470-40-6Relevant articles and documents
New acorane- and cuparane-type sesqui- and new labdane- and seco- labdane-type diterpenoids from the Japanese Liverwort Jungermannia infusca (Mitt.) Steph.
Nagashima, Fumihiro,Suzuki, Makoto,Takaoka, Shigeru,Asakawa, Yoshinori
, p. 9117 - 9132 (1999)
A new acorane- and five new cuparane-type sesqui- and two new labdane- and two new seco-labdane-type diterpenoids have been isolated from the Japanese liverwort Jungermannia infusca (Mitt.) Steph., together with previously known sesquiand diterpenoids. Their structures were determined by extensive NMR techniques, chemical degradation and X-ray crystallographic analysis.
SESQUITERPENE ALCOHOLS FROM CRYPTOMERIA JAPONICA AND C. FORTUNEI LEAF OIL
Nagahama, Shizuo,Tazaki, Masato,Kobayashi, Hiroshi,Sumimoto, Masashi
, p. 879 - 882 (2007/10/02)
4β-Hydroxygermacra-1(10),5-diene, thujopsan-2α-ol and hedycaryol were found in the leaf oil of Cryptomeria japonica obtained by hexane extraction.Both the first and last were present in all races of C. japonica native in Kyushu main island, but thujopsan-2α-ol was found in about one-third and not found in C. fortunei so far examined.Moreover, some C. fortunei lacked 4β-hydroxygermacra-1(10),5-diene.On the other hand some contained only this as sesquiterpene alcohol.When the leaves were steam-distilled, 4β-hydroxygermacra-1(10),5-diene isomerized to α-cadinol and hedycaryol isomerized to elemol and eudesmols.Thujopsan-2α-ol was synthesized from mayurone.Key Word Index - Cryptomeria japonica; C. fortunei; Taxodiaceae; sesquiterpene alcohols; 4β-hydroxygermacra-1(10),5-diene; thujopsan-2α-ol; hedycaryol.
TERPENOIDS FROM PLANTS OF THE FAMILY CUPRESSACEAE. SESQUITERPENE ALCOHOLS FROM THE NEEDLES OF Microbiota decussata
Raldugin, V. A.,Storozhenko, V. G.,Rezvukhin, A. I.,Pentegova, V. A.,Gorovoi, P. G.,Baranov, V. I.
, p. 124 - 129 (2007/10/02)
The sesquiterpene alcohols 5S,8S-germacra-1E,6E-dien-5-ol, (+)-α-bisabolol, hedycaryol, and β-eudesmol and also the previously undescribed alcohols thujopsan-2α-ol (I) and microbiotol.Microbiotol is a tricyclic tertiary alcohol with the empirical formula C15H26O, mp 112-113 deg C, containing in its molecule four tertiary methyl groups and cyclopropane ring.