alba from southern Spain

Salido

Valenzuela

Altarejos

et al. 2004

Biochemical Systematics and Ecology

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“…herba-alba is unusual in containing (+)-enantiomer of artemisia alcohol (Segal et al, 1980). Furthermore, the species contains artemisia ketone.…”

Section: Discussionmentioning

confidence: 99%

A glandular trichome-specific monoterpene alcohol dehydrogenase from Artemisia annua

et al. 2010

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The major components of the isoprenoid-rich essential oil of Artemisia annua L. accumulate in the subcuticular sac of glandular secretory trichomes. As part of an effort to understand isoprenoid biosynthesis in A. annua, an expressed sequence tags (EST) collection was investigated for evidence of genes encoding trichome-specific enzymes.This analysis revealed a gene denoted Adh2, that encodes an alcohol dehydrogenase and shows a high expression level in glandular trichomes relative to other tissues. The gene product, ADH2, shows up to 61% amino acid identity to members of the short chain alcohol dehydrogenase/reductase (SDR) superfamily, including Forsythia x intermedia secoisolariciresinol dehydrogenase (49.8% identity). Through in vitro biochemical analysis, ADH2 was found to show a strong preference for monoterpenoid secondary alcohols including carveol, borneol and artemisia alcohol. These results indicate a role for ADH2 in monoterpenoid ketone biosynthesis in A. annua glandular trichomes.

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“…-MS.: 168 (0.5, M t ) , 41 (loo), 69 (871, 43 (54), 83 (16). 96 (16j, 27 (14), 111 (6), 153 (6), 126 (5). (Santolinyl acetate; 19).…”

Section: 6-mentioning

confidence: 99%

“…Recently, Segal et al described the isolation of some similar irregular monoterpene alcohols in Artemisia herba alba [5]. The biogenetic origin of these structures has been widely discussed ( [ 6 ] [7] and ref.…”

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confidence: 99%