Irregular sesquiterpenoids from Ligusticum grayi roots (original) (raw)

Sesquiterpenoids from the aerial parts of Chloranthus elatior

Phytochemistry Letters, 2013

Thirteen sesquiterpenoids were isolated from the EtOH extract of the aerial parts of Chloranthus elatior. On the basis of spectroscopic methods, the structures of the new naturally occurring compounds were elucidated to be (1R,4R,5R,8S,10R)-1-hydroxy-4-methoxy-eudesm-7(11)-en-12,8-olide (1), 1aH,5b-H,6aH,7aH-4b,10b,15-trihydroxyaromadendrane (2), and (1S,4S,5S,6R,7R,10S)-1,4-dihydroxymaaliane (3), respectively.

Sesquiterpene lactones from the Yugoslavian wild growing plant families asteraceae and apiaceae

Journal of the Serbian Chemical Society, 1999

1. Introduction 2. Results 3. Asteraceae 3.1. Genus Artemisia L. 3.1.1. Artemisia annua L. 3.1.2. Artemisia vulgaris L. 3.1.3. Artemisia absinthium L. (warmwood) 3.1.4. Artemisia scoparia W. et K. 3.1.5. Artemisia camprestris L. 3.2. Genus Ambrosia L. 3.2.1. Ambrosia artemisiifolia L. (the common rag weed) 3.3. Genus Tanacetum L. ( syn. Chrysanthemum L.) 3.3.1. Tanacetum parthenium L. (feverfew) 3.3.2. Tanacetum serotinum L. 3.3.3. Tanacetum vulgare L. (tansy) 3.3.4. Tanacetum macrophyllum Willd. 3.3.5. Tanacetum corymbosum L. 3.4. Genus Telekia Baumg. 3.4.1. Telekia speciosa (Schreb.) Baumg. 3.5. Genus Inula L. 3.5.1. Inula helenium L. 3.5.2. Inula spiraeifolia L. 3.6. Genus Eupatorium L. 3.6.1. Eupatorium cannabinum L. 3.7. Genus Achillea L. 3.7.1. Achillea abrotanoides Vis. 3.7.2. Achillea millefolium subsp. pannonica 3.7.3. Achillea crithmifolia W. et K. 3.7.4. Achillea clypeolata Sibth. et Sm. 3.7.5. Achillea serbica Nyman 3.7.6. Achillea depressa Janka 3.8. Genus Anthemis L. 3...

Sesquiterpenoids—III

Tetrahedron, 1968

+ f+Eudesmol (I) has been synthesized in a highly stereoselective. lO-stage route from the octalone 2 Several of the synthetic intermediates are potentially useful compounds for the synthesis of other eudesmane sesquiterpenoids. ~EUDESMOL * A search of Chemical Abstracts indices through June, 1965, reveals that this compound, usually admixed with the a-and y-isomers (i and ii) has been isolated from more than thirty sources. pvO" gho. t Throughout this paper. x&pounds will be numbered as derivatl!:es of naphthalene, in keeping with current Chemical Abstracts practice. The traditional numbering system for eudesmane sesquiterpenoids is given in Fig. iii.

Atypical Lindenane-Type Sesquiterpenes from Lindera myrrha

Molecules, 2020

Two new lindenane sesquiterpenes were obtained from the roots of Lindera myrrha. These compounds were structurally elucidated by HRMS data, extensive NMR analyses, and comparison between experimental and theoretical 13C-NMR data. Myrrhalindenane A is the first monomeric seco-d lindenane displaying a non-rearranged, cyclohexanic C-ring. Myrrhalindenane B is the second occurrence of an angular lindenane-sesquiterpene related to a C6-C7 lactonization.

Sesquiterpenes from southern Magnolia virginiana

Phytochemistry, 1998

Key Word Index--Magnolia virginiana; Magnoliaceae; sesquiterpene lactones; costunolide; parthenolide; sesquiterpene lactol; costunolact-12//-ol; acetal dimer of costunolact-12fl-ol.

Composition of the essential oil and the hydrosol of the roots of Ligusticum porteri

Monoterpenes and monoterpenes derivatives constitute the main part of the essential oil of the roots of Ligusticum porteri. Sabinene (9.0-15.5%) and p-cymene (6.5-9.7%) are the main compounds of monoterpene hydrocarbons along with a rather unusual compound: viridene (19.4%). trans-Sabinyl acetate (22.6%) is by far the most important oxygenated monoterpene. Several compounds are observed among the sesquiterpene group with percentage generally lower than 1%. The most important compound in one sample is thapsadiene (0.6%) and in the second sample is -selinene (0.7%). Finally, several recently described oxygenated sesquiterpenoids are among the minor compounds. The most important are: -prethapsenol (1.7-3.3%), -preisothapsenol (0.8-1.6%) and β-isoligustigrenol (0.6-1.3%) along with (Z)-ligustilide (0.7%). The hydrosol does not show the presence of hydrocarbon compounds. However, oxygenated compounds such as terpinen-4-ol (16.5 mg/L), including some compounds not observed in the oil such as hexanal (2.5 mg/L), furfural (2.0 mg/L) and p-cymen-8ol (2.5 mg/L), are observed in the hydrosol.