IRIS
Pietra, Francesco
 Distribuzione geografica
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Continente #
NA - Nord America 8.871
AS - Asia 2.427
EU - Europa 2.371
SA - Sud America 533
AF - Africa 41
OC - Oceania 12
Continente sconosciuto - Info sul continente non disponibili 2
Totale 14.257
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Nazione #
US - Stati Uniti d'America 8.795
SG - Singapore 1.435
CN - Cina 643
UA - Ucraina 580
BR - Brasile 451
RU - Federazione Russa 370
SE - Svezia 354
FI - Finlandia 253
LV - Lettonia 170
GB - Regno Unito 145
VN - Vietnam 133
BG - Bulgaria 125
DE - Germania 125
IT - Italia 116
FR - Francia 46
CA - Canada 42
IN - India 40
AR - Argentina 39
BD - Bangladesh 23
MX - Messico 23
JO - Giordania 22
IQ - Iraq 19
ES - Italia 16
JP - Giappone 16
PK - Pakistan 16
PL - Polonia 15
NL - Olanda 14
EC - Ecuador 13
TR - Turchia 12
ID - Indonesia 11
HK - Hong Kong 10
ZA - Sudafrica 10
IL - Israele 9
CL - Cile 8
AU - Australia 7
BY - Bielorussia 7
CO - Colombia 7
PE - Perù 6
MA - Marocco 5
PT - Portogallo 5
AE - Emirati Arabi Uniti 4
AZ - Azerbaigian 4
CI - Costa d'Avorio 4
EG - Egitto 4
HR - Croazia 4
NZ - Nuova Zelanda 4
UZ - Uzbekistan 4
VE - Venezuela 4
ZW - Zimbabwe 4
CH - Svizzera 3
DO - Repubblica Dominicana 3
DZ - Algeria 3
GR - Grecia 3
KE - Kenya 3
LT - Lituania 3
RO - Romania 3
SA - Arabia Saudita 3
SK - Slovacchia (Repubblica Slovacca) 3
TH - Thailandia 3
TN - Tunisia 3
TW - Taiwan 3
AO - Angola 2
BH - Bahrain 2
CR - Costa Rica 2
CZ - Repubblica Ceca 2
IE - Irlanda 2
KG - Kirghizistan 2
KR - Corea 2
NI - Nicaragua 2
NP - Nepal 2
OM - Oman 2
PH - Filippine 2
TT - Trinidad e Tobago 2
UY - Uruguay 2
AT - Austria 1
BE - Belgio 1
BN - Brunei Darussalam 1
BO - Bolivia 1
BW - Botswana 1
EE - Estonia 1
ET - Etiopia 1
EU - Europa 1
GA - Gabon 1
GY - Guiana 1
HN - Honduras 1
HU - Ungheria 1
IR - Iran 1
IS - Islanda 1
LB - Libano 1
MD - Moldavia 1
MK - Macedonia 1
PF - Polinesia Francese 1
PY - Paraguay 1
QA - Qatar 1
SV - El Salvador 1
SY - Repubblica araba siriana 1
XK - ???statistics.table.value.countryCode.XK??? 1
Totale 14.257
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Città #
Jacksonville 1.263
Singapore 926
Chandler 884
Fairfield 799
Ashburn 612
Woodbridge 406
Dallas 381
Wilmington 328
Seattle 327
Santa Clara 314
Columbus 312
Princeton 307
San Mateo 280
Houston 261
Cambridge 253
Ann Arbor 222
Moscow 204
Riga 170
New York 143
Beijing 132
Sofia 122
Dearborn 120
Boardman 117
Hefei 84
Los Angeles 77
Buffalo 71
Helsinki 64
Ho Chi Minh City 50
Munich 42
San Diego 42
São Paulo 40
London 33
Hanoi 32
Lawrence 32
Redondo Beach 30
Düsseldorf 26
Norwalk 26
Bremen 24
Guangzhou 20
Turku 20
Falls Church 19
Fremont 19
Milan 19
Chicago 18
Andover 17
Rio de Janeiro 17
Toronto 17
Nanjing 16
Chennai 15
Des Moines 14
Kunming 14
Shanghai 14
Verona 14
Brooklyn 13
Jinan 12
Tokyo 12
Belo Horizonte 11
San Paolo di Civitate 11
Warsaw 11
Denver 10
Hong Kong 10
Porto Alegre 10
Baghdad 9
Brasília 9
Campinas 9
Izmir 9
Johannesburg 9
Old Bridge 9
Buenos Aires 8
Changsha 8
Santo André 8
Shenyang 8
Stockholm 8
The Dalles 8
Boston 7
Costa Mesa 7
Madrid 7
Minsk 7
Montreal 7
Paris 7
Phoenix 7
Ribeirão Preto 7
San Francisco 7
Zhengzhou 7
Curitiba 6
Frankfurt am Main 6
Kilburn 6
Lahore 6
Orem 6
Osasco 6
Salt Lake City 6
Sorocaba 6
São José dos Campos 6
Altamura 5
Biên Hòa 5
Cuauhtémoc 5
Elk Grove Village 5
Guayaquil 5
Jakarta 5
Manchester 5
Totale 10.170
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Nome #
Arboxeniolide-1, a New, Naturally Occurring Xeniolide Diterpenoid from the Gorgonian Paragorgia arborea of the Crozet Is. (S. Indian Ocean) 155
(+)-Coralloidin-A and (-)-Coralloidin-B, Two New Sesquiterpenoids from the Mediterranean Alcyonacean Alcyonium coralloides 153
Hanishin, a semiracemic, bioactive C9 alkaloid of the axinellid sponge Acanthella carteri from the Hanish Islands. A shunt metabolite? 149
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 148
Agelastatin A, a New-Skeleton Cytotoxic Alkaloid of Oroidin Family. Isolation from the Axinellid Sponge Agelas dendromorpha of Coral Sea 148
A novel type of a second epoxy bridge in eunicellane diterpenes: isolation and 145
A Novel, Degraded Polyketidic Lactone, Leptosphaerolide, and Its Likely Diketone Precursor, Leptosphaerodione. Isolation from Cultures of the Marine Ascomycete Leptosphaeria oraemaris (LINDER) 144
(+)-Raspailyne-A, a novel, acid-sensitive acetylenic enol ether glyceride from the marine sponge Raspailia pumila 143
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) 137
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 136
A New, Unexpected Marine Source of a Molting Hormone. Isolation of Ecdysterone in Large Amounts from the Zoanthid Gerardia savaglia 135
Aztèquynol A, the first clearly defined, C-branched polyacetylene and the analogue Aztèquynol B. Isolation from the tropical marine sponge Petrosia sp 134
Almazole D, a new type of antibacterial 2,5-disubstituted oxazolic dipeptide from a red alga of the coast of Senegal 132
Novel 10-Hydroxydocosapolyenoic Acids from Deep-Water Scleractinian Corals 131
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 131
Glutathione S-transferase catalysed dehalogenation of haloaromatic compounds which lack nitro groups near the reaction centre 125
Some Peculiar Cases of 7-Telesubstitution by Anionic Phosphorus Nucleophiles on 2-Halotropones 124
Coralloidin C, D, and E: Novel Eudesmane Sesquiterpenoids from the Mediterranean Alcyonacean Alcyonium coralloides 122
A Butenolide Atypical of The Ranunculaceae: Aquilegiolide from Aquilegia atrata (Var. Atroviolacea) 121
Dictyotetraene, a New Diterpenoid from a Dictyota sp. (Chromophycota, Dictyotaceae) of the North Brittany Sea 120
Bretonin A and isobretonin A, unique glycerol derivatives isolated from a demosponge of Brittany waters 118
Twelve membered O-bridged, cyclic ethers of red seaweeds in the genus Laurencia exist in solution as slowly interconverting conformers 117
Antimicrobial Activities from Marine Fungi 116
Antipodal pathways to secondary metabolites in the same eukaryotic organism 115
On the absolute configuration of penlanfuran and related sesquiterpenoids of the sponge Dysidea fragilis from the North-Brittany sea 112
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 112
Coralloidolide F, the First Example of a 2,6-Cyclized Cembranolide: Isolation from the Mediterranean Alcyonacean Coral Alcyonium coralloides 109
Novel Cembranolides (Coralloidolide D and E) and a 3,7-Cyclized Cembranolide (Coralloidolide C) from the Mediterranean Coral Alcyonium coralloides 109
On the First Marine Natural Product Having Low Enantiomeric Purity 108
Glycerol Enol Ethers of the Brachiopod Gryphus vitreus from the Tuscan Archipelago 108
A synthesis of (S)-(+)-cryptone 107
New Functionalized Cycloheptatrienes via Tropone s-Adducts 107
Isolation of ergosta-4,24(28)-dien-9-one from both Astrophorida demosponges and subantarctic hexactinellides 106
Synthesis of the Alleged Natural Monoterpenoid a-Santolinenone 106
New Furano-Sesquiterpenoids from Mediterranean Sponges 105
Adriadysolide, the First Monoterpenoid Isolated from a Marine Sponge 104
2'-Deoxynucleoside Uronic Acids from the Ascidian Aplidium (=Amarocium) fuscum (Drasche, 1883) 104
Sphinxolide, a 26-membered antitumoral macrolide isolated from an unidentified Pacific nudibranch 103
Konakhin, a novel type of degraded sesterterpene. Isolation from a marine sponge of Senegal 102
Preliminary survey of toxicity of the green alga Caulerpa taxifolia introduced into the Mediterranean 101
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 101
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 101
On the absolute configuration of penlanfuran and related sesquiterpenoids of the sponge Dysidea fragilis from the North-Brittany sea 100
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 100
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 99
Rarisetenolide, epoxyrarisetenolide and epirarisetenolide, new skeleton sesquiterpene lactones as taxonomic markers and defensive agents of the marine ciliated morphospecies Euplotes rariseta 99
Leiopathic Acid, a Novel Optically Active Hydroxydocosapentaenoic Acid, and Related Compounds, from the Black Coral Leiopathes sp. of Saint Paul Island (S. Indian Ocean) 99
Configuration, conformation and reactivity of highly functionalized eunicellane diterpenes isolated from the gorgonians Eunicella cavolinii and Eunicella singularis from Marseille 98
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 98
Synthesis of the bretonins, polyolefinic esterified glyceryl ethers of an unidentified sponge from the north- Brittany sea:absolute configuration and novel structure assignment 97
Cavernicolin-1 and Cavernicolin-2, Two Epimeric Dibromolactams from The Mediterranean Sponge Aplysina (Verongia) cavernicola 97
Hydroxyicosatetraenoic, Hydroxyicosapentaenoic, Hydroxydocosapentaenoic, and Hydroxydocosahexaenoic Acids from the Sponge Echinochalina mollis of the Coral Sea 96
Oceanapins A-F, unique branched ceramides isolated from the Haplosclerid sponge Oceanapia cf. tenuis of the Coral Sea 96
Isolation, in large Amounts, of the Rare Plant Ecdysteroid Ajugasterone-C from the Mediterranean Zoanthid Gerardia savaglia 95
Gerardiasterone, a New Ecdysteroid with a 20,22,23,25-Tetrahydroxylated Side Chain from the Mediterranean Zoanthid Gerardia savaglia 95
Leucascandrolide A, a New Type of Macrolide: the First Powerfully Bioactive Metabolite of Calcareous Sponges (Leucascandra caveolata, a New Genus from the Coral Sea) 95
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 95
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 94
Selective INEPT Experiments on XL-Series Spectrometers 94
Stereochemical features of sesquiterpene metabolites as a distinctive trait of red seaweeds in the genus Laurencia 94
Aplysinopsin-type alkaloids from Dendrophyllia sp., a scleractinian coral of the family Dendrophylliidae of the Philippines. Facile photochemical Z/E photoisomerization and thermal reversal 93
Almazole A and almazole B, unusual marine alkaloids isolated from an unidentified red seaweed from the coasts of Senegal 93
Metabolites with a Novel C30 backbone from marine ciliates 93
Cytotoxins, Mycotoxins and Drugs from a New Deuteromycete, Acremonium neo-caledoniae, from the Southwestern Lagoon of New Caledonia 93
AlmazoleC, a new indole alkaloid bearing an unusually 2,5-disubstituted oxazole moiety, and its putative biogenetic peptidic precursor , from a Senegalese delesseriacean seaweed 91
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 90
Caratteristiche strutturali e possibili applicazioni di complessi delle euplotine con beta-ciclodestrine 89
Antibacterial and anticholinesterase activities of aplysamine-4, a bromotyrosine-derived metabolite of a Red Sea marine sponge 89
Pteridines, Sterols, and Indole Derivatives from the Lithistid Sponge Corallistes undulatus of the Coral Sea 88
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? 87
Rogiolol-acetate : a new halogenated chamigrane from the sponge Spongia zimocca. An interesting case of dynamic process investigated by NMR lineshape analysis 87
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 87
Analisi conformazionale di nuovi prodotti naturali marini mediante studio di NMR dinamico e calcoli di Meccanica Molecolare 87
Nuovi terpenoidi da ciliati marini del genere Euplotes : Chimica e Biologia a confronto 85
A Photochemical Route to 4-Alkytropones including Nezukone 84
New Types of Potentially Antimalarian Agents: Epidioxy-Substituted Norditerpene and Norsesterpenes from the Marine Sponge Diacarnus levii 84
Nuovi macrolidi da un nudibranco dell'Oceano Pacifico 82
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 81
Sintesi diastereoselettiva e biogeneticamente guidata della volvatellin 81
Novel aplysinopsin-type compounds from scleractinian corals of the family Dendrophyllidae of the Mediterraneanand the Philippines. Configurational-assignment criteria, stereospecific synthesis, and photoisomerization 80
Verecynamin A, a Novel Briarane Diterpenoid Isolated from Both the Mediterranean Nudibranch Mollusc Armina maculata and its Prey, the Pennatulacean Octocoral Veretillum cynomorium 79
Peculiarità strutturali e probabile biogenesi di nuovi diterpeni da una alga rossa Laurencia microcladia 79
On the Funicolides, Briaranes of the Pennatulacean Coral Funicolina quadrangularis from the Tuscan Archipelago: Conformational Preferences in this Class Diterpenes 79
Relative Contributions to Antitumoral Activity of Lipophilic vs. Polar Reactive Moieties in Marine Terpenoids 79
Quinolones from a bacterium and tyrosine metabolites from its host sponge, Suberea creba from the Coral Sea 79
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' 78
First finding of scytonemin in red algae: phylogenetic and ecological implications 78
Coralloidolide A and Coralloidolide B, the First Cembranoids from Mediterranean Organisms, the Alcyonacean Alcyonium coralloides 77
Conformational Studies, from temperature-dependent NMR specta, of marine polyalogenated chamigranes 77
Leucascandrolide B, a new 16-membered, extensively methyl branched polyhalogenated macrolide from the calcareous sponge Leucascandra caveolata from northeastern waters of New Caledonia 77
High Solvolytic Reactivity And Conformational Bias in New Obtusallenes,A Rare Family of C15 Macrocyclic Ethers 76
Sarcodictyenone, a Ring-Reduced, Optically Active Linear Tetraprenylquinone from the Mediterranean Stolonifer Sarcodictyon roseum (= Rolandia rosea) 76
Caulerpenyne-Amine Reacting System as a Model for in vivo Interactions of Ecotoxicologically Relevant Sesquiterpenoids of the Mediterranean-Adapted Tropical Green Seaweed Caulerpa taxifolia 76
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 75
New 1,2,3,4,-tetrahydropyrrolo[1,2-a]pyridinium alkaloids (phloeodictynes) from the New Caledonian shallow-water haplosclerid sponge Oceanapia fistolosa. Structural elucidation from LC-tandem-MS-soft-ionization techniques and discovery of antiplasmodial activity 75
Epinardins A-C, New Pyrroloiminoquinone Alkaloids of Undetermined Deep-Water Green Demosponges from Pre-Antarctic Indian Ocean 75
Conformational analysis of marine polyhalogenated beta-chamigranes through temperature-dependent NMR spectra 75
Sarcodictyn A and Sarcodictyn B, Novel Diterpenoidic Alcohols Esterified by (E)-N(1)-Methylurocanic Acid. Isolation from the Mediterranean Stolonifer Sarcodictyon roseum 74
Novel Naamidine-Type Alkaloids and Mixed-Ligand Zn++ Complexes of a Calcareous Sponge, Leucetta sp., from the Coral Sea 73
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 73
Totale 10.119
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Categoria #
all - tutte 60.975
article - articoli 0
book - libri 0
conference - conferenze 0
curatela - curatele 0
other - altro 0
patent - brevetti 558
selected - selezionate 0
volume - volumi 0
Totale 61.533
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Totale Lug Ago Sett Ott Nov Dic Gen Feb Mar Apr Mag Giu
2020/2021890 0 0 0 0 0 118 190 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
2024/20252.487 11 16 136 547 209 353 24 135 166 351 170 369
2025/20262.610 222 103 847 895 462 81 0 0 0 0 0 0
Totale 14.304