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

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• 作者：Chun-Huan Li ; Shu-Xi Jing ; Shi-Hong Luo ; Wei Shi ; Juan Hua ; Yan Liu ; Xiao-Nian Li ; Bernd Schneider ; Jonathan Gershenzon ; Sheng-Hong Li
• 刊名：Organic Letters
• 出版年：2013
• 出版时间：April 5, 2013
• 年：2013
• 卷：15
• 期：7
• 页码：1694-1697
• 全文大小：268K
• 年卷期：v.15,no.7(April 5, 2013)
• ISSN：1523-7052

文摘

A new class of unique sesterterpenoids, colquhounoids A鈥揅 (1鈥?b>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.