Peltate Glandular Trichomes of Colquhounia coccinea var. mollis Harbor a New Class of Defensive Sesterterpenoids

A new class of unique sesterterpenoids, colquhounoids A–C (1–3), were identified from the peltate glandular trichomes of Colquhounia coccinea var. mollis (Lamiaceae) through precise laser-microdissection coupled with UPLC/MS/MS and spectroscopic analyses and X-ray diffraction. Very interestingly, th...

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Veröffentlicht in:Organic letters 2013-04, Vol.15 (7), p.1694-1697
Hauptverfasser: Li, Chun-Huan, Jing, Shu-Xi, Luo, Shi-Hong, Shi, Wei, Hua, Juan, Liu, Yan, Li, Xiao-Nian, Schneider, Bernd, Gershenzon, Jonathan, Li, Sheng-Hong
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Sprache:eng
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Zusammenfassung:A new class of unique sesterterpenoids, colquhounoids A–C (1–3), were identified from the peltate glandular trichomes of Colquhounia coccinea var. mollis (Lamiaceae) through precise laser-microdissection coupled with UPLC/MS/MS and spectroscopic analyses and X-ray diffraction. Very interestingly, their structural features and defensive function are closely related to leucosceptroid-class sesterterpenoids harbored by the glandular trichomes of another Lamiaceae taxon, Leucosceptrum canum, even though this is morphologically distinct and taxonomically distant.
ISSN:1523-7060
1523-7052
DOI:10.1021/ol4004756