IRIS
Pietra, Francesco
 Distribuzione geografica
Salva come PNG Salva come JPEG
Continente #
NA - Nord America 7.507
EU - Europa 1.708
AS - Asia 773
OC - Oceania 11
AF - Africa 9
SA - Sud America 3
Continente sconosciuto - Info sul continente non disponibili 1
Totale 10.012
Salva come PNG Salva come JPEG
Nazione #
US - Stati Uniti d'America 7.474
UA - Ucraina 578
SG - Singapore 460
SE - Svezia 346
CN - Cina 240
FI - Finlandia 226
BG - Bulgaria 125
GB - Regno Unito 115
IT - Italia 93
DE - Germania 82
RU - Federazione Russa 51
FR - Francia 41
CA - Canada 25
JO - Giordania 20
ES - Italia 10
IN - India 9
NL - Olanda 9
TR - Turchia 9
AU - Australia 7
IL - Israele 7
MX - Messico 7
ID - Indonesia 6
JP - Giappone 6
PT - Portogallo 5
CI - Costa d'Avorio 4
HR - Croazia 4
NZ - Nuova Zelanda 4
ZW - Zimbabwe 4
GR - Grecia 3
RO - Romania 3
SK - Slovacchia (Repubblica Slovacca) 3
TH - Thailandia 3
VN - Vietnam 3
AZ - Azerbaigian 2
BR - Brasile 2
CZ - Repubblica Ceca 2
IE - Irlanda 2
LT - Lituania 2
PH - Filippine 2
PK - Pakistan 2
PL - Polonia 2
TW - Taiwan 2
AR - Argentina 1
AT - Austria 1
BE - Belgio 1
CH - Svizzera 1
CR - Costa Rica 1
DZ - Algeria 1
EE - Estonia 1
EU - Europa 1
HU - Ungheria 1
IR - Iran 1
IS - Islanda 1
KR - Corea 1
Totale 10.012
Salva come PNG Salva come JPEG
Città #
Jacksonville 1.263
Chandler 884
Fairfield 799
Ashburn 446
Woodbridge 406
Singapore 370
Wilmington 328
Seattle 326
Columbus 312
Princeton 307
San Mateo 280
Houston 255
Cambridge 253
Ann Arbor 222
Sofia 122
Dearborn 120
New York 113
Boardman 111
Beijing 90
Helsinki 57
San Diego 42
Moscow 39
Lawrence 32
London 28
Düsseldorf 26
Norwalk 26
Bremen 24
Hefei 23
Falls Church 19
Fremont 19
Santa Clara 19
Andover 17
Des Moines 14
Nanjing 14
Verona 14
Toronto 12
Kunming 11
San Paolo di Civitate 11
Guangzhou 9
Izmir 9
Jinan 9
Old Bridge 9
Shanghai 9
Los Angeles 8
Costa Mesa 7
Madrid 7
Kilburn 6
Shenyang 6
Altamura 5
Paris 5
Redwood City 5
Abidjan 4
Acton 4
Bologna 4
Cuauhtémoc 4
Frankfurt am Main 4
Fuzhou 4
Harare 4
Hebei 4
Magenta 4
Milan 4
Munich 4
Nanchang 4
Ottawa 4
San Jose 4
Bontang 3
Bratislava 3
Burnaby 3
Chiswick 3
Clearwater 3
Gallarate 3
Hanoi 3
Hobart 3
Hounslow 3
Melbourne 3
Negrar 3
Phoenix 3
Plovdiv 3
Redmond 3
Southwark 3
Tokyo 3
Xian 3
Atrani 2
Baku 2
Banyuls de la Marenda 2
Baotou 2
Brooklyn 2
Chengdu 2
Cistérniga 2
Delhi 2
Dublin 2
Edinburgh 2
Falkenstein 2
Hyderabad 2
Lanzhou 2
Lisbon 2
Livorno 2
Manerbio 2
Mexico 2
Mountain View 2
Totale 7.691
Salva come PNG Salva come JPEG
Nome #
Hanishin, a semiracemic, bioactive C9 alkaloid of the axinellid sponge Acanthella carteri from the Hanish Islands. A shunt metabolite? 127
7-Bromocavernicolenone, a New a-Bromoenone from the Mediterranean Sponge Aplysina (=Verongia) cavernicola. Implied, Unprecedented Involvement of a Halogenated Dopa in the Biogenesis of a Natural Product 107
A Novel, Degraded Polyketidic Lactone, Leptosphaerolide, and Its Likely Diketone Precursor, Leptosphaerodione. Isolation from Cultures of the Marine Ascomycete Leptosphaeria oraemaris (LINDER) 106
Arboxeniolide-1, a New, Naturally Occurring Xeniolide Diterpenoid from the Gorgonian Paragorgia arborea of the Crozet Is. (S. Indian Ocean) 106
Agelastatin A, a New-Skeleton Cytotoxic Alkaloid of Oroidin Family. Isolation from the Axinellid Sponge Agelas dendromorpha of Coral Sea 104
Dictyotetraene, a New Diterpenoid from a Dictyota sp. (Chromophycota, Dictyotaceae) of the North Brittany Sea 103
(+)-Coralloidin-A and (-)-Coralloidin-B, Two New Sesquiterpenoids from the Mediterranean Alcyonacean Alcyonium coralloides 102
Some Peculiar Cases of 7-Telesubstitution by Anionic Phosphorus Nucleophiles on 2-Halotropones 99
Almazole D, a new type of antibacterial 2,5-disubstituted oxazolic dipeptide from a red alga of the coast of Senegal 98
Aztèquynol A, the first clearly defined, C-branched polyacetylene and the analogue Aztèquynol B. Isolation from the tropical marine sponge Petrosia sp 97
Antipodal pathways to secondary metabolites in the same eukaryotic organism 96
Glutathione S-transferase catalysed dehalogenation of haloaromatic compounds which lack nitro groups near the reaction centre 95
Bis-Allylic Reactivity of the Funicolides, 5,8(17)-Diunsaturated Briarane Diterpenes of the Sea Pen Funiculina quadrangularis from the Tuscan Archipelago, Leading to 16-Nortaxane Derivatives 95
A Butenolide Atypical of The Ranunculaceae: Aquilegiolide from Aquilegia atrata (Var. Atroviolacea) 92
Bretonin A and isobretonin A, unique glycerol derivatives isolated from a demosponge of Brittany waters 91
A Novel Glyceryl Ester (Glyceryl Dendryphiellate A), a Trinor-eremophilane (Dendryphiellin A1), and Eremophilanes (Dendryphiellin E1 and E2) from the Marine Deuteromycete Dendryphiella salina (SUTHERLAND) PUGH et NICOT 91
A Screening of Some Colonial Ascidiacea of Banyuls-sur-Mer for Antibacterial and Antifungal Activities and, Preliminarily, for Natural Products: 2'-Deoxyribonucleosides from Trididemnum cereum (Giard, 1872) 91
Glycerol Enol Ethers of the Brachiopod Gryphus vitreus from the Tuscan Archipelago 91
A New, Unexpected Marine Source of a Molting Hormone. Isolation of Ecdysterone in Large Amounts from the Zoanthid Gerardia savaglia 91
(+)-Raspailyne-A, a novel, acid-sensitive acetylenic enol ether glyceride from the marine sponge Raspailia pumila 90
Coralloidolide F, the First Example of a 2,6-Cyclized Cembranolide: Isolation from the Mediterranean Alcyonacean Coral Alcyonium coralloides 89
Corallistin A, a Second Example of a Free Porphyrin from a Living Organism. Isolation from the Demosponge Corallistes sp. of the Coral See and Inhibition of Abnormal Cells 88
Synthesis of the Alleged Natural Monoterpenoid a-Santolinenone 87
On the First Marine Natural Product Having Low Enantiomeric Purity 85
On the absolute configuration of penlanfuran and related sesquiterpenoids of the sponge Dysidea fragilis from the North-Brittany sea 84
Isolation of ergosta-4,24(28)-dien-9-one from both Astrophorida demosponges and subantarctic hexactinellides 83
New Furano-Sesquiterpenoids from Mediterranean Sponges 82
Novel Cembranolides (Coralloidolide D and E) and a 3,7-Cyclized Cembranolide (Coralloidolide C) from the Mediterranean Coral Alcyonium coralloides 82
Rarisetenolide, epoxyrarisetenolide and epirarisetenolide, new skeleton sesquiterpene lactones as taxonomic markers and defensive agents of the marine ciliated morphospecies Euplotes rariseta 81
Configuration, conformation and reactivity of highly functionalized eunicellane diterpenes isolated from the gorgonians Eunicella cavolinii and Eunicella singularis from Marseille 81
Twelve membered O-bridged, cyclic ethers of red seaweeds in the genus Laurencia exist in solution as slowly interconverting conformers 81
Oceanapins A-F, unique branched ceramides isolated from the Haplosclerid sponge Oceanapia cf. tenuis of the Coral Sea 80
Preliminary survey of toxicity of the green alga Caulerpa taxifolia introduced into the Mediterranean 80
New Functionalized Cycloheptatrienes via Tropone s-Adducts 80
On the absolute configuration of penlanfuran and related sesquiterpenoids of the sponge Dysidea fragilis from the North-Brittany sea 80
Slowly Interconverting Conformers of the Briarane Diterpenoids Verecynarmin-B, -C, and-D Isolated from the Nudibranch Mollusc Armina maculata and the Pennatulacean Octocoral Veretillum cynomorium of the East Pyrenean Waters 79
A novel type of a second epoxy bridge in eunicellane diterpenes: isolation and 79
Isolation of the Cembranoid Preverecynarmin Alongside Some Briaranes, the Verecynarmins, from Both the Nudibranch Mollusc Armina maculata and the Octocoral Veretillum cynomorium of the East Pyrenean Mediterranean Sea 78
Novel 10-Hydroxydocosapolyenoic Acids from Deep-Water Scleractinian Corals 78
The Active Centres of Agelastatin A, a Strongly Cytotoxic Alkaloid of the Coral Sea Axinellid Sponge Agelas dendromorpha, as Determined by Comparative Bioassays with Semisynthetic Derivatives 78
Konakhin, a novel type of degraded sesterterpene. Isolation from a marine sponge of Senegal 77
Synthesis of the bretonins, polyolefinic esterified glyceryl ethers of an unidentified sponge from the north- Brittany sea:absolute configuration and novel structure assignment 77
Antimicrobial Activities from Marine Fungi 77
Leiopathic Acid, a Novel Optically Active Hydroxydocosapentaenoic Acid, and Related Compounds, from the Black Coral Leiopathes sp. of Saint Paul Island (S. Indian Ocean) 77
Isolation, in large Amounts, of the Rare Plant Ecdysteroid Ajugasterone-C from the Mediterranean Zoanthid Gerardia savaglia 76
Stereochemical features of sesquiterpene metabolites as a distinctive trait of red seaweeds in the genus Laurencia 76
On the First Marine Stigmastane Sterols and Sterones Having a 24,25-Double Bond. Isolation from the Sponge Stelletta sp. of the Deep Coral Sea 76
Isolation of Toxic and Potentially Toxic Sesqui- and Monoterpenes from the Tropical Green Seaweed Caulerpa taxifolia Which Has Invaded the Region of Cap Martin and Monaco 76
Sphinxolide, a 26-membered antitumoral macrolide isolated from an unidentified Pacific nudibranch 75
Cytotoxins, Mycotoxins and Drugs from a New Deuteromycete, Acremonium neo-caledoniae, from the Southwestern Lagoon of New Caledonia 75
From Epiraikovenal, an Instrumental Niche-Exploitation Sesquiterpenoid of Some Strains of the Marine Ciliated Protist Euplotes raikovi, to an Unusual Intramolecular tele Dienone-Olefin [2+2] Photocycloaddition 74
Novel Trinor-eremophilanes (Dendryphiellin B, C, and D), Eremophilanes (Dendryphiellin E, F, and G), and Branched C9-Carboxylic Acids (Dendryphiellic Acid A and B) from the Marine Deuteromycete Dendryphiella salina (Sutherland) Pugh et Nicot 73
Gerardiasterone, a New Ecdysteroid with a 20,22,23,25-Tetrahydroxylated Side Chain from the Mediterranean Zoanthid Gerardia savaglia 73
Aplysinopsin-type alkaloids from Dendrophyllia sp., a scleractinian coral of the family Dendrophylliidae of the Philippines. Facile photochemical Z/E photoisomerization and thermal reversal 72
C15 Acetogenins and terpenes of the dictyoceratid sponge Spongia zimocca of il Rogiolo: a case of seaweed-metabolite transfer to, and elaboration within a sponge? 72
Pteridines, Sterols, and Indole Derivatives from the Lithistid Sponge Corallistes undulatus of the Coral Sea 72
Metabolites with a Novel C30 backbone from marine ciliates 72
New 1,2,3,4-tetrahydropyrrolo[1,2-a]pyrimidinium alkaloids(phloeodictynes) from the New Caledonian shallow-waterhaplosclerid sponge Oceanapia fistulosa. Structural elucidationfrom mainly LC-tandem-MS-soft-ionization techniques anddiscovery of antiplasmodial activity 70
Hydroxyicosatetraenoic, Hydroxyicosapentaenoic, Hydroxydocosapentaenoic, and Hydroxydocosahexaenoic Acids from the Sponge Echinochalina mollis of the Coral Sea 69
Coralloidin C, D, and E: Novel Eudesmane Sesquiterpenoids from the Mediterranean Alcyonacean Alcyonium coralloides 69
Leucascandrolide A, a New Type of Macrolide: the First Powerfully Bioactive Metabolite of Calcareous Sponges (Leucascandra caveolata, a New Genus from the Coral Sea) 69
Adriadysolide, the First Monoterpenoid Isolated from a Marine Sponge 66
Nuovi terpenoidi da ciliati marini del genere Euplotes : Chimica e Biologia a confronto 66
Caratteristiche strutturali e possibili applicazioni di complessi delle euplotine con beta-ciclodestrine 66
Cavernicolin-1 and Cavernicolin-2, Two Epimeric Dibromolactams from The Mediterranean Sponge Aplysina (Verongia) cavernicola 64
2'-Deoxynucleoside Uronic Acids from the Ascidian Aplidium (=Amarocium) fuscum (Drasche, 1883) 64
A synthesis of (S)-(+)-cryptone 62
Relative Contributions to Antitumoral Activity of Lipophilic vs. Polar Reactive Moieties in Marine Terpenoids 62
AlmazoleC, a new indole alkaloid bearing an unusually 2,5-disubstituted oxazole moiety, and its putative biogenetic peptidic precursor , from a Senegalese delesseriacean seaweed 61
Novel aplysinopsin-type compounds from scleractinian corals of the family Dendrophyllidae of the Mediterraneanand the Philippines. Configurational-assignment criteria, stereospecific synthesis, and photoisomerization 60
Almazole A and almazole B, unusual marine alkaloids isolated from an unidentified red seaweed from the coasts of Senegal 60
Selective INEPT Experiments on XL-Series Spectrometers 59
A Photochemical Route to 4-Alkytropones including Nezukone 59
Sarcodictyenone, a Ring-Reduced, Optically Active Linear Tetraprenylquinone from the Mediterranean Stolonifer Sarcodictyon roseum (= Rolandia rosea) 56
Sarcodictyn A and Sarcodictyn B, Novel Diterpenoidic Alcohols Esterified by (E)-N(1)-Methylurocanic Acid. Isolation from the Mediterranean Stolonifer Sarcodictyon roseum 56
Reaction of Tropone with 2-Mercaptoethanol: 1,2-Difunctionalization of Cycloheptatrienenes with Oxygen and Sulphur in a Fused Ring 55
On the Stereochemisty of Grignard Addition to Bicyclo[3.3.1]nonan-2-one. Preferential Axial Attack on a Cyclohexanone System by a Bulky Nucleophile 55
Penlanfuran, a new furanoid sesquiterpene from the marine sponge Dysidea fragilis (Mont.) of Brittany. A striking difference with the same Hawaiian species. 55
Rogiolol-acetate : a new halogenated chamigrane from the sponge Spongia zimocca. An interesting case of dynamic process investigated by NMR lineshape analysis 54
Leucascandrolide B, a new 16-membered, extensively methyl branched polyhalogenated macrolide from the calcareous sponge Leucascandra caveolata from northeastern waters of New Caledonia 54
On the unusual propensity by the red seaweed Laurencia microcladia of Il Rogiolo to form C15 oxepanes: isolation of rogioloxepane A,B, C and their likely biogenetic acyclic precursor, prerogioloxepane 53
Nuovi macrolidi da un nudibranco dell'Oceano Pacifico 53
Hanishenols A-B, novel linear or methyl-branched glycerol enol ethers of the Axinellid Sponge Acanthella Carteri (= Acanthella aurantiaca) from the Hanish Islands, Red Sea' 52
High Solvolytic Reactivity And Conformational Bias in New Obtusallenes,A Rare Family of C15 Macrocyclic Ethers 52
Isolation from the Medterranean Stoloniferan Coral Sarcodictyon roseum of Sarcodictyn C, D, E, and F, Novel Diterpenoidic Alcohols Esterified by (E)-or(Z)-N(1)-Methylurocanic Acid. Failure of the Carbon-Skeleton Type as a Classification Criterion 52
Suberein, a novel dimeric styryl sulfate from the verongid sponge Suberea creba from New Caledonia 52
Conformational Studies, from temperature-dependent NMR specta, of marine polyalogenated chamigranes 51
Conformational Preferences and Absolute Configuration of Agelastatin A, a Cytotoxic Alkaloid of the Axinellid Sponge Agelas dendromorpha from the Coral Sea, via Combined Molecular modelling, NMR and Exciton Splitting for Diamides and Hydroxyamide Derivati 51
On the Funicolides, Briaranes of the Pennatulacean Coral Funicolina quadrangularis from the Tuscan Archipelago: Conformational Preferences in this Class Diterpenes 51
Antibacterial and anticholinesterase activities of aplysamine-4, a bromotyrosine-derived metabolite of a Red Sea marine sponge 51
Calenzanol, the first member of a new class of sesquiterpene with a novel skeleton from the red seaweed Laurencia microcladia from the Bay of Calenzana, Elba Island 50
Verecynamin A, a Novel Briarane Diterpenoid Isolated from Both the Mediterranean Nudibranch Mollusc Armina maculata and its Prey, the Pennatulacean Octocoral Veretillum cynomorium 50
Coralloidolide A and Coralloidolide B, the First Cembranoids from Mediterranean Organisms, the Alcyonacean Alcyonium coralloides 50
Epinardins A-C, New Pyrroloiminoquinone Alkaloids of Undetermined Deep-Water Green Demosponges from Pre-Antarctic Indian Ocean 50
Polar metabolites of the tropical green seaweed Caulerpa taxifolia which is spreading in the Mediterranean Sea. Glycoglycerolipids and stable enols (alpha-keto esters) 50
Novel Naamidine-Type Alkaloids and Mixed-Ligand Zn++ Complexes of a Calcareous Sponge, Leucetta sp., from the Coral Sea 49
Nuovi Composti Poliarsenicali Attivi da una Spugna Poecilosclerida Tropicale 49
Analisi conformazionale di nuovi prodotti naturali marini mediante studio di NMR dinamico e calcoli di Meccanica Molecolare 49
Hemifistularin 3: a degraded peptide or biogenetic precursor? Isolation from a sponge of the order Verongida of the Coral Sea or generation from base tratment of 11-oxofistularin-3 48
Characterization of Anticholinesterase-active 3-alkylpyridinium polymers from the marine sponge Reniera sarai in aqueous solutions 48
Totale 7.299
Salva come PNG Salva come JPEG
Categoria #
all - tutte 44.211
article - articoli 0
book - libri 0
conference - conferenze 0
curatela - curatele 0
other - altro 0
patent - brevetti 359
selected - selezionate 0
volume - volumi 0
Totale 44.570
Salva come PNG Salva come JPEG


Totale Lug Ago Sett Ott Nov Dic Gen Feb Mar Apr Mag Giu
2019/20201.619 0 0 0 0 281 196 363 157 273 88 56 205
2020/20211.629 55 249 70 223 142 118 190 56 183 52 226 65
2021/20221.458 27 233 3 102 57 28 72 384 49 115 93 295
2022/20231.865 299 122 3 236 339 302 0 127 264 24 111 38
2023/2024625 60 75 28 15 55 140 27 80 11 12 12 110
2024/2025852 11 16 136 547 142 0 0 0 0 0 0 0
Totale 10.059