M. M. Herrador

Gibepyrones: α-pyrones from Gibberella fujikuroi

Abstract Six α-pyrones, called gibepyrones A-F, were identified in three different culture media of G. fujikuroi (IMI 58289). Their structures were determined using both spectroscopic techniques and chemical synthesis. Their antimicrobial activity has been screened.

Chemical Composition of the Essential Oils of Pistacia atlantica Desf.

Abstract The chemical composition of the three essential oils obtained by hydrodistillation of the resin, leaves and fruits of Pistacia atlantica Desf. (Anacardiaceae) was studied by GC and GC/MS. Monoterpene hydrocarbons constituted the main chemical group in the resin oil, with α-pinene (42.9%) and β-pinene (13.2%) as the major components. Oil of the fruits contained high amounts of oxygenated monoterpenes, with bornyl acetate (21.5%) as the major component, while oxygenated monoterpenes and sesquiterpenes were found to predominate in the oil of leaves among which terpinen-4-ol (21.7%) and elemol (20.0%) were the most abundant components.

Chemical composition of the essential oils of leaves and wood of Tetraclinis articulata (Vahl) masters

Abstract The essential oils from leaves and wood of Tetraclinis articulata (Vahl) Masters from Morocco were analyzed by GC and GC/MS. The main constituents of the leaves were bornyl acetate (16.5%), camphor (19.1%) and borneol (9.6%), while cedrol (28.2%) and 1,7-di-epi-cedrol (17.9%) were the major components found in the wood.

Chemical Composition of the Essential Oil from Drimys winteri Forst. Wood

Abstract GC/MS analysis of the essential oil from the wood of Drimys winteri Forst. allowed the identification of 56 components and showed a high content of α-pinene (14.9%) and α-cubebene (10.9%).

Chemical Composition of the Essential Oil from the Leaves of Juniperus phoenicea L. from North Africa

Abstract The chemical study of the essential oil extracted from leaves of Juniperus phoenicea growing in Morocco has been carried out. The main components of J. phoenicea oil were the monoterpene hydrocarbons α-pinene (45.5%) and ω-3-carene (13.0%). Our results show a number of differences in composition with respect to a previous study of the leaf oils of J. phoenicea (Greece and Spain).

Gibelactol, A Diterpenoid From Gibberella Fujikuroi

Abstract G. Fujikuroi (Wild Strain Imi 58289), Incubated On Calcium Lactate As Carbon Source, Excreted The Diterpenoid Gibelactol, Which May Be The Biosynthetic Precursor Of Fujenal. The Quantity And Pattern Of Gibberellins And Ent-Kaurenoids Excreted By This Fungus Were Considerably Altered When Either The Stirring Rate Or The Carbon Source Of The Culture Medium Was Modified.

Chemical Composition of the Essential Oils of Cupressus atlantica Gaussen

Abstract The chemical composition of essential oils obtained by hydrodistillation of the wood, leaves and cones of Cupressus atlantica Gaussen (Cupressaceae) was studied by GC and GC/MS. Oxygenated sesquiterpenes constituted the main chemical groups in the oil from wood, with cedrol (45.1%) as the major component. The oil from leaves contained higher amounts of sesquiterpenes with germacrene D (13.1%) and α-muurolol (15.9%) as the major components, while the monoterpene hydrocarbon α-pinene (58.7%) was found to predominate in the oil from cones.