Akihiko Matsuo

(−)-Maalioxide and (+)-cyclocolorenone, enantiomeric sesquiterpenoids from the liverwort, Plagiochila acanthophylla subsp. japonica

Aus den Hexanextrakten vonPlagiochila acanthophylla subsp.japonica wurden (−)-Maalioxid und (+)-Cyclocolorenon isoliert. Diese Verbindungen sind enantromer zu denjenigen, die aus höheren Pflanzen erhalten worden sind.

Enantiomeric type sesquiterpenoids of the liverwort Marchantia polymorpha

Abstract A series of ent -sesquiterpenoids corresponding to the optical antipodes of those in higher plants have been isolated from the liverwort Marchantia polymorpha . These sesquiterpenoids provide yet another example of the peculiar stereospecificity of the biogenesis of the liverwort sesquiterpenoids and suggest a special taxonomic position of the liverworts in the plant kingdom.

Enantiomeric cuparene-type sesquiterpenoids from Bazzania pompeana

Abstract Two enantiomeric cuparene-type sesquiterpenoids, (R)-(−)-cuparene ( 1 ) and (R)-(−)-δ-cuparenol ( 2 ), have been isolated from the liverwort, Bazzania pompeana . The structures and absolute configurations of the two compounds have been determined.

Bazzanene, a sesquiterpene hydrocarbon of a new carbon skeleton fromBazzania pompeana (Lac.) Mitt.

Aus dem essentiellen öl vonBazzania pompeana (Lac.) Mitt. wurde Bazzanen, ein Sesquiterpen-Kohlenwasserstoff mit einem neuartigen Kohlenstoffgerüst, isoliert. Bazzanen besitzt die Struktur des 2,6,6-Trimethyl-8-methylen bicyclo[5.3.1.]undec-2-ens.

Labdane diterpene glycosides with 6-deoxy-L-idose from Aster spathulifolius Maxim.

Abstract Three labdane type diterpene glycosides ( 1 , 2 and 3 ) with 6-deoxy-L-idose have been isolated from Aster spathulifolius Maxim. and their structures have been determined on the basis of chemical and spectral data.

Bazzanenol, a new sesquiterpene alcohol having a skeleton of Bicyclo[5.3.1] undecane system from hepaticae,Bazzania pompeana (Lac.) Mitt

Isolierung und Strukturaufklärung eines neuen Sesquiterpenalkohols ausBazzania pompeana (Lac.) Mitt.

Dolabellane diterpenoids from the liverwort Odontoschisma denudatum

Abstract Five new dolabellane diterpenoids have been isolated from the liverwort Odontoschisma denudatum, and their structures and absolute configurations have been determined on the basis of 1H and 13C NMR evidence and chemical correlation.

(−)-Maalian-5-ol, a new enantiomeric sesquiterpenoid from the liverwortPlagiochila ovalifolia

A new enantiomeric sesquiterpene alcohol named (−)-maalian-5-ol was isolated from the liverwort, and the structure and absolute configuration was determined to be the stereostructureI by chemical and spectral evidence.

Fatty acid ethyl esters in the liverwort conocephalum conicum

Abstract A series of fatty acid ethyl esters ranging from C 14 to C 24 was isolated from a hexane extract of the liverwort Conocephalum conicum , these esters accounted for 77% of the extract. The ethyl esters consisting of even-numbered fatty acids were predominant and ethyl palmitate was the major constituent.

(-)-Dihydromylione A, a novel tetracyclic sesquiterpene ketone containing two conjugated cyclopropane rings, from Mylia taylorii (liverwort)

A novel tetracyclic sesquiterpene ketone named (-)-dihydromylione A (III) was isolated from the liverwort, and the structure was determined together with the absolute configuration to be ent-5, 10-cyclo-aromadendr-3-one by connecting the compound with co-occurring (-)-myliol (II).