Phytochemistry p. 1741 - 1746 (1992)
Update date:2022-08-17
Topics:
Yano, Kouya
Akihisa, Toshihiro
Kawaguchi, Ryuji
Tamura, Toshitake
Marsumoto, Taro
A new triterpene alcohol isolated from the stems of Neolitsea sericea was shown to have the structure 24-methylene-25-methylcycloartanol.Moreover, in addition to the common triterpene alcohols and sterols, the following uncommon compounds were isolated from the plant material and were identified: (24E)- and (24Z)-24-ethylidenecycloartanol, (24E)- and (24Z)-24-ethylidene-5α-lanost-8-en-3β-ol, 24 methylene-24(25)-dihydroparkeol, 24-methylene-5α-lanosta-7,9(11)-dien-3β-ol, 24-methylenedammarenol, both C-24 epimers of 14α,24-dimethyl-5α-cholest-9(11)-en-3β-ol, 14α-methyl-24α-ethyl-5α-cholest-9(11)-en-3β-ol, and 24α-ethyl-5α-cholestan-3α-ol. Key words: Neolitsea sericea; Lauraceae; triterpene alcohol; sterol; 24-methylene-25-methylcycloartanol; 24α-ethyl-5α-cholestan-3α-ol.
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