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J Nat Prod
; 63(8): 1166-7, 2000 Aug.
Article
in English
| MEDLINE
| ID: mdl-10978220
ABSTRACT
Three new labdane diterpenoids were isolated from the aerial parts of Stachys plumosa. The first two (1, 2) were the dextrorotatory enantiomers of the known 6-deoxyandalusol and 13-epijabugodiol. Structures were determined using NMR and MS techniques. The absolute stereochemistry of the third compound (3) was not experimentally proved.
Subject(s)
Diterpenes/isolation & purification , Lamiaceae/chemistry , Chromatography, Gas , Chromatography, Gel , Diterpenes/chemistry , Gas Chromatography-Mass Spectrometry , Italy , Magnetic Resonance Spectroscopy , Optical Rotation , Plant Leaves/chemistry , Plant Stems/chemistry , Spectrophotometry, Ultraviolet
3.
Planta Med
; 61(4): 374-5, 1995 Aug.
Article
in English
| MEDLINE
| ID: mdl-7480191
ABSTRACT
Aerial parts of Centaurea napifolia furnished the sesquiterpene lactones cnicin, 4'-acetoxycnicin, melitensin, dehydromelitensin, two known esters of dehydromelitensin, lappaol and a lappaol isomer, and a 1,2-diacylated glucose.
Subject(s)
Lactones/chemistry , Plants, Medicinal , Sesquiterpenes/chemistry , Lactones/isolation & purification , Magnetic Resonance Spectroscopy , Mass Spectrometry , Molecular Structure , Sesquiterpenes/isolation & purification , Structure-Activity Relationship
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