Assigning the C-15 configuration of 15-hydroxy-, 15-methoxy-, 15-ethoxy- hexahydrofurofuran neoclerodane diterpenoids

Indagini fitochimiche su alcune popolazioni italiane di Artemisia alba (Asteraceae)

Studio dell'attività biocatalitica delle piante del genere Citrus: risultati preliminari

Fetid odors in Caralluma europaea (Guss.) N.E.Br. (Apocynaceae-Asclepiadoideae): a chemical characterization

Studio della reazione di Grignard su derivati dell'acido ursolico

Sintesi di lattoni sesquiterpenici e loro attività citotossica

Natural products and derivatives from Ferulago campestris (Apiaceae)

Citrus peels as biocatalyst for deacetylation reactions

Antibacterial and anticoagulant activities of coumarins isolated from the flowers of Magydaris tomentosa (Desf.) DC (Apiaceae)

The phytochemical investigation of the acetone and methanol extracts of the flowers of Magydaris tomentosa (Desf.) DC afforded six known coumarins as well as (+)-meranzin hydrate (7), not previously reported as a natural product. The antibacterial activity of umbelliprenin (1), osthol (2), imperatorin (3), citropten (4) and (+)-meranzin hydrate (7) was tested against Gram-positive and Gram-negative bacteria. All coumarins (1-7) isolated in this study inhibited growth of all bacterial strains tested (MIC between 16 and 256 μg/mL), the most active being imperatorin (3) (MICs between 32 and 128 μg/mL) and citropten (4) (MICs between 16 and 256 μg/mL). The anticoagulant activity of compounds 1-…

The cytotoxic activity of natural and semisynthetic sesquiterpene lactones

Conformational analysis and DFT calculations of 8 alpha-hydroxy-germacradiene-6,12-olide derivatives

Antimicrobial activity of coumarins from the roots of Ferulago campestris (Apiaceae)

Nuovi flavonoidi da Bonannia graeca (L.) Halácsy e loro attività biologica

Chemical composition of the essential oil of Teucrium flavum ssp. flavum from Zakyanthos Greece

Volatile Profile of two Strawberry variety, " S candonga and F. fortuna" by SPME-GC/MS

Background: The cultivated strawberry brings the the botanical name Fragaria X ananassa and is derived from the crossing of different species of Fragaria, brought to Europe from America in the sixteenth century. Strawberries are widely appreciated and consumed as a pleasant-tasting fruit either in fresh form or as processed product. Of the many factors than can affect the quality of fruit (sensorial and nutritional), the variety is especially important, but it is also affected by crop conditions. The main characteristics related to the fruit quality and nutritional attributes were assessed in several varieties of strawberry. Objective: The aim of this work was to study the aromatic componen…

Metaboliti secondari in Caralluma europaea

Chemical Composition of the Essential Oils of Three Species of the Apiaceae Family Growing Wild in Sicily: Bonannia graeca, Eryngium maritimum and Opopanax chironium

n the present study the chemical composition of the essential oils from aerial parts of Bonannia graeca (L.) Halácsy and Opopanax chironium (L.) Kock, and from aerial parts and roots of Eryngium maritimum L. was evaluated by GC and GC-MS. α-Pinene (15.2%) and β-pinene were recognized as the main constituents of B. graeca, whereas the aerial parts of O. chironium contained mainly the diterpene cembrene and the coumarin angelicin. In both aerial parts and roots of E. maritimum germacrene D (10.4% and 15.9%, respectively) and 2,4,5-trimethylbenzaldehyde (8.3% and 6.7%) were the most abundant components

Essential oil composition and antibacterial activity of Anthemis mixta L. and Anthemis tomentosa L. (Asteraceae)

In the present study the chemical composition of the essential oils from aerial parts and roots of Anthemis mixta L. and A. tomentosa L. was evaluated by GC and GC-MS, and their antibacterial activity tested against ten bacterial species. Hexadecanoic acid (15.2%) was recognized as the main constituent of A. mixta, together with τ-cadinol (6.7%), while in both aerial parts and roots of A. tomentosa nonacosane (21.9% and 20.7%), heptacosane (8.1% and 6.0%), hexadecanoic acid (8.1% and 27.1%) and hexahydrofarnesylacetone (6.8% and 5.5%) prevailed. The oils from aerial parts of both species showed a good activity against Gram-positive bacteria. These results suggest that the plants could be po…

The cytotoxic activity of natural and semisynthetic guaianolides

Indagine fitochimica sulle radici di Helleborus bocconei Ten. subsp. intermedius.

Metabolites from the aerial parts of the Sicilian population of Artemisia alba Turra

Phytochemical investigation of the CH2Cl2 extract of the aerial parts of Artemisia alba Turra afforded one new irregular sesquiterpenoid, artemiric acid, and five known metabolites: hydroxydavanone, the coumarins isofraxidin and scopoletin, (6S*,7S*,10R*)-6,10-dimethyl-7,10-epoxyocta-11-enoic acid and artalbic acid. From the MeOH extract three flavonoids were identified: chrysoeriol, quercetin and isorhamnetin. The possible biogenetic pathways of artemiric and artalbic acids are discussed.

Sintesi e attività antitumorale di derivati dell'acido ursolico

Lignans and an unusual steroids from the seeds of Centaurea sclerolepis Boiss

Attività citotossica di derivati ent-kauranici.

Phytochemical investigation of four Teucrium species

Biological activities of natural guaianolides from Centaurea hololeuca Boiss and their derivatives

Chemical composition of salvia argentea L. (laminaceae)

Flavonoids in sbtribe Centaureinae (Cass.) Dumort (tribe Carduae, Asteraceae): distibution and 13C spectral data

Asteraceae Bercht. & J. Presl is one of the biggest and most economically important plant families. The taxonomy and phylogeny of Asteraceae is rather complex and according to the latest and most reliable taxonomic classification of Panero & Funk, based on the analysis of nine chloroplast regions, the family is divided into 12 subfamilies and 35 tribes. One of the largest tribes of Asteraceae is Cardueae Cass. with four subtribes (Carlininae, Echinopinae, Carduinae and Centaureinae) and more than 2500 species. Susanna & Garcia-Jacas have organized the genera of Centaureinae (about 800 species) into seven informal groups, which recent molecular studies have confirmed: 1. Basal genera; 2. Vol…