20071-49-2Relevant articles and documents
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Bates,R.B. et al.
, p. 2327 - 2337 (1960)
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Sesquiterpene constituents of the liverwort Calypogeia muelleriana
Warmers, Ute,Wihstutz, Kolja,Buelow, Nils,Fricke, Christiane,Koenig, Wilfried A.
, p. 1723 - 1731 (2007/10/03)
The lipophilic constituents of the liverwort Calypogeia muelleriana were investigated. A new sesquiterpene hydrocarbon, maali-1,3-diene, and two sesquiterpene alcohols with an aromadendrane skeleton, 3-hydroxyledene and 4,5-dehydroviridiflorol, were isolated and identified. The structure elucidation was carried out mainly by NMR spectroscopic techniques (1H-, 13C-, 1H1H-COSY-, HMQC-, HMBC- and NOESY experiments). The majority of the constituents of the liverwort volatiles show a conspicuous biogeneric relationship, which becomes even more obvious in the stereochemical correlations.
Three ent-secoaromadendrane-type sesquiterpene hemiacetals and a bicyclogermacrene from Plagiochila ovalifolia and Plagiochila yokogurensis
Asakawa, Yoshinori,Toyota, Masao,Takemoto, Tsunematsu
, p. 2141 - 2145 (2007/10/02)
A new ent-secoaromadendrane-type sesquiterpene hemiacetal, plagiochiline G, was isolated from Plagiochila ovalifolia. Four new ent-sesquiterpene hemiacetals, plagiochiline H and I, and two pungent methoxyplagiochilines A1, A2 and non-pungent methoxyplagiochiline C were also isolated from P. yokogurensis. The methoxylated plagiochilines A1, A2 and C were derived from the plagiochilines A and C during the extraction procedure. A new germacrene, ent-3α-acetoxybicyclogermacrene, ent-maaliol and the previously known ent- aromadendrane-type sesquiterpenes have been obtained from P. yokogurensis. The structures of the new compounds were elucidated by 1H NMR spectral data and by chemical correlation.