Shûichi Hayashi

(−)-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 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.

Volatile constituents of Zingiber officinale

Abstract Low-boiling constituents from the rhizome of Zingiber officinale Roscoe were examined by GLC. The following compounds were identified: n -heptane, n -octane, n -nonane, acetaldehyde, propionaldehyde, n -butyraldehyde, isovaleraldehyde, acetone, n -propanol, n -nonanol, diethyl sulfide, ethyl isopropyl sulfide, methyl allyl sulfide, methyl and ethyl acetates, α-pinene, camphene, β-pinene, sabinene, myrcene, limonene, β-phellandrene and 1,8-cineole.

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.

(−)-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.

(–)-Herbertene, an aromatic sesquiterpene with a novel carbon skeleton from the liverwort Herberta adunca

The structure of (–)-herbertene, an aromatic sesquiterpene hydrocarbon isolated from the liverwort Herberta adunca, has been determined as (1S)-1,2,2-trimethyl-m-tolycyclopentane (3) on teh basis of chemical and spectral evidence.

(-)-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).

(–)-Myltaylenol, a tricyclic sesquiterpene alcohol with a novel carbon skeleton from the liverwort Mylia taylorii

A sesquiterpene alcohol (–)-myltaylenol with a novel carbon skeleton has been isolated from the liverwort Mylia taylorii, and its structure (3), including the absolute configuration, has been determined on the basis of chemical and spectroscopic evidence as well as X-ray analysis of the benzoate derivative (7).